Ohps..in dem Fall hast du natürlich recht 
Aber bei meinen Listener übergebe ich eigentlich alles im Konstruktor. Vielleicht der Vollständigkeit halber nochmal die Klasse GUI:
[code=Java]import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.WindowConstants;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Toolkit;
import java.awt.Dimension;
import java.util.ArrayList;
import java.util.List;
/**
*
* @author florian
*
* class which creates the frame with all buttons, textfields and panels
*
*/
public class GUI{
static final int Hgap = 30;
static final int textFieldSize = 30;
final Dimension frameDim;
final JFrame frame;
private static BoxPanel boxPanel;
private static GridPanel gridPanel;
private static BoxListener boxListener;
private static GridListener gridListener;
private Container contentContainer;
private JTextField textField;
private JButton checkButton;
private JButton exitButton;
private JRadioButton four;
private JRadioButton eight;
private JRadioButton sixteen;
private JRadioButton twenty4;
private JRadioButton thirty2;
private JRadioButton fourty8;
public GUI(){
Dimension dim = new Dimension(Toolkit.getDefaultToolkit().getScreenSize());
dim.setSize(dim.getWidth(), dim.getHeight() - 75);
frameDim = dim;
this.frame = new JFrame();
}
public static void main(String [] args){
GUI gui = new GUI();
GUI.boxPanel = new BoxPanel(gui);
GUI.gridPanel = new GridPanel(gui);
boxListener = new BoxListener(gui);
gridListener = new GridListener(gui);
gui.initializeGridPanel(gridPanel);
gui.initializeBoxPanel(GUI.boxPanel);
gui.createInputPanel();
gui.paintFrame(GUI.boxPanel,GUI.gridPanel);
}
/*
* method to set the three inital starBoxes
*/
private void initializeGridPanel(GridPanel gridPanel){
gridPanel.setStarBox(gridPanel.getFourBitWidth()/2, gridPanel.getStandardHeight(), 45, 140);
gridPanel.setStarBox(gridPanel.getFourBitWidth()/2, gridPanel.getStandardHeight(), 45, 140+gridPanel.getStandardHeight()*2+10);
gridPanel.setStarBox(gridPanel.getFourBitWidth()/2, gridPanel.getStandardHeight(), 45, 140+gridPanel.getStandardHeight()+5);
gridPanel.addMouseListener(gridListener);
}
/*
* method to set the size of the BoxPanel and to fill it
*/
private void initializeBoxPanel(BoxPanel boxPanel){
boxPanel.setPreferredSize(new Dimension((int)frameDim.getWidth(), (int)frameDim.getHeight()/8));
boxPanel.fillBoxPanel();
boxPanel.addMouseListener(boxListener);
}
/*
* method to fill the contentContainer and initialize all buttons
*/
private void createInputPanel(){
FlowLayout flow = new FlowLayout();
flow.setAlignment(FlowLayout.CENTER);
flow.setHgap(GUI.Hgap);
this.contentContainer = new Container(); // contains all buttons and the textfield
this.contentContainer.setLayout(flow);
this.textField = new JTextField();
this.textField.setColumns(textFieldSize);
this.textField.setText("INPUT");
this.textField.setEditable(false);
// initialize the checkButton
this.checkButton = new JButton("CHECK");
this.checkButton.setEnabled(false);
this.checkButton.setName("check");
// initialize the exitButton
this.exitButton = new JButton("EXIT");
this.exitButton.setEnabled(true);
this.exitButton.setName("exit");
// adding the ActionListener and KeyListener to each button
this.exitButton.addActionListener(new ExitListener());
this.exitButton.addKeyListener(new MyExitKeyListener());
this.checkButton.addActionListener(new CheckListener());
this.checkButton.addKeyListener(new MyCheckKeyListener());
// initialize the radioButtons
this.four = new JRadioButton("4");
this.eight = new JRadioButton("8");
this.sixteen = new JRadioButton("16");
this.twenty4 = new JRadioButton("24");
this.thirty2 = new JRadioButton("32");
this.fourty8 = new JRadioButton("48");
ButtonGroup radioGroup = new ButtonGroup();
radioGroup.add(four);
radioGroup.add(eight);
radioGroup.add(sixteen);
radioGroup.add(twenty4);
radioGroup.add(thirty2);
radioGroup.add(fourty8);
this.four.setEnabled(false);
this.eight.setEnabled(false);
this.sixteen.setEnabled(false);
this.twenty4.setEnabled(false);
this.thirty2.setEnabled(false);
this.fourty8.setEnabled(false);
// fill the contentContainer
contentContainer.add(textField);
contentContainer.add(four);
contentContainer.add(eight);
contentContainer.add(sixteen);
contentContainer.add(twenty4);
contentContainer.add(thirty2);
contentContainer.add(fourty8);
contentContainer.add(checkButton);
contentContainer.add(exitButton);
// contentContainer.setSize(new Dimension((int) frameDim.getWidth(), (int) frameDim.getHeight()/10));
}
/**
* method to paint the frame
*/
private void paintFrame(BoxPanel boxPanel, JPanel gridPanel){
BorderLayout border = new BorderLayout();
JScrollPane scrollbar = new JScrollPane(gridPanel);
scrollbar.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
frame.setLayout(border);
frame.add(boxPanel, BorderLayout.NORTH);
frame.add(scrollbar, BorderLayout.CENTER);
frame.add(contentContainer, BorderLayout.SOUTH);
frame.setTitle("Echo Request Puzzle");
frame.setSize(frameDim);
frame.setVisible(true);
frame.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
frame.addWindowListener(new MyWindowListener());
}
public Color getFrameColor(){
return frame.getContentPane().getBackground();
}
public List<JRadioButton> getRadioButtons(){
ArrayList<JRadioButton> list = new ArrayList<JRadioButton>();
list.add(four);
list.add(eight);
list.add(sixteen);
list.add(twenty4);
list.add(thirty2);
list.add(fourty8);
return list;
}
public List<JButton> getButtons(){
ArrayList<JButton> list = new ArrayList<JButton>();
list.add(checkButton);
list.add(exitButton);
return list;
}
public BoxPanel getBoxPanel(){
return GUI.boxPanel;
}
public GridPanel getGridPanel(){
return GUI.gridPanel;
}
public JTextField getInputField(){
return this.textField;
}
public BoxListener getBoxListener(){
return GUI.boxListener;
}
public GridListener getGridListener(){
return GUI.gridListener;
}
}[/code]
In dieser Klasse wird das Fenster erstellt. Jeder Listener bekommt im Konstruktor dann das gleiche GUI Element übergeben.
Um eine Komponente neu zu zeichnen, muss ich doch [code]repaint()[/code] auf die Komponente aufrufen, oder?
EDIT: Besonders wichtig sind hier vielleicht die Zeilen 63 bis 78 (die main)
noch ein EDIT:
Also nach klicken auf einer Box, ergibt sogar die Abfrage [code]getForeground().equals(Color.YELLOW)[/code] in der Klasse BoxListener (Zeile 57) true...
Also wird das wirklich alles übernommen, nur nicht gezeichnet, oder irre ich mich?
