Comments in Java

comments are used to hide the program code, such as It provide the information or explanation about the variable, method, class or any statement.

Types of Comment in Java

Single Line Comment
Multi Line Comment
Documentation Comment

1) Single Line Comment in Java

Double forward slash are used in a single line that is called Single line comment is Single Line Comments (SLC).

Syntax:

Example:

 public class CommentEx1 {  
public static void main(String[] args) {  
    int i=5;//Here, i is a variable  
    System.out.println(i);  
}  
}  

Output

2) Multi Line Comment in Java

Multi line comment is used to comment multiple lines of code.

Syntax:

/* 
This  
is  
multi line  
comment 
*/  

Example:

 public class CommentEx1 {  
public static void main(String[] args) {
/* Let's declare and 
 print variable in java. */   
    int i=5; 
    System.out.println(i);  
}  
}  

Output

3) Documentation Comment in java

Documentation comment is used to create documentation API. To create documentation API, you need to use javadoc tool.

Syntax:

/** 
This  
is  
documentation  
comment 
*/ 

Example:

 /** The Calculator class provides methods to get addition and subtraction of given 2 numbers.*/  
public class Calculator {  
/** The add() method returns addition of given numbers.*/  
public static int add(int a, int b){return a+b;}  
/** The sub() method returns subtraction of given numbers.*/  
public static int sub(int a, int b){return a-b;}  
}  

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Comments in Java

Types of Comment in Java

1) Single Line Comment in Java

2) Multi Line Comment in Java

3) Documentation Comment in java