AtomicBoolean set() method in Java with Examples

Last Updated : 27 Feb, 2019
The java.util.concurrent.atomic.AtomicBoolean.set() is an inbuilt method in java that updates the previous value and sets it to a new value which is passed in the parameter. Syntax: 
public final void set(boolean newVal)
Parameters: The function accepts a single mandatory parameter newVal which is to be updated. Return Value: The function does not returns anything. Below programs illustrate the above function: Program 1: Java 
// Java program that demonstrates
// the set() function

import java.util.concurrent.atomic.AtomicBoolean;

public class GFG {
    public static void main(String args[])
    {

        // Initially value as false
        AtomicBoolean val
            = new AtomicBoolean(false);

        System.out.println("Previous value: "
                           + val);

        val.set(true);

        // Prints the updated value
        System.out.println("Current value: "
                           + val);
    }
}
Output: 
Previous value: false
Current value: true
Program 2: Java 
// Java program that demonstrates
// the set() function

import java.util.concurrent.atomic.AtomicBoolean;

public class GFG {
    public static void main(String args[])
    {

        // Initially value as true
        AtomicBoolean val
            = new AtomicBoolean(true);

        System.out.println("Previous value: "
                           + val);

        val.set(false);

        // Prints the updated value
        System.out.println("Current value: "
                           + val);
    }
}
Output: 
Previous value: true
Current value: false
Reference: https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/atomic/AtomicBoolean.html#set-boolean-
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