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  1. #1
    clydedoris is offline Member
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    Unhappy how to add 2 panels in a panel inside a frame

    i have to make a jframe which contains a jpanel "try" which would contain some components, and 2 jpanels, "green" and "blue". here is my code

    Java Code:
    import java.awt.*;
    import javax.swing.*;
    
    public class Try extends JPanel
    {
        GreenPanel green = new GreenPanel();
        BluePanel blue = new BluePanel();
        
        public Try()
        {
            setLayout(null);
            green.setBounds(10, 10, 250, 200);
            blue.setBounds(10, 280, 250, 200);
            
            add(green);
            add(blue);
        }
        
        /*public void paint(Graphics g)
        {
            g.setColor(Color.yellow);
            g.fillRect(getX(), getY(), getWidth(), getHeight());
        }*/
        
        public static void main(String args[])
        {
            Try t = new Try();
            JFrame j = new JFrame();
            j.setSize(300, 700);
            j.setVisible(true);
            j.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            j.getContentPane().add(t);
        }
    }
    
    
    class GreenPanel extends JPanel
    {
        @Override
        public void paintComponents(Graphics i)
        {
            i.setColor(Color.green);
            i.fillRect(0, 0, getWidth(), getHeight());
        }
    }
    
    class BluePanel extends JPanel
    {
        @Override
        public void paintComponents(Graphics s)
        {
            s.setColor(Color.blue);
            s.fillRect(0, 0, getWidth(), getHeight());
        }
    }
    the problem is, i can't see the 2 jpanels!!huhu
    [why are you annoyed with my sig?]

  2. #2
    doWhile is offline Moderator
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    Default

    Try adding the component to the content pane prior to making the JFrame visible, or otherwise call validate on the JFrame or revalidate on the JPanel

  3. #3
    camickr is offline Senior Member
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    You should NOT be overriding the paintComponents() method. To change the background color of a panel you just use:

    Java Code:
    panel.setBackground( Color.GREEN );
    Generally it is NOT a good idea to use a null layout. Give you panels a "preferred size" and then add then to a panel that uses a layout manager.

  4. #4
    clydedoris is offline Member
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    Default

    okay, gotta try these later..thanks BTW
    [why are you annoyed with my sig?]

  5. #5
    clydedoris is offline Member
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    Quote Originally Posted by camickr View Post
    You should NOT be overriding the paintComponents() method. To change the background color of a panel you just use:

    Java Code:
    panel.setBackground( Color.GREEN );
    Generally it is NOT a good idea to use a null layout. Give you panels a "preferred size" and then add then to a panel that uses a layout manager.
    nice one..my problem is solved..whoa thanks!!!! +10000 rep!!!1lol
    [why are you annoyed with my sig?]

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