qq_40577921的博客

package com.itjava.interview; //枚举 public enum ContryEnum { //简单的数据库存在枚举中 ONE(1,"齐"),TWO(2,"楚"),THREE(3,"燕"),FOUR(4,"赵"),FIVE(5,"魏"),SIX(6,"韩"); private Integer retCode; private St...

/** * 第4种获得/使用java多线程的方式,线程池 */ public class MyThreadPoolDemo { public static void main(String[] args) { //查看cpu核心数 从而 合理的配置线程池的容量 System.out.println(Runtime.getRuntime().avail...

package com.itjava.interview; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; /** * 第4种获得/使用java多线程的方式,线程池 */ public class MyThreadPoolDemo { public stati...

package com.itjava.interview; import java.util.ArrayList; import java.util.concurrent.ArrayBlockingQueue; import java.util.concurrent.TimeUnit; /** 1 队列 2 阻塞队列 2.1 阻塞队列有没有好的一面 比如餐厅吃饭 2.2 不得不...

package com.itjava.interview; import java.util.HashMap; import java.util.Map; import java.util.concurrent.TimeUnit; import java.util.concurrent.locks.ReentrantReadWriteLock; //读写锁 ReentrantReadWr...

package com.itjava.interview; import java.util.concurrent.BrokenBarrierException; import java.util.concurrent.CyclicBarrier; public class CyclicBarrierDemo { public static void main(String[] a...

package com.itjava.interview; import java.util.concurrent.CountDownLatch; public class CountDownLatchDemo { public static void main(String[] args) throws InterruptedException { Count...

package com.itjava.interview; import java.util.concurrent.Callable; import java.util.concurrent.ExecutionException; import java.util.concurrent.FutureTask; /*class MyThread implements Runnable{ ...

package com.itjava.interview; import java.util.concurrent.ArrayBlockingQueue; import java.util.concurrent.BlockingQueue; import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.Atom...

package com.itjava.interview; import java.util.concurrent.locks.Condition; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; /** * Synchronized和 ReentrantLoc...

package com.itjava.interview; import java.util.concurrent.locks.Condition; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; class ShareData { //资源类 pr...

package com.itjava.interview; import java.util.concurrent.SynchronousQueue; import java.util.concurrent.TimeUnit; //阻塞队列SynchronousQueue 生产一个，消费一个，不存储 ！ public class SynchronousQueueDemo { pu...

package com.itjava.interview; import java.util.concurrent.Semaphore; import java.util.concurrent.TimeUnit; public class SemaphoreDemo { public static void main(String[] args) { Semapho...

package com.itjava.interview; import java.security.PublicKey; import java.util.concurrent.TimeUnit; import java.util.concurrent.atomic.AtomicReference; //自旋锁 public class SpinLockDemo { //原子引用...

package com.itjava.interview; import java.util.concurrent.TimeUnit; class HoldLockThread implements Runnable { private String lockA; private String lockB; public HoldLockThread(String ...