Java CopyOnWriteArrayList spliterator()用法及代碼示例

CopyOnWriteArrayList的spliterator()方法按適當的順序返回此列表中元素的分隔符。在分離器上運行時無需同步。

用法:

public Spliterator spliterator()

參數：該函數不接受任何參數。

返回值：該函數在列表中的元素上返回分隔符。

以下示例程序旨在說明上述函數：

示例1:

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

輸出：

CopyOnWriteArrayList: [32, 67, 67, 100]
list of Numbers:
32
67
67
100

示例2:

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

輸出：

CopyOnWriteArrayList: [gopal, gfg, jgec, sudo]
list of strings:
gopal
gfg
jgec
sudo

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

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