线程间操作List

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

public class ConcurrentList { //private static List TEST_LIST = new CopyOnWriteArrayList (); private static List TEST_LIST = Collections.synchronizedList(new ArrayList ());

public static void main(String[] args) {
    new Thread(new Runnable() {
        @Override
        public void run() {
            while (true) {
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                synchronized (TEST_LIST) {
                    TEST_LIST.add("11");
                }
                System.out.println("Thread1 running");
            }
        }
    }).start();

    new Thread(new Runnable() {
        @Override
        public void run() {
            while (true) {
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                synchronized (TEST_LIST) {
                    for (String at : TEST_LIST) {
                        TEST_LIST.add("22");
                    }
                }
                System.out.println("Thread2 running");
            }
        }
    }).start();
}

}

List list = Collections.synchronizedList(new ArrayList());