one last try

[Pranav Sharma]

ok i will give it one last try.. and rephrase the question.
i have a set of lines on a jframe frame. now once iam in main after show(), i want to redraw these lines with new cordinates. how do i do this.
thank u
and sorry for the trouble

[Ernest Friedman-Hill]

Do it the same way you drew them the first time, but with new coordinates?
Sorry, I know that's not helpful, but this isn't a very clear question. Apparently you've asked it before and not gotten an answer (by the way, if you had posted this as a follow-up to your earlier question, then I'd be able to read all the different versions together, and maybe all together, they'd make sense. But this one by itself, I can't really understand.)
Maybe if you showed us some code, in a reply on this same thread, then your question would make more sense. Also, please use the UBB "CODE" tags to format your code -- otherwise, we won't be able to read it.

[Pranav Sharma]

thank u ernest.
iam a beginner at this. I understand that i will have to redraw with the new cordinates.
the problem is i dunno how exactly to do that.
my code is simple the paint method contains calls to draw lines and oval shapes.
and then in
public static void main(){
(code)
.
.
.
obj.show()
}
this creates the frame and then the figures in them.
now after show if i have to redraw the shapes what and where to do i add the code to repaint.
hope this is clears it up a lil bit
thank u

[Pranav Sharma]

  import java.awt.* ;
import javax.swing.* ;
public class My extends JFrame
{
int x=200, y = 200;
private Font theFont = new Font("SansSerif", /*name of font*/
Font.BOLD + Font.ITALIC, /*style of font*/
24) ; /*size of font*/
// method to initialise fonts and
// colours to be used by this application

private void setupFont(Graphics g)
{
   g.setFont(theFont) ;
   g.setColor(Color.blue) ;
}
public void paint(Graphics g)
{
    super.paint( g) ;
    setupFont(g) ;
    g.drawString("Welcome", 300,300) ;
    g.setColor(Color.black) ;
    g.drawOval(100,50,9,5) ;
    g.drawOval(100,100,9,5) ;
    g.fillOval(x,y,9,5) ;
}
public static void main(String[ ] args)
{
    My f = new My( ) ;
    f.setSize(300,300) ;
    f.setTitle("WelcomeGUI") ;
    f.setDefaultCloseOperation(EXIT_ON_CLOSE) ;
    f.show( ) ;
    for(long i = 0; i<= 90000000; i++);
    System.out.println("hello");
}

}

this is the code i have, now i want to redraw the lines and oval points with new cordinates. what piece of code would i have to add for this and where would i have to add.
thank u

[Ernest Friedman-Hill]

Ah, OK. Well, there are several ways you could do this, but here's one simple suggestion: replace your paint() method with this:

private int paintMode = 0;
public void paint(Graphics g)
{
    super.paint( g) ;
    switch (paintMode) {
      case 0:
      paintWelcome(g); break;
      default:
      paintOther(g); break;
    }
}
private void paintWelcome(Graphics g)
{
    setupFont(g) ;
    g.drawString("Welcome", 300,300) ;
    g.setColor(Color.black) ;
    g.drawOval(100,50,9,5) ;
    g.drawOval(100,100,9,5) ;
    g.fillOval(x,y,9,5) ;
}
private void paintOther(Graphics g)
{
  // Do your other painting here
}

And in main(), when you want the picture to change, set paintMode to some non-zero value and then call f.repaint().
OK?

[Pranav Sharma]

works like a charm
thank u
any books you can recommend on java

[Ernest Friedman-Hill]

Have a look around the Bunkhouse.