diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/BooleanValueRatherThanComparisonCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/BooleanValueRatherThanComparisonCleanUpCore.java
index dbbf7e48447..3fbd91a011b 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/BooleanValueRatherThanComparisonCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/BooleanValueRatherThanComparisonCleanUpCore.java
@@ -66,17 +66,19 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.BOOLEAN_VALUE_RATHER_THAN_COMPARISON)) {
-			return "" //$NON-NLS-1$
-					+ "boolean booleanValue = isValid;\n" //$NON-NLS-1$
-					+ "boolean booleanValue2 = !isValid;\n" //$NON-NLS-1$
-					+ "boolean booleanValue3 = i <= 0;\n" //$NON-NLS-1$
-					+ "boolean booleanValue4 = !booleanObject;\n"; //$NON-NLS-1$
+			return """
+				boolean booleanValue = isValid;
+				boolean booleanValue2 = !isValid;
+				boolean booleanValue3 = i <= 0;
+				boolean booleanValue4 = !booleanObject;
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "boolean booleanValue = isValid == true;\n" //$NON-NLS-1$
-				+ "boolean booleanValue2 = isValid == false;\n" //$NON-NLS-1$
-				+ "boolean booleanValue3 = Boolean.FALSE.equals(i > 0);\n" //$NON-NLS-1$
-				+ "boolean booleanValue4 = booleanObject.equals(Boolean.FALSE);\n"; //$NON-NLS-1$
+		return """
+			boolean booleanValue = isValid == true;
+			boolean booleanValue2 = isValid == false;
+			boolean booleanValue3 = Boolean.FALSE.equals(i > 0);
+			boolean booleanValue4 = booleanObject.equals(Boolean.FALSE);
+			"""; //$NON-NLS-1$
 	}
 }
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/ElseIfCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/ElseIfCleanUpCore.java
index 79891a52f42..e7be32ac634 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/ElseIfCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/ElseIfCleanUpCore.java
@@ -61,22 +61,26 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.ELSE_IF)) {
-			return "" //$NON-NLS-1$
-					+ "if (isValid) {\n" //$NON-NLS-1$
-					+ "  System.out.println(isValid);\n" //$NON-NLS-1$
-					+ "} else if (isEnabled) {\n" //$NON-NLS-1$
-					+ "  System.out.println(isEnabled);\n" //$NON-NLS-1$
-					+ "}\n\n\n"; //$NON-NLS-1$
+			return """
+				if (isValid) {
+				  System.out.println(isValid);
+				} else if (isEnabled) {
+				  System.out.println(isEnabled);
+				}
+				
+				
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "if (isValid) {\n" //$NON-NLS-1$
-				+ "  System.out.println(isValid);\n" //$NON-NLS-1$
-				+ "} else {\n" //$NON-NLS-1$
-				+ "  if (isEnabled) {\n" //$NON-NLS-1$
-				+ "    System.out.println(isEnabled);\n" //$NON-NLS-1$
-				+ "  }\n" //$NON-NLS-1$
-				+ "}\n"; //$NON-NLS-1$
+		return """
+			if (isValid) {
+			  System.out.println(isValid);
+			} else {
+			  if (isEnabled) {
+			    System.out.println(isEnabled);
+			  }
+			}
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/InvertEqualsCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/InvertEqualsCleanUpCore.java
index 6bc5095ea0d..ea8db267e44 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/InvertEqualsCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/InvertEqualsCleanUpCore.java
@@ -70,17 +70,19 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.INVERT_EQUALS)) {
-			return "" //$NON-NLS-1$
-					+ "boolean result = \"foo\".equals(text);\n" //$NON-NLS-1$
-					+ "boolean result2 = (text1 + text2).equals(text);\n" //$NON-NLS-1$
-					+ "boolean result3 = DayOfWeek.MONDAY.equals(object);\n" //$NON-NLS-1$
-					+ "boolean result4 = \"foo\".equalsIgnoreCase(text);\n"; //$NON-NLS-1$
+			return """
+				boolean result = "foo".equals(text);
+				boolean result2 = (text1 + text2).equals(text);
+				boolean result3 = DayOfWeek.MONDAY.equals(object);
+				boolean result4 = "foo".equalsIgnoreCase(text);
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "boolean result = text.equals(\"foo\");\n" //$NON-NLS-1$
-				+ "boolean result2 = text.equals(text1 + text2);\n" //$NON-NLS-1$
-				+ "boolean result3 = object.equals(DayOfWeek.MONDAY);\n" //$NON-NLS-1$
-				+ "boolean result4 = text.equalsIgnoreCase(\"foo\");\n"; //$NON-NLS-1$
+		return """
+			boolean result = text.equals("foo");
+			boolean result2 = text.equals(text1 + text2);
+			boolean result3 = object.equals(DayOfWeek.MONDAY);
+			boolean result4 = text.equalsIgnoreCase("foo");
+			"""; //$NON-NLS-1$
 	}
 }
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/NoStringCreationCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/NoStringCreationCleanUpCore.java
index 8a49f7df1ee..8de88450280 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/NoStringCreationCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/NoStringCreationCleanUpCore.java
@@ -82,16 +82,18 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.NO_STRING_CREATION)) {
-			return "" //$NON-NLS-1$
-					+ "String bar = \"foo\";\n" //$NON-NLS-1$
-					+ "String newBar = bar.concat(\"abc\");\n" //$NON-NLS-1$
-					+ "String cantChange = new String(possibleNullObject)\n"; //$NON-NLS-1$
+			return """
+				String bar = "foo";
+				String newBar = bar.concat("abc");
+				String cantChange = new String(possibleNullObject)
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "String bar = new String(\"foo\");\n" //$NON-NLS-1$
-				+ "String newBar = (new String(bar)).concat(\"abc\");\n" //$NON-NLS-1$
-				+ "String cantChange = new String(possibleNullObject)\n"; //$NON-NLS-1$
+		return """
+			String bar = new String("foo");
+			String newBar = (new String(bar)).concat("abc");
+			String cantChange = new String(possibleNullObject)
