phoenix24

public class SyncTest {

    Boolean lock1 = true;

    public void testr() {
        String name = Thread.currentThread().getName();
        synchronized(lock1) {
            lock1 = !lock1;
            long time1 = System.currentTimeMillis();
            System.out.println("bef: name:" + name + ", time: " + time1 + ", lock1:" + lock1);

phoenix24

public class SyncTest {

    Boolean lock1 = true;

    public void testr() {
        String name = Thread.currentThread().getName();
        synchronized(lock1) {
            long time1 = System.currentTimeMillis();
            System.out.println("bef: name:" + name + ", time: " + time1 + ", lock1:" + lock1);

phoenix24

public class SyncTest {

    Character lock1 = 2;
  //Character lock1 = 200; //vs using this for lock.

    public void testr() {
        String name = Thread.currentThread().getName();
        synchronized(lock1) {
            long time1 = System.currentTimeMillis();
            System.out.println("bef: name:" + name + ", time: " + time1 + ", lock1:" + lock1);

phoenix24

public class SyncTest {

    Integer lock1 = 2;
  //Integer lock1 = 200; //vs using.

    public void testr() {
        String name = Thread.currentThread().getName();
        synchronized(lock1) {
            long time1 = System.currentTimeMillis();
            System.out.println("bef: name:" + name + ", time: " + time1 + ", lock1:" + lock1);

phoenix24

public class SyncTest {

    Boolean lock1 = false;

    public void testr() {
        String name = Thread.currentThread().getName();
        synchronized(lock1) {
            long time1 = System.currentTimeMillis();
            System.out.println("bef: name:" + name + ", time: " + time1 + ", lock1:" + lock1);
          

phoenix24

package io.zapscanner.admin;

public class SP14 {

    static class R extends Thread {
        @Override
        public synchronized void start() {
            System.out.println("in start, t:" + Thread.currentThread().getName());
        }

phoenix24

public class SP13 {

    static class R extends Thread {
        @Override
        public synchronized void start() {
            System.out.println("in start, t:" + Thread.currentThread().getName());
        }

        @Override
        public void run() {

phoenix24

public class SP11 {

    public synchronized SP11() {
    }

    public static void main(String[] args) {
        System.out.printf("Hello World! Synchronized Constructor!");
    }
}

phoenix24

public class SP4 {

    public synchronized void func1() {
        System.out.println("func1");
        func2();
    }

    public synchronized void func2() {
        System.out.println("func2");
        func3();

phoenix24

public class SP10 {
    public static void main(String[] args) {
        Thread t = new Thread();
        t.start();
        t.start();
    }
}