灾变之刃的博客

1，同步代码块结合双检查锁机制实现单例package com.thread;public class Singleton { private static Singleton instance = null; /** * 同步代码块结合双检查锁机制实现单例 * * @return */ public static Singleton getInstance() { ...

1，ExecutorService结合线程池package com.asyn;import java.util.Date;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class ExecutorServiceTest { private static...

1，quartzpackage quantz;import java.util.Date;import org.quartz.CronScheduleBuilder;import org.quartz.Job;import org.quartz.JobBuilder;import org.quartz.JobDetail;import org.quartz.JobExecution...