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PatternMatchingForInstanceofCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PatternMatchingForInstanceofCleanUpCore.java
index 292be750473..ccf1dac6b39 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PatternMatchingForInstanceofCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PatternMatchingForInstanceofCleanUpCore.java
@@ -73,16 +73,19 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.USE_PATTERN_MATCHING_FOR_INSTANCEOF)) {
-			return "" //$NON-NLS-1$
-					+ "if (object instanceof Integer i) {\n" //$NON-NLS-1$
-					+ "    return i.intValue();\n" //$NON-NLS-1$
-					+ "}\n\n"; //$NON-NLS-1$
+			return """
+				if (object instanceof Integer i) {
+				    return i.intValue();
+				}
+				
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "if (object instanceof Integer) {\n" //$NON-NLS-1$
-				+ "    Integer i = (Integer) object;\n" //$NON-NLS-1$
-				+ "    return i.intValue();\n" //$NON-NLS-1$
-				+ "}\n"; //$NON-NLS-1$
+		return """
+			if (object instanceof Integer) {
+			    Integer i = (Integer) object;
+			    return i.intValue();
+			}
+			"""; //$NON-NLS-1$
 	}
 }
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PlainReplacementCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PlainReplacementCleanUpCore.java
index 9e94c9dff49..ad21d299688 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PlainReplacementCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PlainReplacementCleanUpCore.java
@@ -70,17 +70,19 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.PLAIN_REPLACEMENT)) {
-			return "" //$NON-NLS-1$
-					+ "String result = text.replace(\"foo\", \"bar\");\n" //$NON-NLS-1$
-					+ "String result2 = text.replace(\"$0.02\", \"$0.50\");\n" //$NON-NLS-1$
-					+ "String result3 = text.replace('.', '/');\n" //$NON-NLS-1$
-					+ "String result4 = text.replace(placeholder, value);\n"; //$NON-NLS-1$
+			return """
+				String result = text.replace("foo", "bar");
+				String result2 = text.replace("$0.02", "$0.50");
+				String result3 = text.replace('.', '/');
+				String result4 = text.replace(placeholder, value);
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "String result = text.replaceAll(\"foo\", \"bar\");\n" //$NON-NLS-1$
-				+ "String result2 = text.replaceAll(\"\\\\$0\\\\.02\", \"\\\\$0.50\");\n" //$NON-NLS-1$
-				+ "String result3 = text.replaceAll(\"\\\\.\", \"/\");\n" //$NON-NLS-1$
-				+ "String result4 = text.replaceAll(Pattern.quote(placeholder), Matcher.quoteReplacement(value));\n"; //$NON-NLS-1$
+		return """
+			String result = text.replaceAll("foo", "bar");
+			String result2 = text.replaceAll("\\\\$0\\\\.02", "\\\\$0.50");
+			String result3 = text.replaceAll("\\\\.", "/");
+			String result4 = text.replaceAll(Pattern.quote(placeholder), Matcher.quoteReplacement(value));
+			"""; //$NON-NLS-1$
 	}
 }
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PullOutIfFromIfElseCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PullOutIfFromIfElseCleanUpCore.java
index a1748961a5f..8d2a533f9e4 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PullOutIfFromIfElseCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/PullOutIfFromIfElseCleanUpCore.java
@@ -66,25 +66,29 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.PULL_OUT_IF_FROM_IF_ELSE)) {
-			return "" //$NON-NLS-1$
-					+ "if (isActive) {\n" //$NON-NLS-1$
-					+ "    if (isFound) {\n" //$NON-NLS-1$
-					+ "        System.out.println(\"foo\");\n" //$NON-NLS-1$
-					+ "    } else {\n" //$NON-NLS-1$
-					+ "        System.out.println(\"bar\");\n" //$NON-NLS-1$
-					+ "    }\n" //$NON-NLS-1$
-					+ "}\n\n\n"; //$NON-NLS-1$
+			return """
+				if (isActive) {
+				    if (isFound) {
+				        System.out.println("foo");
+				    } else {
+				        System.out.println("bar");
+				    }
+				}
+				
+				
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "if (isFound) {\n" //$NON-NLS-1$
-				+ "    if (isActive) {\n" //$NON-NLS-1$
-				+ "        System.out.println(\"foo\");\n" //$NON-NLS-1$
-				+ "    }\n" //$NON-NLS-1$
-				+ "} else {\n" //$NON-NLS-1$
-				+ "    if (isActive) {\n" //$NON-NLS-1$
-				+ "        System.out.println(\"bar\");\n" //$NON-NLS-1$
-				+ "    }\n" //$NON-NLS-1$
-				+ "}\n"; //$NON-NLS-1$
+		return """
+			if (isFound) {
+			    if (isActive) {
+			        System.out.println("foo");
+			    }
+			} else {
+			    if (isActive) {
+			        System.out.println("bar");
+			    }
+			}
+			"""; //$NON-NLS-1$
 	}
 }
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/RedundantComparatorCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/RedundantComparatorCleanUpCore.java
index 6f96b4e162f..e56fe109e79 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/RedundantComparatorCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/RedundantComparatorCleanUpCore.java
@@ -73,12 +73,13 @@ public String getPreview() {
 			return "Collections.sort(listToSort);\n\n\n\n\n\n"; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "Collections.sort(listToSort, new Comparator<Date>() {\n" //$NON-NLS-1$
-				+ "    @Override\n" //$NON-NLS-1$
-				+ "    public int compare(Date o1, Date o2) {\n" //$NON-NLS-1$
-				+ "        return o1.compareTo(o2);\n" //$NON-NLS-1$
-				+ "    }\n" //$NON-NLS-1$
-				+ "});\n"; //$NON-NLS-1$
+		return """
+			Collections.sort(listToSort, new Comparator<Date>() {
+			    @Override
+			    public int compare(Date o1, Date o2) {
+			        return o1.compareTo(o2);
+			    }
+			});
+			"""; //$NON-NLS-1$
 	}
 }
