CountDownLatch同步工具类

CPU-Code · CPU-Code · commit 82ea1ec27359 · 2021-07-30T16:06:59.000+08:00
diff --git a/thread/README.md b/thread/README.md
@@ -139,6 +139,7 @@
 ## [Condition](src/main/java/com/cpucode/java/condition)
 
 - [x] [Condition](src/main/java/com/cpucode/java/condition/ConditionDemo.java)
+    - [x] [CountDownLatch同步工具类](src/main/java/com/cpucode/java/condition/CountDownLatchDemo.java)
 
 - [返回文件目录](#文件目录)
 
diff --git a/thread/src/main/java/com/cpucode/java/condition/CountDownLatchDemo.java b/thread/src/main/java/com/cpucode/java/condition/CountDownLatchDemo.java
@@ -0,0 +1,38 @@
+package com.cpucode.java.condition;
+
+import java.util.concurrent.CountDownLatch;
+
+/**
+ * @author : cpucode
+ * @date : 2021/7/30
+ * @time : 15:59
+ * @github : https://github.com/CPU-Code
+ * @csdn : https://blog.csdn.net/qq_44226094
+ */
+public class CountDownLatchDemo extends Thread{
+    public static void main(String[] args) throws InterruptedException {
+        CountDownLatch countDownLatch = new CountDownLatch(3);
+
+        new Thread(()-> {
+            System.out.println("" + Thread.currentThread().getName() + "-执行中");
+            countDownLatch.countDown();
+
+            System.out.println(""+Thread.currentThread().getName()+"-执行完毕");
+        },"t1").start();
+
+        new Thread(()->{
+            System.out.println(""+Thread.currentThread().getName()+"-执行中");
+            countDownLatch.countDown();
+            System.out.println(""+Thread.currentThread().getName()+"-执行完毕");
+        },"t2").start();
+
+        new Thread(()->{
+            System.out.println(""+Thread.currentThread().getName()+"-执行中");
+            countDownLatch.countDown();
+            System.out.println(""+Thread.currentThread().getName()+"-执行完毕");
+        },"t3").start();
+
+        countDownLatch.await();
+        System.out.println("所有线程执行完毕");
+    }
+}
