java的CopyOnWriteArrayList示例，,java的CopyOnW

java的CopyOnWriteArrayList示例，,java的CopyOnW

java的CopyOnWriteArrayList示例：

import java.util.ArrayList;import java.util.Arrays;import java.util.Iterator;import java.util.List;public class CopyOnWriteArrayList1Test {  public static void main(String[] args) {    List<String> list=new ArrayList<String>();    for(int i=0; i<5; i++) {        list.add("parent "+i);    }    Iterator<String> ite=list.iterator();    String first=ite.next();    System.out.println("Main "+first);    Worker worker=new Worker(list);    worker.start();    while(ite.hasNext()) {        ranSleep(1000);        System.out.println("Main "+ite.next());    }  }  public static void ranSleep(int millis) {      try {          Thread.sleep( (int)(Math.random()*millis));      }catch (Exception e) {};  }  public static class Worker extends Thread {      private List<String> list;      public Worker(List<String> list) {          this.list=list;      }      @Override      public void run() {          for(int i=0; i<5; i++) {              list.add("child "+i);              ranSleep(100);          }          for(int i=0; i<list.size(); i++) {              System.out.println("In Child item="+list.get(i));          }      }  }}