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/SwitchCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/SwitchCleanUpCore.java
index 15ea46385db..2afd22c7031 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/SwitchCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/SwitchCleanUpCore.java
@@ -76,32 +76,39 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.USE_SWITCH)) {
-			return "" //$NON-NLS-1$
-					+ "switch (number) {\n" //$NON-NLS-1$
-					+ "case 0:\n" //$NON-NLS-1$
-					+ "  i = 0;\n" //$NON-NLS-1$
-					+ "  break;\n" //$NON-NLS-1$
-					+ "case 1:\n" //$NON-NLS-1$
-					+ "  j = 10;\n" //$NON-NLS-1$
-					+ "  break;\n" //$NON-NLS-1$
-					+ "case 2:\n" //$NON-NLS-1$
-					+ "  k = 20;\n" //$NON-NLS-1$
-					+ "  break;\n" //$NON-NLS-1$
-					+ "default:\n" //$NON-NLS-1$
-					+ "  m = -1;\n" //$NON-NLS-1$
-					+ "  break;\n" //$NON-NLS-1$
-					+ "}\n"; //$NON-NLS-1$
+			return """
+				switch (number) {
+				case 0:
+				  i = 0;
+				  break;
+				case 1:
+				  j = 10;
+				  break;
+				case 2:
+				  k = 20;
+				  break;
+				default:
+				  m = -1;
+				  break;
+				}
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "if (number == 0) {\n" //$NON-NLS-1$
-				+ "    i = 0;\n" //$NON-NLS-1$
-				+ "} else if (number == 1) {\n" //$NON-NLS-1$
-				+ "    j = 10;\n" //$NON-NLS-1$
-				+ "} else if (2 == number) {\n" //$NON-NLS-1$
-				+ "    k = 20;\n" //$NON-NLS-1$
-				+ "} else {\n" //$NON-NLS-1$
-				+ "    m = -1;\n" //$NON-NLS-1$
-				+ "}\n\n\n\n\n\n"; //$NON-NLS-1$
+		return """
+			if (number == 0) {
+			    i = 0;
+			} else if (number == 1) {
+			    j = 10;
+			} else if (2 == number) {
+			    k = 20;
+			} else {
+			    m = -1;
+			}
+			
+			
+			
+			
+			
+			"""; //$NON-NLS-1$
 	}
 }
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/SwitchExpressionsCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/SwitchExpressionsCleanUpCore.java
index ef2473921c2..dd87c44c504 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/SwitchExpressionsCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/SwitchExpressionsCleanUpCore.java
@@ -71,27 +71,37 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.CONTROL_STATEMENTS_CONVERT_TO_SWITCH_EXPRESSIONS)) {
-			return "" //$NON-NLS-1$
-					+ "int i = switch(j) {\n" //$NON-NLS-1$
-					+ "    case 1 -> 3;\n" //$NON-NLS-1$
-					+ "    case 2 -> 4;\n" //$NON-NLS-1$
-					+ "    default -> 0;\n" //$NON-NLS-1$
-					+ "};\n\n\n\n\n\n\n\n\n"; //$NON-NLS-1$
+			return """
+				int i = switch(j) {
+				    case 1 -> 3;
+				    case 2 -> 4;
+				    default -> 0;
+				};
+				
+				
+				
+				
+				
+				
+				
+				
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "int i;\n" //$NON-NLS-1$
-				+ "switch(j) {\n" //$NON-NLS-1$
-				+ "    case 1:\n" //$NON-NLS-1$
-				+ "        i = 3;\n" //$NON-NLS-1$
-				+ "        break;\n" //$NON-NLS-1$
-				+ "    case 2:\n" //$NON-NLS-1$
-				+ "        i = 4;\n" //$NON-NLS-1$
-				+ "        break;\n" //$NON-NLS-1$
-				+ "    default:\n" //$NON-NLS-1$
-				+ "        i = 0;\n" //$NON-NLS-1$
-				+ "        break;\n" //$NON-NLS-1$
-				+ "}\n" //$NON-NLS-1$
-				+ "\n"; //$NON-NLS-1$
+		return """
+			int i;
+			switch(j) {
+			    case 1:
+			        i = 3;
+			        break;
+			    case 2:
+			        i = 4;
+			        break;
+			    default:
+			        i = 0;
+			        break;
+			}
+			
+			"""; //$NON-NLS-1$
 	}
 }
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/UnusedCodeCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/UnusedCodeCleanUpCore.java
index a896171951f..1c3beb04f89 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/UnusedCodeCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/UnusedCodeCleanUpCore.java
@@ -170,23 +170,27 @@ public String getPreview() {
 
 
 		if (isEnabled(CleanUpConstants.REMOVE_UNUSED_CODE_METHOD_PARAMETERS)) {
-			String code= "    public void zoz() {\n" //$NON-NLS-1$
-					+ "        zozo();\n" //$NON-NLS-1$
-					+ "    }\n" //$NON-NLS-1$
-					+ "\n" //$NON-NLS-1$
-					+ "    private void zozo() {\n" //$NON-NLS-1$
-					+ "        System.out.println(\"\");\n" //$NON-NLS-1$
-					+ "    };\n"; //$NON-NLS-1$
+			String code= """
+				    public void zoz() {
+				        zozo();
+				    }
+				
+				    private void zozo() {
+				        System.out.println("");
+				    };
+				"""; //$NON-NLS-1$
 
 			buf.append(code);
 		} else {
-			String code= "    public void zoz() {\n" //$NON-NLS-1$
-					+ "        zozo(34);\n" //$NON-NLS-1$
-					+ "    }\n" //$NON-NLS-1$
-					+ "\n" //$NON-NLS-1$
-					+ "    private void zozo(int k) {\n" //$NON-NLS-1$
-					+ "        System.out.println(\"\");\n" //$NON-NLS-1$
-					+ "    };\n"; //$NON-NLS-1$
+			String code= """
+				    public void zoz() {
+				        zozo(34);
+				    }
+				
+				    private void zozo(int k) {
+				        System.out.println("");
+				    };
+				"""; //$NON-NLS-1$
 			buf.append(code);
 		}
 
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/ValueOfRatherThanInstantiationCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/ValueOfRatherThanInstantiationCleanUpCore.java
index f6406648789..791a17bf605 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/ValueOfRatherThanInstantiationCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/ValueOfRatherThanInstantiationCleanUpCore.java
@@ -70,15 +70,17 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.VALUEOF_RATHER_THAN_INSTANTIATION)) {
-			return "" //$NON-NLS-1$
-					+ "Object characterObject = Character.valueOf('a');\n" //$NON-NLS-1$
-					+ "Byte.valueOf(\"0\").byteValue();\n" //$NON-NLS-1$
-					+ "long l = 42;\n"; //$NON-NLS-1$
