public class WaitNNotifiyExample {
public static void main(String[] args) {
 String lockObject = "lock Object";
 RunnerClass runnerClass_1 = new RunnerClass("First Thread", lockObject);
 RunnerClass runnerClass_2 = new RunnerClass("Second Thread", lockObject);
 new Thread(runnerClass_1).start();
 new Thread(runnerClass_2).start();
 try {
  Thread.currentThread().sleep(100);//To ensure all threads in waiting stage
 } catch (InterruptedException e) {
  e.printStackTrace();
 }
 synchronized (lockObject) {
  lockObject.notify();//Line number 15
  //lockObject.notifyAll();
 }
}
}
class RunnerClass implements  Runnable {
public String runnerName;
public String locObject;
public RunnerClass(String runnerName, String lockObject){
 this.runnerName = runnerName;
 this.locObject = lockObject;
}
public void run() {
 try {
 synchronized (locObject) {
  System.out.println("The thread "+runnerName+" before wait executing");
  locObject.wait();
  System.out.println("The thread "+runnerName+" got notified");
 }
 } catch (InterruptedException e) {
  e.printStackTrace();
 }

}
}