import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;

import javax.swing.text.html.*;
import java.io.*;
import java.net.*;

public class Facade_Bsp2_Kubik extends JFrame implements ActionListener {

  
  public Facade_Bsp2_Kubik() {
    setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
    setGUI();
    setVisible(true);
  }

  private JButton createButton(String caption, String command) {
     JButton bn = new JButton(caption);
     bn.setFont( new Font("Arial", Font.BOLD,18)  );
     bn.setActionCommand(command);
     bn.addActionListener(this);
     return bn;
  }

  private void setGUI() {
    setSize(600, 630);
    setLocation(20,20);
    setTitle("Test Adapter");

    JPanel pnButton = new JPanel();
    pnButton.setLayout( new FlowLayout() );
    pnButton.add( createButton("Test1","Test1") );
    pnButton.add( createButton("Test2","Test2") );

    pnButton.add( createButton("Abbruch","Abbruch") );

    this.getContentPane().setLayout( new BorderLayout() );
    JTextArea editor = Editor.getInstance();
    this.getContentPane().add( new JScrollPane(editor), BorderLayout.CENTER);

    this.getContentPane().add( pnButton, BorderLayout.SOUTH );

  } // setGUI

    public void actionPerformed(ActionEvent e) {
       String cmd = e.getActionCommand();
       if (cmd.equals("Test1") ) {
           test1();
       }     
       if (cmd.equals("Test2") ) {
           test2();
       }     
       if (cmd.equals("Abbruch") ) {
          setVisible(false);
          dispose();  // System.exit(0);
       }     
    }

    private void  test1() {
       JTextArea editor = Editor.getInstance();
      editor.setText("Ergebnisse:");
      // hier fehlt Code
    }

    private void  test2() {
      // hier fehlt Code
    }

  public static void main(String[] args) {
    new Bsp2_Kubik();
 }

}  // Facade_Bsp2_Kubik


class Editor {
    static private JTextArea editor = new MyJTextArea();

     // wird nicht automatisch aufgerufen
    private Editor() {
      editor.setFont( new Font("Arial", Font.BOLD,28)  );
      System.out.println("editor");
    }

   public static JTextArea getInstance() {
     return editor;
   }
}


class MyJTextArea extends JTextArea{

    public MyJTextArea() {
      setFont( new Font("Arial", Font.BOLD,28)  );
    }
}

class Class1 {

	public int doSomethingComplicated(int x) {
		return x * x * x;
	}

}




class Class2 {

	public int doAnotherThing(Class1 class1, int x) {
		return 2 * class1.doSomethingComplicated(x);
	}
}



class Class3 {

	public int doMoreStuff(Class1 class1, Class2 class2, int x) {
		return class1.doSomethingComplicated(x) * class2.doAnotherThing(class1, x);
	}

}




class Facade {

	public int cubeX(int x) {
		return 0l;
	}

	public int cubeXTimes2(int x) {
		return 0;
	}

	public int xToSixthPowerTimes2(int x) {
		return 0;
	}

}