+			return """
+				Object characterObject = Character.valueOf('a');
+				Byte.valueOf("0").byteValue();
+				long l = 42;
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-					+ "Object characterObject = Character.valueOf('a');\n" //$NON-NLS-1$
-					+ "new Byte(\"0\").byteValue();\n" //$NON-NLS-1$
-					+ "long l = new Long(42);\n"; //$NON-NLS-1$
+		return """
+			Object characterObject = Character.valueOf('a');
+			new Byte("0").byteValue();
+			long l = new Long(42);
+			"""; //$NON-NLS-1$
 	}
 }
diff --git a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/VarCleanUpCore.java b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/VarCleanUpCore.java
index 6a678edf81c..7594aebad99 100644
--- a/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/VarCleanUpCore.java
+++ b/org.eclipse.jdt.core.manipulation/common/org/eclipse/jdt/internal/ui/fix/VarCleanUpCore.java
@@ -100,16 +100,18 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.USE_VAR)) {
-			return "" //$NON-NLS-1$
-					+ "var number = 0;\n" //$NON-NLS-1$
-					+ "var list = new ArrayList<String>();\n" //$NON-NLS-1$
-					+ "var map = new HashMap<Integer, String>();\n"; //$NON-NLS-1$
+			return """
+				var number = 0;
+				var list = new ArrayList<String>();
+				var map = new HashMap<Integer, String>();
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "int number = 0;\n" //$NON-NLS-1$
-				+ "ArrayList<String> list = new ArrayList<String>();\n" //$NON-NLS-1$
-				+ "HashMap<Integer, String> map = new HashMap<>();\n"; //$NON-NLS-1$
+		return """
+			int number = 0;
+			ArrayList<String> list = new ArrayList<String>();
+			HashMap<Integer, String> map = new HashMap<>();
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/AddAllCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/AddAllCleanUp.java
index b99d8745ccc..b73dd85b5ea 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/AddAllCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/AddAllCleanUp.java
@@ -99,10 +99,11 @@ public String getPreview() {
 			return "outputList.addAll(inputList);\n\n\n"; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "for (int i = 0; i < inputList.size(); i++) {\n" //$NON-NLS-1$
-				+ "    outputList.add(inputList.get(i));\n" //$NON-NLS-1$
-				+ "}\n"; //$NON-NLS-1$
+		return """
+			for (int i = 0; i < inputList.size(); i++) {
+			    outputList.add(inputList.get(i));
+			}
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ArraysFillCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ArraysFillCleanUp.java
index bab84287242..946e2c080c5 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ArraysFillCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ArraysFillCleanUp.java
@@ -94,10 +94,11 @@ public String getPreview() {
 			return "Arrays.fill(array, true);\n\n\n"; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "for (int i = 0; i < array.length; i++) {\n" //$NON-NLS-1$
-				+ "  array[i] = true;\n" //$NON-NLS-1$
-				+ "}\n"; //$NON-NLS-1$
+		return """
+			for (int i = 0; i < array.length; i++) {
+			  array[i] = true;
+			}
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/AutoboxingCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/AutoboxingCleanUp.java
index 57809570068..76146c03dac 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/AutoboxingCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/AutoboxingCleanUp.java
@@ -87,14 +87,16 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.USE_AUTOBOXING)) {
-			return "" //$NON-NLS-1$
-					+ "Integer i = 0;\n" //$NON-NLS-1$
-					+ "Character c = '*';\n"; //$NON-NLS-1$
+			return """
+				Integer i = 0;
+				Character c = '*';
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "Integer i = Integer.valueOf(0);\n" //$NON-NLS-1$
-				+ "Character c = Character.valueOf('*');\n"; //$NON-NLS-1$
+		return """
+			Integer i = Integer.valueOf(0);
+			Character c = Character.valueOf('*');
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/CollectionCloningCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/CollectionCloningCleanUp.java
index 3c50efe6f5e..d5b71f238fb 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/CollectionCloningCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/CollectionCloningCleanUp.java
@@ -100,9 +100,10 @@ public String getPreview() {
 			return "List<Integer> output = new ArrayList<>(collection);\n\n"; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "List<Integer> output = new ArrayList<>();\n" //$NON-NLS-1$
-				+ "output.addAll(collection);\n"; //$NON-NLS-1$
+		return """
+			List<Integer> output = new ArrayList<>();
+			output.addAll(collection);
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ComparingOnCriteriaCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ComparingOnCriteriaCleanUp.java
index e03e227d931..556b3cb4732 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ComparingOnCriteriaCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ComparingOnCriteriaCleanUp.java
@@ -140,22 +140,23 @@ public String getPreview() {
 			return "Comparator<Date> comparator = Comparator.nullsFirst(Comparator.comparing(Date::toString));\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n"; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "Comparator<Date> comparator = new Comparator<Date>() {\n" //$NON-NLS-1$
-				+ "    @Override\n" //$NON-NLS-1$
-				+ "    public int compare(Date o1, Date o2) {\n" //$NON-NLS-1$
-				+ "        if (o2 != null) {\n" //$NON-NLS-1$
-				+ "            if (o1 != null) {\n" //$NON-NLS-1$
-				+ "                return o1.toString().compareTo(o2.toString());\n" //$NON-NLS-1$
