Java AtomicReferenceArray lazySet()用法及代碼示例

AtomicReferenceArray類的lazySet()方法用於將索引i處的元素值設置為newValue。索引i和newValue都作為參數傳遞給該方法。此方法使用VarHandle.setRelease(java.lang.Object…)指定的具有 memory 效應的值來設置值，以確保在此訪問之後不會重新排序先前的加載和存儲。

用法:

public final void lazySet(int i, E newValue)

參數：此方法接受：

i這是執行操作的AtomicReferenceArray的索引，
newValue 這是要設置的新值。

返回值：此方法不返回任何內容。

以下示例程序旨在說明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)); 
    } 
}

輸出：

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)); 
        } 
    } 
}

輸出：

參考文獻： https://docs.oracle.com/javase/10/docs/api/java/util/concurrent/atomic/AtomicReferenceArray.html#lazySet(int, E)

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注：本文由純淨天空篩選整理自AmanSingh2210大神的英文原創作品 AtomicReferenceArray lazySet() method in Java with Examples。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。