Streams

src/main/java/se/edu/streamdemo/Main.java

@@ -13,12 +13,12 @@ public static void main(String[] args) {
         ArrayList<Task> tasksData = dataManager.loadData();
 
         System.out.println("Printing all data ...");
-        printAllData(tasksData);
+        printAllDataUsingStreams(tasksData);
 
         System.out.println("Printing deadlines ...");
-        printDeadlines(tasksData);
+        printAllDeadlineUsingStreams(tasksData);
 
-        System.out.println("Total number of deadlines: " + countDeadlines(tasksData));
+        System.out.println("Total number of deadlines: " + coundDeadlineUsingStreams(tasksData));
 
     }
 
@@ -38,6 +38,23 @@ public static void printAllData(ArrayList<Task> tasksData) {
         }
     }
 
+    /** The following method implements the previous one using streams instead of a for each loop
+     *
+     * @param tasks
+     */
+    public static void printAllDataUsingStreams(ArrayList<Task> tasks) {
+        tasks.stream().forEach(System.out::println);
+    }
+    public static void printAllDeadlineUsingStreams(ArrayList<Task> tasks) {
+        tasks.stream().filter((t) -> t instanceof Deadline).forEach(System.out::println);
+    }
+    private static int coundDeadlineUsingStreams(ArrayList<Task> tasks) {
+        int count = 0;
+        count = (int) tasks.stream()
+                .filter((t) -> t instanceof Deadline).count();
+        return count;
+    }
+
     public static void printDeadlines(ArrayList<Task> tasksData) {
         for (Task t : tasksData) {
             if (t instanceof Deadline) {