package demo.reorder;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class SynchronizedDemo {    private static volatile int i = 0;    private static volatile int j = 0;            public static void main(String[] args) {        Runnable thread1  = new Runnable() {                        @Override            public void run() {                while(true)                selfPlus();            }        };                Runnable thread2 = new Runnable() {                        @Override            public void run() {                while(true)                print();            }        };                ExecutorService pool = Executors.newFixedThreadPool(2);        pool.execute(thread1);        pool.execute(thread2);        pool.shutdown();    }        public static synchronized void selfPlus() {//        if(i != j)//        System.out.println("selfPlus: i= "+i+" ; j= "+j);        i++;        j++;//        if(i != j)//        System.out.println("selfPlus: i= "+i+" ; j= "+j);    }        public static void print(){        if(i < j)        System.out.println("i= "+i+" ; j= "+j);    }}