线程间共享数据的一个例子

package com.wsy.model;

import java.util.HashMap;
import java.util.Map;
import java.util.Random;

public class ThreadScopeShareData {
private static Map<Thread, Integer> threadDataMap = new HashMap<Thread, Integer>();

public static void main(String[] args) {
final A a = new A();
final B b = new B();

for (int i = 0; i < 2; i++) {
new Thread(new Runnable() {
@Override
public void run() {
int data = new Random().nextInt();
System.out.println(Thread.currentThread() + " data is "
+ data);
threadDataMap.put(Thread.currentThread(), data);
a.getData();
b.getData();
}
}).start();
}
}

static class A {

public void getData() {
System.out.println("A: data is "
+ threadDataMap.get(Thread.currentThread()) + " of "
+ Thread.currentThread().getName());
}

}

static class B {
public void getData() {
System.out.println("B: data is "
+ threadDataMap.get(Thread.currentThread()) + " of "
+ Thread.currentThread().getName());
}
}
}

输出结果：

Thread[Thread-0,5,main] data is 160847734

Thread[Thread-1,5,main] data is 1298550232

A: data is 1298550232 of Thread-1

A: data is 160847734 of Thread-0

B: data is 160847734 of Thread-0

B: data is 1298550232 of Thread-1