[知了堂學習筆記]_鎖的使用

主線程和子線程同時使用一個對象（this對象）

package thread;

public class Thread_7 {

    public static void main(String[] args) throws InterruptedException {
        Mythread m = new Mythread();
        Thread t = new Thread(m);
        t.start();
        m.m1("主線程1");   
        Thread.sleep(1000);
        m.m2("主線程2");


    }

}
class Mythread implements Runnable{

    private int b = 100;

    public synchronized void m1(String name){
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        System.out.println("m1:"+b+""+name);
    }
    public synchronized void m2(String name){
        /*Thread.sleep(1000);*/
        b = 200;
        System.out.println("m2:"+b+""+name);
    }
    @Override
    public void run() {
        System.out.println("進入子線程");
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
            m1("子線程");
    }

}