Thread: display text for 1 sec than remove txt java

i have two animation going on screen.
one animation is a rect going to right. i dont want this animation to stop
2nd animation is message coming on screen for 1 sec and removeing it.

right now 1st animation works fine but doesnt diplay. its be iam seting message="". but how can i display for 1 sec.

public class ...
...
int x = 0;
int y = 0;
int dx = 1;
String message = "hellow world";
...
 
public void start()
    {
        ...
        if(timer_class == null)
        {
            Timer timer_class = new Timer(10, this); 
        }
        else
        {
            timer_class.stop();
        }
        timer_class.start();                 
    }
 
 
 
public void actionPerformed(ActionEvent e)
    {
       x+=dx; //make 1st animation
 
            message = "";
 
        repaint();
    }
 
 
    public void paint(Graphics g)
    {
          g.drawRect(x,y,10,10);   //i dont want this animation to stop
 
              if(!message.equal(""))  //this should only come on screen for 1sec
                {
        g.drawString(message, 600, 200);
        }
    }   
}

1)Use a Timer. --check
2)Show message --check
3)Start timer for desired time --(not sure but i think its this)

Timer timer_class = new Timer(10, this);

4)when timer calls its listener, clear message
can you plz explain this part lil more to me. right now i am clear message in actionperformed function.

o but isnt only way to display message on screen is by "g.drawString();" in paint method

so i should drawstring() in paint method and after 1 sec change color same as background?

so what you are saying is that i shouldnt draw string in paint method. bc onces you draw in paint() than you cant undo.

and i should use JLabel? and draw in init() function?

ok let me try again:
to display drawstring on screen for 1 sec than clearing it. i should do this: right?

1)Use a Timer.
2)Show message
3)Start timer for desired time
4)when timer calls its listener, clear message

1 - i am using timer so check
2 - i am drawing in paint() g.drawstring so check
3 - i think this is Timer timer_class = new Timer(10, this);
4 - this step i am not sure

let me know which step iam wrong.

but i told you the problem why would you need to see it?

the problem is that i cant clear string after 1 sec. right now if i run this code. 1st animation works fine but 2nd animation i can print string on screen but i dont know how to clear it after 1 sec. as said in title and thread.

than u said i need to:

1)Use a Timer.
2)Show message
3)Start timer for desired time
4)when timer calls its listener, clear message

than i said:

1 - i am using timer so check
2 - i am drawing in paint() g.drawstring so check
3 - i think this is Timer timer_class = new Timer(10, this);
4 - this step i am not sure
let me know which step iam wrong.

and now you are saying that you dont understand the problem? but than why would tell me something if you dont understand the problem?

iam sure you are trying to help but this is wild goose chase.

ok. all i need help wth is to make string clear after 1 sec and no change to 1st rect animation.

import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Timer;
import javax.swing.JApplet;
 
public class main extends JApplet implements ActionListener
{
int x = 30;
int y = 30;
int dx = 1;
String message = "hellow world";
 
Timer timer_class;
 
 
public void init()
{
	setSize(900, 500);
}
 
 
public void start()
    {
 
        if(timer_class == null)
        {
             timer_class = new Timer(30, this); 
        }
        else
        {
            timer_class.stop();
        }
        timer_class.start();                 
    }
 
 
 
public void actionPerformed(ActionEvent e)
    {
       x+=dx; //make 1st animation
 
 
 
        repaint();
    }
 
 
    public void paint(Graphics g)
    {
    	super.paint(g);
          g.drawRect(x,y,10,10);   //i dont want this animation to stop
 
          g.drawString(message, 600, 200);    //this should only come on screen for 1sec
 
    }   
}

ok. all i need help wth is to make string clear after 1 sec and no change to 1st rect animation.

import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Timer;
import javax.swing.JApplet;
 
public class main extends JApplet implements ActionListener
{
int x = 30;
int y = 30;
int dx = 1;
String message = "hellow world";
 
Timer timer_class;   //for 1st animation
Timer timer_class2;  //for 2nd animation
 
public void init()
{
	setSize(900, 500);
}
 
 
public void start()
    {
	timer_class2 = new Timer(50, this);
 
        if(timer_class == null)
        {
             timer_class = new Timer(30, this); 
        }
        else
        {
            timer_class.stop();
        }
        timer_class.start();                 
    }
 
 
 
public void actionPerformed(ActionEvent e)
    {
       x+=dx; //make 1st animation
 
 
 
        repaint();
    }
 
 
    public void paint(Graphics g)
    {
    	super.paint(g);
          g.drawRect(x,y,10,10);   //i dont want this animation to stop
 
 
         timer_class2.start();
            	  g.drawString(message, 600, 200);
            	  //i dont know how to clear this
            	  timer_class2.stop(); 	  
    }   
}

i am thinking of making two timer. one for each. that way one animation will slow down 30 and other 50.

also i dont know how to clear this string

i think iam started to get it now.

i had a question on:

except its listener will tell the paint() method NOT to draw() the String by setting a variable that the paint() method can test to see if the String should be drawn.

i am having some difficult seeing how to clear it. les say if i doing testing in paint method and i draw it for 1 sec. but that will still stay there. only way i see to clear string is by change the color same as bg color.

or i can do this in paint method:

if(!message.equal(""))
{
g.drawString(message, 600, 200);
}

and to clear i can do message = "" ?

i can test if timer is running if its running than print message and stop timer. if timer is stop than print "" string?

 if(timer_class2.isRunning() == true) 
            {
            	 g.drawString(message, 600, 200);
            	 timer_class2.stop();
            }
          if (timer_class2.isRunning() == false)
          {
                 message="";
        	  g.drawString(message,600, 200);
          }

ah i c so in paint method i can do something like this to test:

if(showMsg == true)
{
g.drawString(message, 600, 200);
}
else
g.drawString("", 600, 200);
}

2nd part is to change showMeg to false after 1 sec. right?
i tried puting (showMeg = false) in actionPerformed, paint method in if statment, in start method after timer_class2.start(). but it just print in else statment

i c. how about the 2nd part?