On OpenJdk 11 the implementation of ThreadPoolExecutor's setCorePoolSize was changed and contains an additional constraints comparing the maxPoolSize and corePoolSize values. If maxPoolSize is not ...

Java is a popular computing platform, but lately, Java is blamed for its security vulnerabilities. It is recommended by many to disable or completely uninstall Java. However, there are applications ...

Java中的线程池是用ThreadPoolExecutor类来实现的. 本文就结合JDK 1.8对该类的源码来分析一下这个类内部对于线程的创建, 管理以及后台任务的调度等方面的执行原理。 先看一下线程池的类图： Executor框架接口 ...

为Java线程池默认的阻塞策略，不执行此任务，而且直接抛出一个运行时异常，切记ThreadPoolExecutor.execute需要try catch，否则程序会直接退出。 DiscardPolicy 直接抛弃，任务不执行，空方法 DiscardOldestPolicy 从队列里面抛弃head的一个任务，并再次execute 此task。 CallerRunsPolicy ...

when i use the application （1.2.9） to manager the kafka ， I found that it always can not run perfectly 。 Firstly，when I use the passsive offsetcash （pathchildcash），it will tell me that ask timeout 。。。

Although jstack (Java Stack Trace) is a useful tool for learning more about a how a Java thread is behaving, VisualVM is an even easier method for obtaining the same type of information. It is easy to ...