Re: VERY PECULIAR PROBLEM

From:

Robbie Brown <rob@example.com>

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 12 Mar 2015 19:29:41 +0000

Message-ID:

<mdspdo$1pu$1@dont-email.me>

On 12/03/15 18:38, Doug Mika wrote:

Hi to all, I don't know what is wrong with the following method. It is a method inside a Timer class that extends Thread. The peculiar problem is that IF i include the System.out.print(""); line in the method, the program works FINE, if however I delete the System.out.print(""); methods or REM it out, the program doesn't count time? How Could that one line which does NOTHING cause the entire program to function correctly?

  public void run(){
         long timeStamp = System.currentTimeMillis();

         while(true){
             if(timeStamp + 1000 <= System.currentTimeMillis()){
                 timeStamp = System.currentTimeMillis();

                 System.out.print("");
                 if(this.paused==false){
                     this.secCount++;

                     this.hrs = (int)this.secCount / 3600;
                     this.min = (int)(((int)(this.secCount % 3600))/60);
                     this.sec = (int)this.secCount % 60;

                     if(this.debug) System.out.println("Timer: "+this.hrs+":"+this.min+":"+this.sec);
                 }
             }
         }
     }

Much thanks for any ideas, I have NO IDEA why a System.out.print statement could impact the functioning of this program to such an extent?
Doug

Hmm, I just wrapped your code in a *simple* test class and ran it, it
produces output with or without the System.out, I think you should be
looking elsewhere.

package com.foo;

public class TimerTest extends Thread{

    int hrs, min, sec, secCount;
    boolean debug = true;
    boolean paused = false;

    public void run(){
         long timeStamp = System.currentTimeMillis();

         while(true){
             if(timeStamp + 1000 <= System.currentTimeMillis()){
                 timeStamp = System.currentTimeMillis();

                 //System.out.print("");
                 if(this.paused==false){
                     this.secCount++;

                     this.hrs = (int)this.secCount / 3600;
                     this.min = (int)(((int)(this.secCount % 3600))/60);
                     this.sec = (int)this.secCount % 60;

                     if(this.debug) System.out.println("Timer:
"+this.hrs+":"+this.min+":"+this.sec);
                 }
             }
         }
     }

    public static void main(String[] args){
        new TimerTest().start();
    }

}

//output

Timer: 0:0:1
Timer: 0:0:2
Timer: 0:0:3
Timer: 0:0:4
Timer: 0:0:5
Timer: 0:0:6
Timer: 0:0:7
.... etc

--
Not floundering ... just fishing