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📜  Java中的 AtomicReferenceArray set() 方法及示例

📅  最后修改于: 2022-05-13 01:54:50.802000             🧑  作者: Mango

Java中的 AtomicReferenceArray set() 方法及示例

AtomicReferenceArray类的set()方法用于将索引 i 处的元素的值设置为 newValue。索引 i 和 newValue 都作为参数传递给该方法。此方法使用读取的内存语义设置值,就好像变量被声明为 volatile 类型的变量一样。

句法:

public final void set(int i, E newValue)

参数:此方法接受:

  • i是执行操作的 AtomicReferenceArray 的索引,
  • newValue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 set() 方法:
方案一:

// Java program to demonstrate
// AtomicReferenceArray.set() method
  
import java.util.concurrent.atomic.*;
  
public class GFG {
  
    public static void main(String[] args)
    {
  
        // create an atomic reference object.
        AtomicReferenceArray ref
            = new AtomicReferenceArray(5);
  
        // set some value and print
        ref.set(0, 2345);
        ref.set(1, 543);
        ref.set(2, 322);
  
        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));
    }
}
输出:
Value of index 0 = 2345
Value of index 1 = 543
Value of index 2 = 322

方案二:

// Java program to demonstrate
// AtomicReferenceArray.set() method
  
import java.util.concurrent.atomic.*;
  
public class GFG {
  
    public static void main(String[] args)
    {
  
        // create an atomic reference object.c
        AtomicReferenceArray ref
            = new AtomicReferenceArray(5);
  
        // set some value
        ref.set(0, "C");
        ref.set(1, "PYTHON");
        ref.set(2, "TS");
        ref.set(3, "C++");
        ref.set(4, "C");
  
        // print
        for (int i = 0; i < 5; i++) {
            System.out.println(ref.get(i));
        }
    }
}
输出:
C
PYTHON
TS
C++
C

参考: https: Java/util/concurrent/atomic/AtomicReferenceArray.html#set(int, E)