-				+ "            }\n" //$NON-NLS-1$
-				+ "            return -1;\n" //$NON-NLS-1$
-				+ "        } else if (o1 != null) {\n" //$NON-NLS-1$
-				+ "            return 1;\n" //$NON-NLS-1$
-				+ "        } else {\n" //$NON-NLS-1$
-				+ "            return 0;\n" //$NON-NLS-1$
-				+ "        }\n" //$NON-NLS-1$
-				+ "    }\n" //$NON-NLS-1$
-				+ "};\n"; //$NON-NLS-1$
+		return """
+			Comparator<Date> comparator = new Comparator<Date>() {
+			    @Override
+			    public int compare(Date o1, Date o2) {
+			        if (o2 != null) {
+			            if (o1 != null) {
+			                return o1.toString().compareTo(o2.toString());
+			            }
+			            return -1;
+			        } else if (o1 != null) {
+			            return 1;
+			        } else {
+			            return 0;
+			        }
+			    }
+			};
+			"""; //$NON-NLS-1$
 	}
 
 	private static boolean equalNotNull(final Object obj1, final Object obj2) {
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ControlFlowMergeCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ControlFlowMergeCleanUp.java
index 3e28ce5b888..ddeaa6f00f9 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ControlFlowMergeCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ControlFlowMergeCleanUp.java
@@ -89,20 +89,24 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.CONTROLFLOW_MERGE)) {
-			return "" //$NON-NLS-1$
-					+ "if (!isValid) {\n" //$NON-NLS-1$
-					+ "    j++;\n" //$NON-NLS-1$
-					+ "}\n" //$NON-NLS-1$
-					+ "++i;\n\n\n"; //$NON-NLS-1$
+			return """
+				if (!isValid) {
+				    j++;
+				}
+				++i;
+				
+				
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "if (isValid) {\n" //$NON-NLS-1$
-				+ "    ++i;\n" //$NON-NLS-1$
-				+ "} else {\n" //$NON-NLS-1$
-				+ "    j++;\n" //$NON-NLS-1$
-				+ "    i = i + 1;\n" //$NON-NLS-1$
-				+ "}\n"; //$NON-NLS-1$
+		return """
+			if (isValid) {
+			    ++i;
+			} else {
+			    j++;
+			    i = i + 1;
+			}
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/DoubleNegationCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/DoubleNegationCleanUp.java
index 26ed841b59b..62e3c9aee8d 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/DoubleNegationCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/DoubleNegationCleanUp.java
@@ -78,16 +78,18 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.DOUBLE_NEGATION)) {
-			return "" //$NON-NLS-1$
-					+ "boolean b1 = isValid == isEnabled;\n" //$NON-NLS-1$
-					+ "boolean b2 = isValid ^ isEnabled;\n" //$NON-NLS-1$
-					+ "boolean b3 = isValid == isEnabled;\n"; //$NON-NLS-1$
+			return """
+				boolean b1 = isValid == isEnabled;
+				boolean b2 = isValid ^ isEnabled;
+				boolean b3 = isValid == isEnabled;
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "boolean b1 = !isValid == !isEnabled;\n" //$NON-NLS-1$
-				+ "boolean b2 = !isValid != !isEnabled;\n" //$NON-NLS-1$
-				+ "boolean b3 = !isValid ^ isEnabled;\n"; //$NON-NLS-1$
+		return """
+			boolean b1 = !isValid == !isEnabled;
+			boolean b2 = !isValid != !isEnabled;
+			boolean b3 = !isValid ^ isEnabled;
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/EmbeddedIfCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/EmbeddedIfCleanUp.java
index 8d2811b9050..d0f696dabfe 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/EmbeddedIfCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/EmbeddedIfCleanUp.java
@@ -75,18 +75,22 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.RAISE_EMBEDDED_IF)) {
-			return "" //$NON-NLS-1$
-					+ "if (isActive && isValid) {\n" //$NON-NLS-1$
-					+ "  int i = 0;\n" //$NON-NLS-1$
-					+ "}\n\n\n"; //$NON-NLS-1$
+			return """
+				if (isActive && isValid) {
+				  int i = 0;
+				}
+				
+				
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "if (isActive) {\n" //$NON-NLS-1$
-				+ "  if (isValid) {\n" //$NON-NLS-1$
-				+ "    int i = 0;\n" //$NON-NLS-1$
-				+ "  }\n" //$NON-NLS-1$
-				+ "}\n"; //$NON-NLS-1$
+		return """
+			if (isActive) {
+			  if (isValid) {
+			    int i = 0;
+			  }
+			}
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/EvaluateNullableCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/EvaluateNullableCleanUp.java
index c0cbf5e89ce..9f5ad0bf03d 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/EvaluateNullableCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/EvaluateNullableCleanUp.java
@@ -80,16 +80,18 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.EVALUATE_NULLABLE)) {
-			return "" //$NON-NLS-1$
-					+ "boolean b1 = \"\".equals(s);\n" //$NON-NLS-1$
-					+ "boolean b2 = \"\".equalsIgnoreCase(s);\n" //$NON-NLS-1$
-					+ "boolean b3 = s instanceof String;\n"; //$NON-NLS-1$
+			return """
+				boolean b1 = "".equals(s);
+				boolean b2 = "".equalsIgnoreCase(s);
+				boolean b3 = s instanceof String;
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "boolean b1 = s != null && \"\".equals(s);\n" //$NON-NLS-1$
-				+ "boolean b2 = null != s && \"\".equalsIgnoreCase(s);\n" //$NON-NLS-1$
-				+ "boolean b3 = s != null && s instanceof String;\n"; //$NON-NLS-1$
+		return """
+			boolean b1 = s != null && "".equals(s);
+			boolean b2 = null != s && "".equalsIgnoreCase(s);
+			boolean b3 = s != null && s instanceof String;
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ExtractIncrementCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ExtractIncrementCleanUp.java
index a66311f5318..c7e7bac404e 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ExtractIncrementCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ExtractIncrementCleanUp.java
