java多線程:線程體往外拋出異常的處理機制實踐

1當線程的線程體內部無捕獲異常，將異常拋出線程體外，不同情況下，程序處理機制

測試類

package com.ehking.bankchannel.domesticremit.facade.impl;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;


public class ThreadTest {

    private static Executor executor=Executors.newCachedThreadPool();
    
    
    public static void main(String[] args) {
        test01();
        //test02();
    }
    
    /**
     * 線程池，主線程往線程池提交任務（子線程）
     * 如果任務中有往外拋出異常，主線程並不會捕獲異常。
     * 是線程池捕獲了任務的異常
     */
    public static void test02(){
        
        ThreadTask aTask=new ThreadTask(1);
        ThreadTask aTask2=new ThreadTask(2);
        ThreadTask aTask3=new ThreadTask(6);
        List<ThreadTask> aList=new ArrayList<ThreadTask>();
        aList.add(aTask);
        aList.add(aTask2);
        aList.add(aTask3);
        try {
            for(ThreadTask a:aList){
                executor.execute(a);
            }
            System.out.println("ThreadTest.test02(沒有執行)");
        } catch (Exception e) {
            System.out.println("ThreadTest.test02()"+e);
        }
        
        
    }
    /**
     * 如果用匿名線程，匿名線程中有拋出異常，無捕獲的話，主線程是會捕獲這個異常
     */
    public static  void test01(){
        System.out.println("ThreadTest.test01()==>主線程運行開始");
        final List<String> list=new ArrayList<String>();
        try {
            list.add("sxf");
            list.add("chn");
            
            Thread thread=new Thread(new Runnable() {
                
                @Override
                public void run() {
                    System.out
                            .println("ThreadTest.test01().new Runnable() {...}.run()子線程加愛");
                    list.add("love");
                    System.out
                            .println("ThreadTest.test01().new Runnable() {...}.run()子線程拋出異常");
                    int a=3/0;
                    System.out
                            .println("ThreadTest.test01().new Runnable() {...}.run()z縣城結束");
                }
            });
            thread.start();
            
            
        } catch (Exception e) {
            System.out.println("ThreadTest.test01()子線程拋出異常"+e);
        }
        
        try {
            Thread.sleep(3000L);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        for(String aString:list){
            System.out.println("ThreadTest.test01()打印==>"+aString);
        }
        System.out.println("ThreadTest.test01()==>主線程運行結束");
    }
}

 線程類

package com.ehking.bankchannel.domesticremit.facade.impl;

public class ThreadTask implements Runnable{

    private int a;
    
    public ThreadTask(int a){
        this.a=a;
    }
    
    @Override
    public void run() {
        if(a%2==0){
            System.out.println("ThreadTask.run()【"+a+"】運行正常.......");
        }else{
            System.out.println("ThreadTask.run()【"+a+"】拋出異常");
            int s=2/0;
        }
        
    }

    
}