hello, I've been browsing the site and found some helpful info.  However, its all in pieces.  I'm trying to make a timer in a window that counts minutes and seconds.  I would like to be able to start it and stop it by mouse click on either the clock or a separate start/stop "button".  Also each time it stops, when it clicked again it starts from 0.
Is this possible?  It seems like it is but I just can't put the code together for it.
Thanks,
D

yeah i've been fooling around with that but having a rough time.
Basically I need the timer to just read seconds and minutes.
so it looks like this "00:00".  I'll take that number and put it in a rectangle in my current window.
I'd also like to be able to start and stop with a mouseclick, but only if I click on an individual "button" if that is possible.
Thanks, I'll keep tooling around with the timer code.

Quote:

Processing is Java. You don't need to add any library to run Java code in Processing. Please report your code and error message if you want more help.

Quote:

PhiLho pointed out a useful link which does almost all what you want. Why don't you just reuse the code?

If you have syntax or code issues, please report the code so we can help.

You haven't posted any source code...  So not sure how we can help.

However 'Stopwatch.java' looks to me like this.  And if you cut and paste that into Processing and run it, it doesn't work (no surprises there), with the error you quote...

Whilst "Processing is Java", this doesn't mean you can simply drop any old Java code in and expect it to run, as you have discovered.  There's some stuff going on behind the scenes that makes things a little more complicated than that: for example Processing expects to find a setup function.  If you transfer the code from the main method in the linked URL to setup you can get it to run without any errors (though you'd still need to adapt it to your purpose)...  However I don't think that's going to help you learn processing, so I'm not going to explain it further.

You'd do much better to look at PhilHo's link and figure out how that works before moving on to class definitions, unless you've already used these in other languages...  i.e. learn to walk before you start trying to run

never mind.. i figured it out.  Thanks.
now to get it to show in mm:ss .

Code:

int startingTime;
float TextFont;

void setup() {
	 size(400, 400);
	 PFont font= loadFont("Verdana-12.vlw");
	 textFont(font);
	 
	 
	 startingTime = millis();
     }
		  
     void draw() {
	background(255,255,255);
	 
	 int seconds = (millis() - startingTime) / 1000;
	 int minutes = seconds / 60;
	 int hours = minutes/60;
	 seconds-=minutes * 60;
	 minutes-=hours * 60;
	 fill(0,0,0);
	
	 text((minutes) + ":" + (seconds),100,100);
	
	 
	 
     
     } 

You might find nf() helpful for formatting the numbers

Wow. That's exactly what I need. Thank you for your pacience and responses.

ok I'm slowly moving along here.
Like I've said, I figured out the nf().  Now I have the pause button working, but when it's "unpaused" it starts as if it never stopped.
Also when the "reset" button is hit, it does the same thing as if I hit the "pause" button.

What I really want, is the clock to start a 00:00 until  a "start" button his hit.
Then, I would like to hit the "stop" button, but without the option to continue, rather just freeze the time.
And finally a "reset" button to bring it all back to 00:00.

Code:

 int startingTime;
float TextFont;
boolean bOver = false;
boolean locked = false;
boolean paused = false;
boolean cOver = false;


void setup() {
	 size(400, 400);
	 PFont font= loadFont("Verdana-12.vlw");
	 textFont(font);
	 
	startingTime = millis(); 
     }
		  
     void draw() {
	background(255,255,255);
	 
	 int seconds = (millis() - startingTime) / 1000;
	 int minutes = seconds / 60;
	 int hours = minutes/60;
	 seconds-=minutes * 60;
	 minutes-=hours * 60;
	 String sm = nf(minutes, 2); //minutes
	 String s2 = nf(seconds, 2); //seconds
	 fill(255);
	 stroke(0);
	 rect(150,95,100,50);
	 fill(0,0,0);
	 text(( sm) + ":" + (s2),185,125);
	 fill(255);
	
	// Test if the cursor is over the box 
  if (mouseX > 150 && mouseX < 250 && 
	mouseY > 150 && mouseY < 200) {
    bOver = true;  
    if(!locked) { 
     
     

	} 
  } else {
    
    bOver = false;
    
  }
  if (mouseX > 150 && mouseX < 250 &&
	mouseY > 205 && mouseY < 265){
    cOver = true;
    if(!locked){
    }
	} else {
   
   cOver = false;
   
	}
  
  // Draw the box
  rect(150, 150, 100, 50);
  fill(0);
 text("Reset",184,180);
 
 fill(255);
 rect(150, 205, 100, 50);
 fill(0);
 text("Pause",184, 235);
 
}

void mousePressed() {
  if(bOver) { 
    locked = true;	   
    startingTime = millis();
    
  } else {
    locked = false;
    
    
  }
  if(cOver) {  
   paused = !paused;
   if(paused)
     noLoop();
   else
     loop();
     
   
  }
  }