Java CopyOnWriteArraySet spliterator()用法及代碼示例

CopyOnWriteArraySet的spliterator()方法按適當的順序返回此Set中的元素的分隔符。在分離器上運行時無需同步。

用法:

public Spliterator spliterator()

返回值：該函數在Set中的元素上返回一個分隔符。

以下示例程序旨在說明上述函數：

示例1:

// Java Program to illustrate the CopyOnWriteArraySet 
// spliterator() method in Java 
  
import java.util.concurrent.CopyOnWriteArraySet; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create object of CopyOnWriteArraySet 
        CopyOnWriteArraySet<Integer> ArrSet 
            = new CopyOnWriteArraySet<Integer>(); 
  
        // Add elements 
        ArrSet.add(32); 
        ArrSet.add(67); 
        ArrSet.add(67); 
        ArrSet.add(100); 
  
        // print CopyOnWriteArraySet 
        System.out.println("CopyOnWriteArraySet: "
                           + ArrSet); 
  
        Spliterator<Integer> 
            numbers = ArrSet.spliterator(); 
  
        // print result from Spliterator 
        System.out.println("Set of Numbers:"); 
  
        // forEachRemaining method  of Spliterator 
        numbers 
            .forEachRemaining( 
                (n) -> System.out.println(n)); 
    } 
}

輸出：

CopyOnWriteArraySet: [32, 67, 100]
Set of Numbers:
32
67
100

示例2:

// Java Program to illustrate the CopyOnWriteArraySet 
// spliterator() method in Java 
  
import java.util.concurrent.CopyOnWriteArraySet; 
import java.util.*; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // create object of CopyOnWriteArraySet 
        CopyOnWriteArraySet<String> ArrSet 
            = new CopyOnWriteArraySet<String>(); 
  
        // Add elements 
        ArrSet.add("gopal"); 
        ArrSet.add("gfg"); 
        ArrSet.add("jgec"); 
        ArrSet.add("sudo"); 
  
        // print CopyOnWriteArraySet 
        System.out.println("CopyOnWriteArraySet: "
                           + ArrSet); 
  
        Spliterator<String> 
            numbers = ArrSet.spliterator(); 
  
        // print result from Spliterator 
        System.out.println("Set of strings:"); 
  
        // forEachRemaining method  of Spliterator 
        numbers 
            .forEachRemaining( 
                (n) -> System.out.println(n)); 
    } 
}

輸出：

CopyOnWriteArraySet: [gopal, gfg, jgec, sudo]
Set of strings:
gopal
gfg
jgec
sudo

參考： https://docs.oracle.com/javase/8/docs/api/java/util/concurrent/CopyOnWriteArraySet.html#spliterator–

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