AtomicReference getAcquire() method in Java with Examples

The getAcquire() method of a AtomicReference class is used to return the value of this AtomicReference object with memory ordering effects on getting variable is compatible with memory_order_acquire ordering.

Syntax:

public final V getAcquire()

Parameters: This method accepts nothing.
Return value: This method returns the current value of this AtomicReference object with memory ordering effects.

Below programs illustrate the getAcquire() method:

Program 1:

Java

// Java program to demonstrate
// AtomicReference.getAcquire() method

import java.util.concurrent.atomic.AtomicReference;

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

        // create an atomic reference object
        // which stores Integer.
        AtomicReference<Integer> ref
            = new AtomicReference<Integer>();

        // set some value
        ref.set(1632798372);

        // apply getAcquire() and print value
        int value = ref.getAcquire();
        System.out.println("value  = " + value);
    }
}

Output:

Program 2:

Java

// Java program to demonstrate
// AtomicReference.getAcquire() method
import java.util.concurrent.atomic.AtomicReference;

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

        // create an atomic reference object
        // which stores String.
        AtomicReference<String> ref
            = new AtomicReference<String>();

        // set some value
        ref.set("WELCOME TO "
                + "GEEKS FOR GEEKS"
                + " LEARN AND APPLY");

        // apply getAcquire and print value
        String value = ref.getAcquire();
        System.out.println(value);
    }
}

Output:

Reference: https://docs.oracle.com/javase/10/docs/api/java/util/concurrent/atomic/AtomicReference.html#getAcquire()