Call paint method from another class using actionevent

[chidurihan]

Hello!
i just want to ask how to call paint() method from another class to draw different shapes when a certain button is clicked in the same frame.

class Shapes extends JFrame implements ActionListener
//components
Jpanel pane=new JPanel();

public Shapes(){
pane.setLayout(null);
//add components
setContentPane(pane);
}
public static void main(String[]args){
new Shapes
......
}

public actionPerforemd(ActionEvent e){
if(e.getSource==btnRect){
drawRect oRect=new drawRect();
oRect.repaint() //is this correct ?????
}
}
}
class drawRect extends JPanel{
public void paint(Graphics g){
g.drawRect(10,50,50,50);
}
}

any help will be appreciated. tnx

[DarrylBurke]

Use code tags to post codes -- [code]CODE[/code] will display as

CODE

oRect.repaint() //is this correct ?????

Does it do what you want it to do?

Any amount of repainting won't make a difference since your paintComponent(...) override is hardcoded to draw a rectangle at [10, 50, 50, 50] and nothing else.

db

[chidurihan]

oRect.repaint()

no output is being displayed in the frame when i call repaint()

g.drawRect(10,50,50,50);

I just tried to put a constant value for the drawRect() for me to determine if the object will display when button is clicked. But still no shapes is being displayed.

[DarrylBurke]

1. Did you ever attempt to add the panel to the frame?
2. Why is a new panel constructed in the ActionListener's actionPerformed?

I guess you need to start here:
Trail: Creating a GUI With JFC/Swing (The Java™ Tutorials)

Other recommended reading:
SSCCE : Java Glossary

db