@@ -93,9 +93,10 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.EXTRACT_INCREMENT)) {
-			return "" //$NON-NLS-1$
-					+ "i++;\n" //$NON-NLS-1$
-					+ "boolean isPositive = i > 0;\n"; //$NON-NLS-1$
+			return """
+				i++;
+				boolean isPositive = i > 0;
+				"""; //$NON-NLS-1$
 		}
 
 		return "boolean isPositive = ++i > 0;\n\n"; //$NON-NLS-1$
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/HashCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/HashCleanUp.java
index ae957c4733e..b2e84e27920 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/HashCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/HashCleanUp.java
@@ -118,11 +118,12 @@ public String getPreview() {
 				+ "return Objects.hash(aShort);\n\n\n\n"; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-			+ "final int prime = 31;\n" //$NON-NLS-1$
-			+ "int result = 1;\n" //$NON-NLS-1$
-			+ "result = prime * result + aShort;\n" //$NON-NLS-1$
-			+ "return result;\n"; //$NON-NLS-1$
+		return """
+			final int prime = 31;
+			int result = 1;
+			result = prime * result + aShort;
+			return result;
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/JoinCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/JoinCleanUp.java
index 976095cbefa..4413169e156 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/JoinCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/JoinCleanUp.java
@@ -108,23 +108,34 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.JOIN)) {
-			return "" //$NON-NLS-1$
-					+ "String concatenation= String.join(\", \", texts);\n" //$NON-NLS-1$
-					+ "return concatenation;\n\n\n\n\n\n\n\n\n\n"; //$NON-NLS-1$
+			return """
+				String concatenation= String.join(", ", texts);
+				return concatenation;
+				
+				
+				
+				
+				
+				
+				
+				
+				
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "boolean isFirst = true;\n" //$NON-NLS-1$
-				+ "StringBuilder concatenation = new StringBuilder();\n" //$NON-NLS-1$
-				+ "for (String text : texts) {\n" //$NON-NLS-1$
-				+ "  if (isFirst) {\n" //$NON-NLS-1$
-				+ "    isFirst = false;\n" //$NON-NLS-1$
-				+ "  } else {\n" //$NON-NLS-1$
-				+ "    concatenation.append(\", \");\n" //$NON-NLS-1$
-				+ "  }\n" //$NON-NLS-1$
-				+ "  concatenation.append(text);\n" //$NON-NLS-1$
-				+ "}\n" //$NON-NLS-1$
-				+ "return concatenation.toString();\n"; //$NON-NLS-1$
+		return """
+			boolean isFirst = true;
+			StringBuilder concatenation = new StringBuilder();
+			for (String text : texts) {
+			  if (isFirst) {
+			    isFirst = false;
+			  } else {
+			    concatenation.append(", ");
+			  }
+			  concatenation.append(text);
+			}
+			return concatenation.toString();
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/LambdaExpressionAndMethodRefCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/LambdaExpressionAndMethodRefCleanUp.java
index 64dd210ccce..158086cb827 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/LambdaExpressionAndMethodRefCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/LambdaExpressionAndMethodRefCleanUp.java
@@ -65,20 +65,22 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.SIMPLIFY_LAMBDA_EXPRESSION_AND_METHOD_REF)) {
-			return "" //$NON-NLS-1$
-					+ "someString -> someString.trim().toLowerCase();\n" //$NON-NLS-1$
-					+ "someString -> someString.trim().toLowerCase();\n" //$NON-NLS-1$
-					+ "someString -> (someString.trim().toLowerCase() + \"bar\");\n" //$NON-NLS-1$
-					+ "ArrayList::new;\n" //$NON-NLS-1$
-					+ "Date::getTime;\n"; //$NON-NLS-1$
+			return """
+				someString -> someString.trim().toLowerCase();
+				someString -> someString.trim().toLowerCase();
+				someString -> (someString.trim().toLowerCase() + "bar");
+				ArrayList::new;
+				Date::getTime;
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "(someString) -> someString.trim().toLowerCase();\n" //$NON-NLS-1$
-				+ "someString -> {return someString.trim().toLowerCase();};\n" //$NON-NLS-1$
-				+ "someString -> {return someString.trim().toLowerCase() + \"bar\";};\n" //$NON-NLS-1$
-				+ "() -> new ArrayList<>();\n" //$NON-NLS-1$
-				+ "date -> date.getTime();\n"; //$NON-NLS-1$
+		return """
+			(someString) -> someString.trim().toLowerCase();
+			someString -> {return someString.trim().toLowerCase();};
+			someString -> {return someString.trim().toLowerCase() + "bar";};
+			() -> new ArrayList<>();
+			date -> date.getTime();
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/MergeConditionalBlocksCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/MergeConditionalBlocksCleanUp.java
index 85aa349c3d4..f9b190c6363 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/MergeConditionalBlocksCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/MergeConditionalBlocksCleanUp.java
@@ -76,22 +76,26 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.MERGE_CONDITIONAL_BLOCKS)) {
-			return "" //$NON-NLS-1$
-					+ "if (isValid || (i != 1)) {\n" //$NON-NLS-1$
-					+ "    System.out.println(\"Duplicate\");\n" //$NON-NLS-1$
-					+ "} else {\n" //$NON-NLS-1$
-					+ "    System.out.println(\"Different\");\n" //$NON-NLS-1$
-					+ "}\n\n\n"; //$NON-NLS-1$
+			return """
+				if (isValid || (i != 1)) {
+				    System.out.println("Duplicate");
+				} else {
+				    System.out.println("Different");
+				}
+				
+				
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "if (isValid) {\n" //$NON-NLS-1$
-				+ "    System.out.println(\"Duplicate\");\n" //$NON-NLS-1$
-				+ "} else if (i == 1) {\n" //$NON-NLS-1$
-				+ "    System.out.println(\"Different\");\n" //$NON-NLS-1$
-				+ "} else {\n" //$NON-NLS-1$
-				+ "    System.out.println(\"Duplicate\");\n" //$NON-NLS-1$
