Java Spliterator trySplit()用法及代碼示例

Java Interface Spliterator 的 trySplit() 方法用於拆分調用的拆分器。如果此拆分器可以分區，則返回對該分區的新拆分器的引用，否則返回 null。

用法

以下是 trySplit() 方法的聲明-

Spliterator<T> trySplit()

參數

此方法不接受任何參數。

trySplit() 方法返回一個覆蓋部分元素的拆分器，如果此拆分器無法拆分，則返回 null。

異常

兼容版本

Java 1.8 及以上

例子1

import java.util.*;
public class InterfaceSpliteratorTrySplitExample1 {  
	public static void main (String[] args) {
		List<String> list = Arrays.asList("Java", "Android", "MySQL", "Python");
		Spliterator<String> splitr = list.spliterator();
		Spliterator<String> st = splitr.trySplit();
		splitr.forEachRemaining(System.out::println);
		System.out.println("--Traversing the other half of the spliterator---");
		st.forEachRemaining(System.out::println);
    }
}

輸出：

MySQL
Python
--Traversing the other half of the spliterator---
Java
Android

例子2

import java.util.*;
import java.util.stream.Stream;
public class InterfaceSpliteratorTrySplitExample2 {  
     public static void main(String args[]){
    	   //Create an object of array list
         ArrayList<Integer> list = new ArrayList<>();             
         //Add values to the array list.
         list.add(101);
         list.add(201);
         list.add(301);
         list.add(401);
         list.add(501);                      
         Stream<Integer> str = list.stream();             
         //Get Spliterator object on list
         Spliterator<Integer> splitr1 = str.spliterator();                             
         System.out.println("Elements of ArrayList:");
         //forEachRemaining method    
         splitr1.forEachRemaining((n) -> System.out.println(n));         
         //Obtaining another Stream to the array list.
         Stream<Integer> str1 = list.stream();
         splitr1 = str1.spliterator();          
         //Use trySplit() method
         Spliterator<Integer> splitr2 = splitr1.trySplit();        
         System.out.println("Output from splitr2:");
         splitr2.forEachRemaining((n) -> System.out.println(n));        
         //Now, use the splitr
         System.out.println("Output from splitr1:");
         splitr1.forEachRemaining((n) -> System.out.println(n));
         }
}

輸出：

Elements of ArrayList:
101
201
301
401
501
Output from splitr2:
101
201
Output from splitr1:
301
401
501

相關用法

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