【初心者】Java質問・相談スレ１０【大歓迎】

>>167
違う。

public interface SomeInterface {
  public void operation();
}

public class JText2 extends JText implements SomeInterface {
  private SomeInterface si;
  public JText2(SomeInterface si){ this.si = si; }
  public void operation(){ si.operation(); }
}

public class JComboBox2 extends JComboBox implements SomeInterface {
  private SomeInterface si;
  public JComboBox2(SomeInterface si){ this.si = si; }
  public void operation(){ si.operation(); }
}