-				+ "}\n"; //$NON-NLS-1$
+		return """
+			if (isValid) {
+			    System.out.println("Duplicate");
+			} else if (i == 1) {
+			    System.out.println("Different");
+			} else {
+			    System.out.println("Duplicate");
+			}
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ObjectsEqualsCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ObjectsEqualsCleanUp.java
index 714248afd8f..e85c6640a69 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ObjectsEqualsCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/ObjectsEqualsCleanUp.java
@@ -89,20 +89,26 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.USE_OBJECTS_EQUALS)) {
-			return "" //$NON-NLS-1$
-					+ "if (!Objects.equals(aText, other.aText)) {\n" //$NON-NLS-1$
-					+ "	return false;\n" //$NON-NLS-1$
-					+ "}\n\n\n\n\n"; //$NON-NLS-1$
+			return """
+				if (!Objects.equals(aText, other.aText)) {
+					return false;
+				}
+				
+				
+				
+				
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "if (aText == null) {\n" //$NON-NLS-1$
-				+ "  if (other.aText != null) {\n" //$NON-NLS-1$
-				+ "    return false;\n" //$NON-NLS-1$
-				+ "  }\n" //$NON-NLS-1$
-				+ "} else if (!aText.equals(other.aText)) {\n" //$NON-NLS-1$
-				+ "	return false;\n" //$NON-NLS-1$
-				+ "}\n"; //$NON-NLS-1$
+		return """
+			if (aText == null) {
+			  if (other.aText != null) {
+			    return false;
+			  }
+			} else if (!aText.equals(other.aText)) {
+				return false;
+			}
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PatternCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PatternCleanUp.java
index 2cc227f1c79..2a557defdce 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PatternCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PatternCleanUp.java
@@ -113,20 +113,22 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.PRECOMPILE_REGEX)) {
-			return "" //$NON-NLS-1$
-					+ "Pattern dateCheck= Pattern.compile(\"\\\\d{4}-\\\\d{2}-\\\\d{2}\");\n" //$NON-NLS-1$
-					+ "dateCheck.matcher(\"2020-03-17\").matches();\n" //$NON-NLS-1$
-					+ "dateCheck.matcher(\"2020-03-17\").dateCheckplaceFirst(\"0000-00-00\");\n" //$NON-NLS-1$
-					+ "dateCheck.matcher(\"2020-03-17\").replaceAll(\"0000-00-00\");\n" //$NON-NLS-1$
-					+ "dateCheck.split(\"A2020-03-17B\");\n"; //$NON-NLS-1$
+			return """
+				Pattern dateCheck= Pattern.compile("\\\\d{4}-\\\\d{2}-\\\\d{2}");
+				dateCheck.matcher("2020-03-17").matches();
+				dateCheck.matcher("2020-03-17").dateCheckplaceFirst("0000-00-00");
+				dateCheck.matcher("2020-03-17").replaceAll("0000-00-00");
+				dateCheck.split("A2020-03-17B");
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "String dateCheck= \"\\\\d{4}-\\\\d{2}-\\\\d{2}\";\n" //$NON-NLS-1$
-				+ "\"2020-03-17\".matches(dateCheck);\n" //$NON-NLS-1$
-				+ "\"2020-03-17\".replaceFirst(dateCheck, \"0000-00-00\");\n" //$NON-NLS-1$
-				+ "\"2020-03-17\".replaceAll(dateCheck, \"0000-00-00\");\n" //$NON-NLS-1$
-				+ "\"A2020-03-17B\".split(dateCheck);\n"; //$NON-NLS-1$
+		return """
+			String dateCheck= "\\\\d{4}-\\\\d{2}-\\\\d{2}";
+			"2020-03-17".matches(dateCheck);
+			"2020-03-17".replaceFirst(dateCheck, "0000-00-00");
+			"2020-03-17".replaceAll(dateCheck, "0000-00-00");
+			"A2020-03-17B".split(dateCheck);
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PrimitiveParsingCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PrimitiveParsingCleanUp.java
index 9ddc2873dc3..4ff69c1c389 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PrimitiveParsingCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PrimitiveParsingCleanUp.java
@@ -82,14 +82,16 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.PRIMITIVE_PARSING)) {
-			return "" //$NON-NLS-1$
-					+ "int number = Integer.parseInt(\"42\", 8);\n" //$NON-NLS-1$
-					+ "Double.parseDouble(\"42.42\");\n"; //$NON-NLS-1$
+			return """
+				int number = Integer.parseInt("42", 8);
+				Double.parseDouble("42.42");
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "int number = Integer.valueOf(\"42\", 8);\n" //$NON-NLS-1$
-				+ "new Double(\"42.42\").doubleValue();\n"; //$NON-NLS-1$
+		return """
+			int number = Integer.valueOf("42", 8);
+			new Double("42.42").doubleValue();
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PrimitiveSerializationCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PrimitiveSerializationCleanUp.java
index 29b62d8f085..2d686a4e191 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PrimitiveSerializationCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PrimitiveSerializationCleanUp.java
@@ -83,14 +83,16 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.PRIMITIVE_SERIALIZATION)) {
-			return "" //$NON-NLS-1$
-					+ "String text1 = Integer.toString(number);\n" //$NON-NLS-1$
-					+ "String text2 = Character.toString(letter);\n"; //$NON-NLS-1$
+			return """
+				String text1 = Integer.toString(number);
+				String text2 = Character.toString(letter);
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "String text1 = Integer.valueOf(number).toString();\n" //$NON-NLS-1$
-				+ "String text2 = Character.valueOf(letter).toString();\n"; //$NON-NLS-1$
+		return """
+			String text1 = Integer.valueOf(number).toString();
+			String text2 = Character.valueOf(letter).toString();
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PullUpAssignmentCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PullUpAssignmentCleanUp.java
index 49430e59113..3028ffe264a 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PullUpAssignmentCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/PullUpAssignmentCleanUp.java
