problem with stopWatch in android

Question

in my app i have placed a stop watch with two buttons. The stop watch works in a proper way. But the problem is at start the timer looks as 0:0:0, when it starts counting the single digits are been changed over to double digits as 0:12:53.

this affects and disturbs the other layers too. At the start itself i want it to be displayed as 00:00:00 by default, so that i cant make changes in the layout.

but i don't know where to give the value for this. Following is my code

  b1.setOnClickListener(new View.OnClickListener() 
        {
            public void onClick(View view) 
            {
                if(b1.getText().toString().equals("Start"))
                {
                        if(currentThread.getState()==Thread.State.NEW)
                        {
                            currentThread.start();
                            shouldRun = true;
                            b1.setText("Stop");
                        }
                        else
                        {
                          shouldRun = false;
                          b1.setText("Stop");
                        }
                }
                else if(b1.getText().toString().equals("Stop"))
                {
                    time=0;
                    time1=0;
                    time2=0;
                }
            }
        });     
        b2.setOnClickListener(new View.OnClickListener() 
        {
            public void onClick(View view) 
            {
                if(b2.getText().toString().equals("Pause"))
                {
                    shouldRun = false;
                    b2.setText("Resume");
                }
                else if(b2.getText().toString().equals("Resume"))
                {
                    shouldRun = true;
                    b2.setText("Pause");
                }
            }
        });               
    }
    @Override
    public void run()
    {
        try 
        {
         while(true)
         {  
            while(shouldRun)
            {
                Thread.sleep(1000);
                Log.e("run", "run");
                threadHandler.sendEmptyMessage(0);
            }
         }   
        } 
        catch (InterruptedException e) {}
    }


    private Handler threadHandler = new Handler() 
    {
        public void handleMessage(android.os.Message msg) 
        {
            sec=time2++;
            if(sec == 59)
            {
                time2=0;
                sec = time2++;
                min=time1++;
            }
            if(min == 59)
            {
                time1=0;
                min = time1++;
                hr=time3++;
            }             
            stopWatch.setText(""+hr+":"+min+":"+sec);
        }
    };

}

how to do this please help me............

Answer 1

This should do the work:

String time = String.format("%02d:%02d:%02d", hr, min, sec);
stopWatch.setText(time);

Or the one-line-version:

stopWatch.setText(String.format("%02d:%02d:%02d", hr, min, sec));