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Thread: Graphics in Jpanel are not showing! Help please ! T^T

  1. #1
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    Exclamation Graphics in Jpanel are not showing! Help please ! T^T

    Okay. So I am trying to program a game where you can decorate your own cake. When you click on the buttons their suppose to draw graphics on the top panel. But when I click on the button nothing shows up. I tried everything i could. Please help if you can, Thanks !

    P.S. I am so sorry if i posted in the wrong forum, this is my first post.

       import javax.swing.*;
       import java.awt.*;
       import java.awt.Color;
       import java.awt.event.*;
       import java.awt.Graphics;
       import java.awt.Graphics2D;
       import javax.swing.JComponent;
       import java.awt.event.ActionListener.*;
       import java.awt.event.ActionListener;
       import java.awt.event.MouseAdapter;
       import java.awt.event.MouseEvent;
     
     
       public class CakeMakerFINAL extends JPanel
     
       {
       //Colours
          public static final Color LIGHTBLUE = new Color (0xAD, 0xD8, 0xE6);
          JFrame window;
          JPanel panel = new JPanel(new GridBagLayout());
          JPanel panel1 = new JPanel(new GridBagLayout());
     
          boolean angelcake = false;
          boolean mocha = false;
          boolean vanilla = false;
          boolean choco = false;
          boolean berry = false;
          boolean fruits = false;
          boolean cream = false;
          boolean birthday = false;
     
     
          @Override public void paintComponent(Graphics g)
          {
             super.paintComponent(g);
             g.setColor(Color.RED);
             g.drawRect (200,220,50,20);
             repaint();
          }
     
          //methods to paint on graphics, (The buttons action)     
          public void myPaint(Graphics g)
          {
             if (angelcake)
             {
                g.setColor(Color.RED);
                g.drawRect (30,30,50,20);
                repaint();
             }
     
             if (mocha)
             {
                g.drawOval(10,10, 100, 100);
             }
     
             if (vanilla)
             {
     
             } 
             if (choco)
             {
                g.drawOval(10,10, 100, 100);
             }
     
             if (berry)
             {
     
             }
             if (fruits)
             {
                g.drawOval(10,10, 100, 100);
             }
     
             if (cream)
             {
     
             }
             if (birthday)
             {
                g.drawOval(10,10, 100, 100);
             }     
          }
     
          public CakeMakerFINAL()
          {
          //Frame and panel components
             JFrame frame = new JFrame("Cake Maker Game");
             frame.setVisible(true);
             frame.setSize(600,700);
             frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
             frame.getContentPane().add(panel, BorderLayout.SOUTH);
             frame.getContentPane().add(panel1, BorderLayout.NORTH);
             panel.setBackground(LIGHTBLUE);     	      
     
          //Positions buttons in JPanel
             GridBagConstraints c = new GridBagConstraints();
             //Labels
             JLabel label1 = new JLabel("Type of Cake");
             c.gridx = 0;
             c.gridy = 0;
             c.insets = new Insets(20,20,20,20);
             panel.add(label1, c);
             JLabel label2 = new JLabel("Icing");
             c.gridx = 1;
             c.gridy = 0;
             panel.add(label2, c);
             JLabel label3 = new JLabel("Decorations");
             c.gridx = 2;
             c.gridy = 0;
             panel.add(label3, c);
     
            //BUTTONS for selection 	
             //Cake Choices
             JButton angelcake = new JButton("AngelCake");
             c.gridx = 0;
             c.gridy = 1;
             panel.add(angelcake, c);
             angelcake.addActionListener(new Action());
     
             JButton mocha = new JButton("Mocha");
             c.gridx = 0;
             c.gridy = 2;
             panel.add(mocha, c);
             mocha.addActionListener(new Action());
             // Icing Choices
             JButton vanilla = new JButton("Vanilla");
             c.gridx = 1;
             c.gridy = 1;
             panel.add(vanilla, c);
             vanilla.addActionListener(new Action());
     
             JButton choco = new JButton("Choco");
             c.gridx = 1;
             c.gridy = 2;
             panel.add(choco, c);
             choco.addActionListener(new Action());
     
             JButton berry = new JButton("Strawberry");
             c.gridx = 1;
             c.gridy = 3;
             panel.add(berry, c);
             berry.addActionListener(new Action());
     
             // Decoration Choices
             JButton fruits = new JButton("Fruits");
             c.gridx = 2;
             c.gridy = 1;
             panel.add(fruits, c);
             fruits.addActionListener(new Action());
     
             JButton cream = new JButton("Whip Cream");
             c.gridx = 2;
             c.gridy = 2;
             panel.add(cream, c);
             cream.addActionListener(new Action());
     
             JButton birthday = new JButton("Birthday!~");
             c.gridx = 2;
             c.gridy = 3;
             panel.add(birthday, c);
             birthday.addActionListener(new Action());
     
          }  
       //Button Action, Draws graphic. 	
          public class Action implements ActionListener
          {
             public void actionPerformed (ActionEvent e)
             {
                if(e.getSource() == angelcake)
                {
                   angelcake = true;
                }
     
                else if (e.getSource() == mocha)
                {
                   mocha = true;
                }
     
                else if (e.getSource() == vanilla)
                {
                   vanilla = true;
                }
                else if (e.getSource() == choco)
                {
                   choco = true;
                }
                else if (e.getSource() == berry)
                {
                   berry = true;
                }
                else if (e.getSource() == fruits)
                {
                   fruits = true;
                }
                else if (e.getSource() == cream)
                {
                   cream = true;
                }
                else if (e.getSource() == birthday)
                {
                   birthday  = true;
                }
             }
          }	
          public static void main(String[] args)
          {
             CakeMakerFINAL cakemakerFinal = new CakeMakerFINAL();
          }
     
       }


  2. #2
    Super Moderator pbrockway2's Avatar
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    Default Re: Graphics in Jpanel are not showing! Help please ! T^T

    As a general rule: work one small step at a time.

    So step back from your cake application as it currently stands and write something with a single button that makes a single change to the GUI. Then, when you have something that does what you want, apply it as a "pattern".

    Quite likely the problem lies in the fact that your action handler doesn't cause a repaint.

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