@@ -93,9 +93,10 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.PULL_UP_ASSIGNMENT)) {
-			return "" //$NON-NLS-1$
-					+ "isRemoved = list.remove(o);\n" //$NON-NLS-1$
-					+ "if (isRemoved) {}\n"; //$NON-NLS-1$
+			return """
+				isRemoved = list.remove(o);
+				if (isRemoved) {}
+				"""; //$NON-NLS-1$
 		}
 
 		return "" //$NON-NLS-1$
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/RedundantComparisonStatementCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/RedundantComparisonStatementCleanUp.java
index fd8453de3ff..05df780c258 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/RedundantComparisonStatementCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/RedundantComparisonStatementCleanUp.java
@@ -87,12 +87,13 @@ public String getPreview() {
 			return "return i;\n\n\n\n\n"; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "if (i != 123) {\n" //$NON-NLS-1$
-				+ " return i;\n" //$NON-NLS-1$
-				+ "} else {\n" //$NON-NLS-1$
-				+ " return 123;\n" //$NON-NLS-1$
-				+ "}\n"; //$NON-NLS-1$
+		return """
+			if (i != 123) {
+			 return i;
+			} else {
+			 return 123;
+			}
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/StrictlyEqualOrDifferentCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/StrictlyEqualOrDifferentCleanUp.java
index d1b25d36398..a65605fffb9 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/StrictlyEqualOrDifferentCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/StrictlyEqualOrDifferentCleanUp.java
@@ -84,18 +84,20 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.STRICTLY_EQUAL_OR_DIFFERENT)) {
-			return "" //$NON-NLS-1$
-					+ "boolean newBoolean1 = isValid == (i > 0);\n" //$NON-NLS-1$
-					+ "boolean newBoolean2 = isValid ^ isEnabled;\n" //$NON-NLS-1$
-					+ "boolean newBoolean3 = isActive == (0 <= i);\n" //$NON-NLS-1$
-					+ "boolean newBoolean4 = isActive ^ isEnabled;\n"; //$NON-NLS-1$
+			return """
+				boolean newBoolean1 = isValid == (i > 0);
+				boolean newBoolean2 = isValid ^ isEnabled;
+				boolean newBoolean3 = isActive == (0 <= i);
+				boolean newBoolean4 = isActive ^ isEnabled;
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "boolean newBoolean1 = isValid && (i > 0) || !isValid && (i <= 0);\n" //$NON-NLS-1$
-				+ "boolean newBoolean2 = !isValid && isEnabled || isValid && !isEnabled;\n" //$NON-NLS-1$
-				+ "boolean newBoolean3 = isActive ? (0 <= i) : (i < 0);\n" //$NON-NLS-1$
-				+ "boolean newBoolean4 = !isActive ? isEnabled : !isEnabled;\n"; //$NON-NLS-1$
+		return """
+			boolean newBoolean1 = isValid && (i > 0) || !isValid && (i <= 0);
+			boolean newBoolean2 = !isValid && isEnabled || isValid && !isEnabled;
+			boolean newBoolean3 = isActive ? (0 <= i) : (i < 0);
+			boolean newBoolean4 = !isActive ? isEnabled : !isEnabled;
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/StringBuilderCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/StringBuilderCleanUp.java
index 98e6d432cbe..8a398864b67 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/StringBuilderCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/StringBuilderCleanUp.java
@@ -115,18 +115,20 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.STRINGBUILDER)) {
-			return "" //$NON-NLS-1$
-					+ "StringBuilder variable = new StringBuilder();\n" //$NON-NLS-1$
-					+ "variable.append(\"foo\");\n" //$NON-NLS-1$
-					+ "variable.append(\"bar\");\n" //$NON-NLS-1$
-					+ "System.out.println(variable.toString());\n"; //$NON-NLS-1$
+			return """
+				StringBuilder variable = new StringBuilder();
+				variable.append("foo");
+				variable.append("bar");
+				System.out.println(variable.toString());
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "String variable = \"\";\n" //$NON-NLS-1$
-				+ "variable = variable + \"foo\";\n" //$NON-NLS-1$
-				+ "variable += \"bar\";\n" //$NON-NLS-1$
-				+ "System.out.println(variable);\n"; //$NON-NLS-1$
+		return """
+			String variable = "";
+			variable = variable + "foo";
+			variable += "bar";
+			System.out.println(variable);
+			"""; //$NON-NLS-1$
 	}
 
 	@Override
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/TryWithResourceCleanUp.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/TryWithResourceCleanUp.java
index b211857c7a6..a40e53cfca6 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/TryWithResourceCleanUp.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/fix/TryWithResourceCleanUp.java
@@ -61,20 +61,24 @@ public String[] getStepDescriptions() {
 	@Override
 	public String getPreview() {
 		if (isEnabled(CleanUpConstants.TRY_WITH_RESOURCE)) {
-			return "" //$NON-NLS-1$
-					+ "final FileInputStream inputStream = new FileInputStream(\"out.txt\");\n" //$NON-NLS-1$
-					+ "try (inputStream) {\n" //$NON-NLS-1$
-					+ "    System.out.println(inputStream.read());\n" //$NON-NLS-1$
-					+ "}\n\n\n"; //$NON-NLS-1$
+			return """
+				final FileInputStream inputStream = new FileInputStream("out.txt");
+				try (inputStream) {
+				    System.out.println(inputStream.read());
+				}
+				
+				
+				"""; //$NON-NLS-1$
 		}
 
-		return "" //$NON-NLS-1$
-				+ "final FileInputStream inputStream = new FileInputStream(\"out.txt\");\n" //$NON-NLS-1$
-				+ "try {\n" //$NON-NLS-1$
-				+ "    System.out.println(inputStream.read());\n" //$NON-NLS-1$
-				+ "} finally {\n" //$NON-NLS-1$
-				+ "    inputStream.close();\n" //$NON-NLS-1$
-				+ "}\n"; //$NON-NLS-1$
+		return """
+			final FileInputStream inputStream = new FileInputStream("out.txt");
+			try {
+			    System.out.println(inputStream.read());
+			} finally {
+			    inputStream.close();
+			}
+			"""; //$NON-NLS-1$
 	}
 
 	@Override