levis___的博客

1、ReadWriteLock 读写锁接口此接口提供readLock和writeLock两种锁一个资源可以被多个线程同时读，被一个线程写，但是读写线程不能同时存在。独占锁（写锁）一次只能被一个线程占有共享锁（读锁）多个线程可以同时占有读读不斥 读写互斥 写写互斥ReentrantReadWriterLock 重入读写锁示例：public class ReadWriterLockDemo { public static void main(String[] args) {

1、CountDownLatch每次有线程调用，countDown()数量-1，假设计数器变为0，countdownlatch.await()就会被唤醒，继续执行！`public class CountDownLatchDemo { public static void main(String[] args) throws InterruptedException { CountDownLatch countDownLatch = new CountDownLatch(6);

1、导入依赖<!--web依赖--><dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId></dependency><dependency> <groupId>org.thymeleaf.extras</gro

Spring-Mybatis常用依赖<dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </depe