Java多线程操作List

package com.hlss;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
* 类描述：多线程处理List
* @author Calvin Wu
*/
public class MultiThread {

// 用Collections.synchronizedList让list线程安全
public final static List<Long> list = Collections.synchronizedList(new ArrayList<Long>());

public static void main(String[] args) {
// 为List添加100个数据
for (int i = 1; i <= 100; i++) {
list.add(Long.valueOf(i));
}

MyThread myThread = new MyThread();
// 开启四个线程处理list数据
Thread t1 = new Thread(myThread);
t1.setName("线程1");
t1.start();

Thread t2 = new Thread(myThread);
t2.setName("线程2");
t2.start();

Thread t3 = new Thread(myThread);
t3.setName("线程3");
t3.start();

Thread t4 = new Thread(myThread);
t4.setName("线程4");
t4.start();
}

}



********************************************************************



package com.hlss;

import java.util.List;

public class MyThread implements Runnable {

private final List<Long> list = MultiThread.list;

@Override
public void run() {
for (int i = 0; i < list.size();) {
// 同步list，打印数据并删除该数据
synchronized (list) {
try {
//当前线程睡眠，让其它线程获得执行机会
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
System.out.println(Thread.currentThread().getName() + ":" + list.get(i));
list.remove(i);
}
}
}
}



********************************************************************

运行结果：

线程1:1
线程1:2
线程1:3
线程4:4
线程4:5
线程4:6
线程4:7
线程3:8
线程2:9
线程2:10
线程4:11
线程4:12
线程1:13
线程2:14
线程3:15
线程3:16
线程3:17
线程3:18
线程3:19
线程3:20
线程3:21
线程3:22
线程3:23
线程3:24
线程3:25
线程3:26
线程3:27
线程1:28
线程4:29
线程4:30
线程3:31
线程2:32
线程2:33
线程2:34
线程2:35
线程4:36
线程4:37
线程1:38
线程2:39
线程3:40
线程3:41
线程1:42
线程1:43
线程1:44
线程1:45
线程4:46
线程3:47
线程3:48
线程2:49
线程2:50
线程4:51
线程1:52
线程2:53
线程3:54
线程1:55
线程1:56
线程4:57
线程4:58
线程3:59
线程2:60
线程2:61
线程2:62
线程2:63
线程4:64
线程4:65
线程4:66
线程1:67
线程2:68
线程2:69
线程3:70
线程3:71
线程3:72
线程1:73
线程1:74
线程4:75
线程3:76
线程3:77
线程2:78
线程2:79
线程2:80
线程2:81
线程2:82
线程4:83
线程4:84
线程4:85
线程4:86
线程4:87
线程4:88
线程4:89
线程4:90
线程4:91
线程4:92
线程4:93
线程4:94
线程4:95
线程4:96
线程1:97
线程1:98
线程2:99
线程3:100