ThreadLocal线程隔离
1 package com.cookie.test; 2 import java.util.concurrent.atomic.AtomicInteger; 3 /** 4 * author : cxq 5 * Date : 2019/6/20 6 * 测试ThreadLocal线程隔离 7 */ 8 public class ThreadLocalTest { 9 private static ThreadLocal<Integer> threadLocal = new ThreadLocal<>(); 10 private static AtomicInteger a = new AtomicInteger(100); 11 private static int b = 100 ; 12 public static void main(String[] args) { 13 new Thread(() -> { 14 try { 15 for (int i = 0; i < 100; i++) { 16 threadLocal.set(i); 17 // a.decrementAndGet(); 18 b -- ; 19 System.out.println(Thread.currentThread().getName() + "====" + threadLocal.get()); 20 // System.out.println(Thread.currentThread().getName() + "====" + a.get()); 21 // System.out.println(Thread.currentThread().getName() + "====" + b); 22 try { 23 Thread.sleep(100); 24 } catch (InterruptedException e) { 25 e.printStackTrace(); 26 } 27 } 28 } finally { 29 threadLocal.remove(); 30 } 31 }, "threadLocal1").start(); 32 new Thread(() -> { 33 try { 34 for (int i = 0; i < 100; i++) { 35 System.out.println(Thread.currentThread().getName() + "====" + threadLocal.get()); 36 // System.out.println(Thread.currentThread().getName() + "====" + a.get()); 37 System.out.println(Thread.currentThread().getName() + "====" + b); 38 try { 39 Thread.sleep(100); 40 } catch (InterruptedException e) { 41 e.printStackTrace(); 42 } 43 } 44 } finally { 45 threadLocal.remove(); 46 } 47 }, "threadLocal2").start(); 48 } 49 }
输出结果展示：
如果采用AtomicInteger a 或者常量 int b :
