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Comments in Java

What are the comments in Java?

How to comment code in Java?

Java supports single line and multi-line comments very similar to c and c++. All characters available inside any comment are ignored by Java compiler.

public class MyFirstJavaProgram
 /* This is my first java program. This will print 'Hello World' as the output. This is an example of multi-line comments. */
 public static void main(String []args)
  // This is an example of single line comment
  /* This is also an example of single line comment.*/ 
  System.out.println("Hello World");


Using Blank Lines:
A line containing only whitespace, possibly with a comment, is known as a blank line, and Java totally ignores it.