Tag Archives: многопоточность

public class Main {



class Tq {

     private int c = 0;

     public  synchronized void increment() {
         c++;
     }

     public synchronized  void decrement() {
         c--;
     }

     public  synchronized int value() {
         return c;
     }

 }


    public static void main(String[] args) {
        Tq c  = new Main().new Tq();
        c.value();
        Thread t1 =  new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println("thread1");
                for (int i = 0; i < 1000000 ; i++) {
                    c.increment();
                }
            }
        });


        Thread t2 =  new Thread(new Runnable() {
            @Override
            public void run() {
                for (int i = 0; i < 1000000 ; i++) {
                    c.decrement();
                }
                System.out.println("thread2");
            }
        });

        t1.start();
        t2.start();

        try {
            t1.join();
            t2.join();
        } catch ( Exception e ) {
            System.out.println("no");
        }
        System.out.println( c.value() );
    }