Java中的 AtomicReference getAcquire() 方法及示例

AtomicReference类的getAcquire()方法用于返回此 AtomicReference 对象的值，对获取变量的内存排序效果与 memory_order_acquire 排序兼容。

句法：

public final V getAcquire()

参数：此方法不接受任何内容。
返回值：此方法返回此 AtomicReference 对象的当前值，具有内存排序效果。

下面的程序说明了 get() 方法：

方案一：

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 ref
            = new AtomicReference();
 
        // set some value
        ref.set(1632798372);
 
        // apply getAcquire() and print value
        int value = ref.getAcquire();
        System.out.println("value  = " + value);
    }
}

输出：

方案二：

Java

// Java program to demonstrate
// AtomicReference.get() 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 ref
            = new AtomicReference();
 
        // 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);
    }
}

输出：

参考： https: Java/util/concurrent/atomic/AtomicReference.html#getAcquire()