The ! operator is a logical compliment operator. The operator inverts the value of a boolean expression.

package org.kodejava.example.fundamental;

public class NegationOperator {
    public static void main(String[] args) {
        // negate the result of boolean expressions
        boolean negate = !(2 < 3);
        boolean value = !false;

        System.out.println("result: " + negate);
        System.out.println("value : " + value);
    }
}

Here is the result of the program:

result: false
value : true

• Author
• Recent Posts

Wayan Saryada

Founder at Kode Java Org

I am a programmer, a runner, a recreational diver, currently live in the island of Bali, Indonesia. Mostly programming in Java, Spring Framework, Hibernate / JPA. If these posts help, you can support me, buy me a cup of coffee or tea. Thank you 🥳

Latest posts by Wayan Saryada (see all)

• How do I convert java.util.TimeZone to java.time.ZoneId? - April 25, 2020
• How do I get a list of all TimeZones Ids using Java 8? - April 25, 2020
• How do I get HTTP headers using HttpClient HEAD request? - April 22, 2020