java Java 中的 AtomicReferenceArray lazySet()方法，带示例

Java 中的 AtomicReferenceArray lazySet()方法，带示例

原文:https://www . geeksforgeeks . org/atomicreferencearray-lazy set-method-in-Java-with-examples/

一个原子引用数组类的 lazySet() 方法用于将索引 I 处的元素的值设置为新值。索引 I 和 newValue 都作为参数传递给该方法。此方法将值设置为具有 varhandle . setrelease(Java . lang . object…)指定的内存效果，以确保先前的加载和存储在此访问后不会重新排序。

语法:

public final void lazySet(int i, E newValue)

参数:该方法接受:

i 是执行操作的原子引用数组的索引，
新值是要设置的新值。

返回值:此方法不返回任何内容。

下面的程序说明了 lazySet()方法: 程序 1:

// Java program to demonstrate
// AtomicReferenceArray.lazySet() method

import java.util.concurrent.atomic.*;

public class GFG {
    public static void main(String[] args)
    {
        // create an atomic reference object.
        AtomicReferenceArray<Integer> ref
            = new AtomicReferenceArray<Integer>(3);

        // set some value using lazySet() and print
        ref.lazySet(0, 1234);
        ref.lazySet(1, 4322);
        ref.lazySet(2, 2345);
        System.out.println("Value of index 0 = "
                           + ref.get(0));
        System.out.println("Value of index 1 = "
                           + ref.get(1));
        System.out.println("Value of index 2 = "
                           + ref.get(2));
    }
}

Output:

程序 2:

// Java program to demonstrate
// AtomicReferenceArray.lazySet() method

import java.util.concurrent.atomic.*;

public class GFG {

    public static void main(String[] args)
    {

        // create an atomic reference object
        AtomicReferenceArray<String>
            HIMALAYAN_COUNTRY
            = new AtomicReferenceArray<String>(5);

        // set some value
        HIMALAYAN_COUNTRY.lazySet(0, "INDIA");
        HIMALAYAN_COUNTRY.lazySet(1, "CHINA");
        HIMALAYAN_COUNTRY.lazySet(2, "PAKISTAN");
        HIMALAYAN_COUNTRY.lazySet(3, "BHUTAN");
        HIMALAYAN_COUNTRY.lazySet(4, "NEPAL");

        // print
        for (int i = 0; i < 5; i++) {
            System.out.println(
                HIMALAYAN_COUNTRY.get(i));
        }
    }
}