public class Demo extends JFrame{
JComboBox comboBox;
JLabel text;
public Demo(){
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
text = new JLabel("Wert: ");
comboBox = new JComboBox(new String[]{"Frankreich","Deutschland","Italien","Griechenland"});
comboBox.addMouseListener(new MouseListener(){
public void mouseClicked(MouseEvent e){}
public void mouseReleased(MouseEvent e){}
public void mousePressed(MouseEvent e){}
public void mouseExited(MouseEvent e){}
public void mouseEntered(MouseEvent e){
text.setText("Wert: "+(String)comboBox.getSelectedItem());
}
});
this.add(comboBox,BorderLayout.CENTER);
this.add(text,BorderLayout.NORTH);
this.pack();
this.setSize(200, 100);
this.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable(){
public void run(){
new Demo();
}
});
}
}