Javaキーワードvolatileの詳細

public class HelloWorld {
    boolean flag = true;
	Executor executor = Executors.newFixedThreadPool(4);
	public static void main(String[] args) {
		new HelloWorld().run();
	}
	void run(){
		executor.execute(new T1());
		executor.execute(new T2());
	}
	
	class T1 implements Runnable{
 
		public void run() {
			while(flag){
				int i = 0 ;
				System.out.println(i++);
			}
		}
	}
	class T2 implements Runnable{
		public void run(){
			while(flag){
				try {
				Thread.sleep(1000);
				 flag = false ;
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
		}
	}
}