AtomicBoolean lazySet() method in Java with Examples

The java.util.concurrent.atomic.AtomicBoolean.lazySet() 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 lazySet(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 program that demonstrates
// the lazySet() 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.lazySet(true);

        // Prints the updated value
        System.out.println("Current value: "
                           + val);
    }
}

Output:

Previous value: false
Current value: true

Program 2:

// Java program that demonstrates
// the lazySet() 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.lazySet(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#lazySet-boolean-