测试JUC安全类型的集合()

package edu.wtbu;import java.util.concurrent.CopyOnWriteArrayList;//测试JUC安全类型的集合public class Demo09 {    public static void main(String[] args) {        CopyOnWriteArrayList<String> list = new CopyOnWriteArrayList<>();        for (int i = 0; i < 1000; i++) {            new Thread(()->{                list.add(Thread.currentThread().getName());            }).start();        }        try {            Thread.sleep(3000);        } catch (InterruptedException e) {            throw new RuntimeException(e);        }        System.out.println(list.size());//1000    }}
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package edu.wtbu;import java.util.concurrent.CopyOnWriteArrayList;//测试JUC安全类型的集合public class Demo09 {    public static void main(String[] args) {        CopyOnWriteArrayList<String> list = new CopyOnWriteArrayList<>();        for (int i = 0; i < 1000; i++) {            new Thread(()->{                list.add(Thread.currentThread().getName());            }).start();        }        try {            Thread.sleep(3000);        } catch (InterruptedException e) {            throw new RuntimeException(e);        }        System.out.println(list.size());//1000    }}