Programming Example
Comments in Java
In this program you will learn how to write Comments in Java.
In this program you will learn how to write Comments in Java.
Comments can be used to explain Java code, and to make it more readable. It can also be used to prevent execution when testing alternative code.
Single-line comments start with two forward slashes (//).
Any text between // and the end of the line is ignored by Java (will not be executed).
This example uses a single-line comment before a line of code:
// This is a comment System.out.println("Hello World");
This example uses a single-line comment at the end of a line of code:
System.out.println("Hello World"); // This is a comment
public class Sample {
/* This is my first java program.
* 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("This program is example of command");
}
}
This program is example of command
Now we will see multi-line Comments in java programming language
Multi-line comments start with /* and ends with */.
Any text between /* and */ will be ignored by Java.
This example uses a multi-line comment (a comment block) to explain the code:
/* The code below will print the words Hello World to the screen, and it is amazing */ System.out.println("Hello World");
It is up to you which you want to use. Normally, we use // for short comments, and /* */ for longer.
First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.