Determine if Two Trees are Identical

class Solution
{
    
	boolean isIdentical(Node root1, Node root2)
	{
	    if(root1==null || root2==null)
	    return (root1==root2);
	    
	    return(root1.data == root2.data)
	    && isIdentical(root1.left, root2.left)
          && isIdentical(root1.right, root2.right);
	}
	
}