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• Multiline Comments: These comments help to write more than one line comments so that the logic of the code can
be explained in detail. Multiline comments begin with "/*" and end with "*/". For example:
void natural()
{
int i;
for(i=1;i<10;i++)
{
/* This loop runs from 1 to 10 and prints the value of i. The value of i is
incremented by 1 after every iteration. */
System.out.println(i);
}
}
• Documentation Comments: These comments are used to write the documentation part of the program, such as
the questions about the program, the name of the programmer, etc., at the beginning of the program. They do not
depict the program logic. A documentation comment starts with "/**" and ends with "*/".
For example:
/**
Write a program to print the square and cube of 10.
Code written by: Partha Saha
Date: 09/07/2021
*/
class cal
{
public static void main()
{
int a=10, sq, cu;
sq=a*a;
cu=a*a*a;
System.out.println("Square: " +sq);
System.out.println("Cube: " +cu);
}
}
When you run the preceding code, you will get the following output:
Square: 100
Cube: 1000
Let’s Revisit
® Initialization means to assign an initial value to a variable before using the variable in the program.
® We can take values using parameters passed to methods.
® The Scanner class is a predefined class in Java.
® An error is an abnormal condition that can stop the execution of a program or produce an abnormal output.
® There are three types of errors: syntax, logical and runtime errors.
® An exception is a situation in which the execution of a program stops abnormally.
® Comments are non-executable statements used to explain the code.
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