ThreadLocal简单使用示例

ThreadLocal为每个线程提供单独的数据副本，线程间的数据为自身线程所独有(不存在共享变量问题)，直接看代码

 public class ThreadLocalTest {

      private static ThreadLocal<List<String>> threadLocal = new ThreadLocal<>();

     public void setThreadLocal(List<String> value) {

            threadLocal.set(value);
     }

     public void getThreadLocal() {

            threadLocal.get().foreach(name -> System.out.println(Thread.currentThread().getName()+"###" + name ));
     }

     public static void main(String[] args) {

              final ThreadLocalTest test = new ThreadLocalTest();

              new Thread(new Runnable() {
             @Override
             public void run() {
                 List<String> strs = new ArrayList<String>();
                 strs.add("1");
                 strs.add("2");
                 strs.add("3");
                 t.setThreadLocal(strs);
                 t.getThreadLocal();
             }
         },"t1").start();

         new Thread(new Runnable() {

             @Override
             public void run() {
                 List<String> strs = new ArrayList<String>();
                 strs.add("a");
                 strs.add("b");
                 t.setThreadLocal(strs);
                 t.getThreadLocal();
             }
         },"t2").start();
     }

 }

t1 t2线程各自获取到自己的线程的所属的变量