Java终止线程实例和stop()方法源码阅读

package com.rainmonth;
/**
* Created by RandyZhang on 2017/3/23.
*/
public class FlagExitThread extends Thread {
	public volatile Boolean isExit = false;
	public FlagExitThread(String name) {
		super(name);
	}
	@Override
	  public void run() {
		while (!isExit) {
			System.out.println("I'm running");
		}
	}
}

package com.rainmonth;
/**
* Created by RandyZhang on 2017/3/23.
*/
public class DemoClient {
	public static void main(String[] args) {
		System.out.println("优雅的终止线程实例");
		exitByFlag();
		// exitByInterrupt();
	}
	private static void exitByFlag() {
		FlagExitThread flagExitThread = new FlagExitThread(FlagExitThread.class.getSimpleName());
		flagExitThread.start();
		try {
			Thread.sleep(1000);
			flagExitThread.isExit = true;
			flagExitThread.join();
			System.out.println("线程退出");
		}
		catch (InterruptedException e) {
			e.printStackTrace();
		}
	}
	private static void exitByInterrupt() {
		FlagExitThread flagExitThread = new FlagExitThread(FlagExitThread.class.getSimpleName());
		System.out.println("flagExitThread running...");
		flagExitThread.start();
		try {
			Thread.sleep(1500);
			System.out.println("flagExitThread interrupted...");
			flagExitThread.interrupt();
			Thread.sleep(1500);
			System.out.println("stop application...");
		}
		catch (InterruptedException e) {
			e.printStackTrace();
		}
	}
}

/*
* This method is inherently unsafe. Stopping a thread with
* Thread.stop causes it to unlock all of the monitors that it
* has locked (as a natural consequence of the unchecked
* <code>ThreadDeath</code> exception propagating up the stack). If
* any of the objects previously protected by these monitors were in
* an inconsistent state, the damaged objects become visible to
* other threads, potentially resulting in arbitrary behavior. Many
* uses of <code>stop</code> should be replaced by code that simply
* modifies some variable to indicate that the target thread should
* stop running. The target thread should check this variable
* regularly, and return from its run method in an orderly fashion
* if the variable indicates that it is to stop running. If the
* target thread waits for long periods (on a condition variable,
* for example), the <code>interrupt</code> method should be used to
* interrupt the wait.
*/