import java.applet.*;
  import java.awt.*;
  import java.awt.event.*;
  public class CheckMouse extends Applet implements MouseListener {
    Button But1;
    Checkbox Check1, Check2;
    CheckboxGroup CheckGroup12;
    public void init() {
      setLayout(null); // Standardlayout deaktivieren für pixelgenaues Design
      But1 = new Button("Knopf 1");
      But1.addMouseListener(this);
      CheckGroup12 = new CheckboxGroup();
      Check1 = new Checkbox("Check1", CheckGroup12, true);
      Check2 = new Checkbox("Check2", CheckGroup12, false);
      Check1.setBounds(10,10,70,40);
      Check2.setBounds(10,40,70,40);
      But1.setBounds(10,200,100,40);
      add(But1);
      add(Check1);
      add(Check2);
    }
    public void mouseReleased(MouseEvent ev) {
      Checkbox Active = CheckGroup12.getSelectedCheckbox();
      But1.setLabel(Active.getLabel());
    }
    public void mousePressed(MouseEvent ev) { }
    public void mouseEntered(MouseEvent ev) { }
    public void mouseExited(MouseEvent ev)  { }
    public void mouseClicked(MouseEvent ev) { }
  }