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并发编程之线程基础
2022-08-11 05:12:00 【导演1995】
1.1什么是线程?
线程是进程中的一个实体,本身不会独立存在。进程是代码在数据集合上的一次运行活动,是系统进行资源分配和调度的基本单位,线程则是进程执行的一个执行路径,一个进程至少有一个线程,进程中的线程是共享进程的资源。
操作系统是把资源分配到进程,CPU是分配给线程。java中启动一个main函数就是一个jvm进程,main函数所在的线程就是其中的主线程,守护线程。

1.2线程创建于运行
java中有三种方式创建线程,分别是实现Runnable接口的run方法,继承Thread的重写run的方法,使用FutureTask方式
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