hashset并发产生的java.util.ConcurrentModificationException解决办法

package com.yonge.concurrent;import java.util.Collections;import java.util.HashSet;import java.util.Iterator;import java.util.Random;import java.util.Set;/** * 需求：解决hashset并发产生的java.util.ConcurrentModificationException异常 * @author wb-gaoy * @version $Id: HashSetTest.java,v 0.1 2012-1-11 下午5:14:53 wb-gaoy Exp $ */public class HashSetTest {    public static void main(String[] args) {        final Set<Integer> set = Collections.synchronizedSet(new HashSet<Integer>());        //开启A线程向set中放数据        new Thread(new Runnable() {            @Override            public void run() {                int i;                while (true) {                    try {                        i = new Random().nextInt(1000);                        System.out.println("准备加入到Set...");                        set.add(i);                        System.out.println("加入到Set:" + i);                    } catch (Exception e) {                        e.printStackTrace();                        break;                    }                }                System.exit(0);            }        }, "A").start();        //开启B线程删除set中的数据        new Thread(new Runnable() {            @Override            public void run() {                Iterator<Integer> iter = null;                while (true) {                    synchronized (set) {                        try {                            iter = set.iterator();                            System.out.println("开始迭代..");                            int i;                            while (iter.hasNext()) {                                System.out.println("准备删除Set....");                                i = iter.next();                                iter.remove();                                System.out.println("删除Set：" + i);                            }                        } catch (Exception e) {                            e.printStackTrace();                            break;                        }                    }                }                System.exit(0);            }        }, "B").start();    }}

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