Java Decrement

Java Decrement Operator

Java Decrement operator takes single operand as input and decrements the value of operand by 1..

-- symbol is used for Decrement Operator.

Syntax – Decrement Operator

Following is the syntax for Decrement Operator.

--operand
//or
operand--

The first form of decrement is called pre-decrement. The value of the operand in returned and then the decrement happens.

The first form of decrement is called post-decrement. The value of the operand is decremented and then the value is returned.

The operand could be of any numeric datatype.

Example 1 – Decrement Integer

In the following example, we shall take an integer and decrement its value by one using Decrement operator.

Java Program

public class DecrementExample {
	public static void main(String[] args) {
		int a = 7;
		a--;
		System.out.print(a);
	}
}

Output

6

Let us use pre-decrement form, and decrement the value.

Java Program

public class DecrementExample {
	public static void main(String[] args) {
		int a = 7;
		System.out.println(--a);
		System.out.print(a);
	}
}

Output

6
6

Example 2 – Decrement Floating Point Value

In the following program, we shall decrement a float.

Java Program

public class DecrementExample {
	public static void main(String[] args) {
		float a = 7.2f;
		a--;
		System.out.print(a);
	}
}

Output

6.2

Conclusion

In this Java Tutorial, we learned how to use Java Decrement Operator.