Thread resume

Question

cant resume the thread after thread wait is called
plz help
import javax.swing.*;
import java.awt.*;
import java.util.*;
public class numbers {
     filee p=new filee();
     Thread t=new Thread(new sclass());
     public static void main(String []args){
          numbers n=new numbers();
          n.all();
          n.resume();
        public void all(){
              t.start();
        public void resume(){
             String input=JOptionPane.showInputDialog(null, "Enter 1 to resume");
            if(input.equals("1")){
                  p.resume();
class sclass implements Runnable{
     filee f=new filee();
     public void run(){
          f.printnum();
class filee{
     int i;
     public synchronized void printnum(){
          for(i=0;i<100;i++){
               System.out.print(i);
               if(i==50){
                    try{
                    Thread.sleep(4000);
                    }catch(Exception e){
               if(i==60){
                    try{
                         wait();
                    }catch(Exception e){
                         System.out.println(e);
     public synchronized void resume(){
          notifyAll();
}

Answer 1

The wait()-method doesn't work like that.
Read the tutorial, or maybe the full tutorials about that.
Edit: I now see you're not invoking the (deprecated) resume-method on Thread, but on a Filee-object. The problem is that you have to invoke notifyAll() on the SAME object as you invoked wait() on, and you obviously don't do that.
Edited by: Peter_vd_Wal on 30-mei-2009 11:21