Ventile

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
 
 
public class Ventile extends JFrame {
  // Anfang Attribute
  private JTextField jTextField1 = new JTextField();
  private JLabel jLabel1 = new JLabel();
  private JButton jButton2 = new JButton();
  private JButton jButton3 = new JButton();
  private JButton jButton4 = new JButton();
  private JButton jButton5 = new JButton();
  private JButton jButton6 = new JButton();
  private JButton jButton1 = new JButton();
  // Ende Attribute
 
  public Ventile() { 
    // Frame-Initialisierung
    super();
    setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
    int frameWidth = 300; 
    int frameHeight = 300;
    setSize(frameWidth, frameHeight);
    Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
    int x = (d.width - getSize().width) / 2;
    int y = (d.height - getSize().height) / 2;
    setLocation(x, y);
    setTitle("Ventile");
    setResizable(false);
    Container cp = getContentPane();
    cp.setLayout(null);
    // Anfang Komponenten
 
    jTextField1.setBounds(0, 216, 294, 28);
    cp.add(jTextField1);
    jLabel1.setBounds(16, 16, 94, 20);
    jLabel1.setText("gedrückt =offen");
    cp.add(jLabel1);
 
    jButton2.setBounds(8, 56, 75, 25);
    jButton2.setText("Ventil 1");
    jButton2.setMargin(new Insets(2, 2, 2, 2));
    jButton2.addActionListener(new ActionListener() { 
      public void actionPerformed(ActionEvent evt) { 
        jButton2_ActionPerformed(evt);
      }
    });
    cp.add(jButton2);
    jButton3.setBounds(8, 120, 75, 25);
    jButton3.setText("Ventil 2");
    jButton3.setMargin(new Insets(2, 2, 2, 2));
    jButton3.addActionListener(new ActionListener() { 
      public void actionPerformed(ActionEvent evt) { 
        jButton3_ActionPerformed(evt);
      }
    });
    cp.add(jButton3);
    jButton4.setBounds(88, 96, 75, 25);
    jButton4.setText("Ventil 3");
    jButton4.setMargin(new Insets(2, 2, 2, 2));
    jButton4.addActionListener(new ActionListener() { 
      public void actionPerformed(ActionEvent evt) { 
        jButton4_ActionPerformed(evt);
      }
    });
    cp.add(jButton4);
    jButton5.setBounds(168, 72, 75, 25);
    jButton5.setText("Ventil 4");
    jButton5.setMargin(new Insets(2, 2, 2, 2));
    jButton5.addActionListener(new ActionListener() { 
      public void actionPerformed(ActionEvent evt) { 
        jButton5_ActionPerformed(evt);
      }
    });
    cp.add(jButton5);
    jButton6.setBounds(168, 128, 75, 25);
    jButton6.setText("Ventil 5");
    jButton6.setMargin(new Insets(2, 2, 2, 2));
    jButton6.addActionListener(new ActionListener() { 
      public void actionPerformed(ActionEvent evt) { 
        jButton6_ActionPerformed(evt);
      }
    });
    cp.add(jButton6);
    jButton1.setBounds(96, 176, 75, 25);
    jButton1.setText("jButton1");
    jButton1.setMargin(new Insets(2, 2, 2, 2));
    jButton1.addActionListener(new ActionListener() { 
      public void actionPerformed(ActionEvent evt) { 
        jButton1_ActionPerformed(evt);
      }
    });
    cp.add(jButton1);
    // Ende Komponenten
 
    setVisible(true);
  } // end of public Ventile
 
  boolean a=false;
  boolean b=false;
  boolean c=false;
  boolean d=false;
  boolean e=false;
 
  // Anfang Methoden
 
  public static void main(String[] args) {
    new Ventile();
  } // end of main
 
  public void jButton2_ActionPerformed(ActionEvent evt) {
    a=true;
    System.out.print("Ventil 1 ist offen");
  } // end of jButton2_ActionPerformed
 
  public void jButton3_ActionPerformed(ActionEvent evt) {
    b=true;
    System.out.print("Ventil 2 ist offen"); 
  } // end of jButton3_ActionPerformed
 
  public void jButton4_ActionPerformed(ActionEvent evt) {
    c=true;
     System.out.print("Ventil 3 ist offen");
  } // end of jButton4_ActionPerformed
 
  public void jButton5_ActionPerformed(ActionEvent evt) {
    d=true;
     System.out.print("Ventil 4 ist offen");
  } // end of jButton5_ActionPerformed
 
  public void jButton6_ActionPerformed(ActionEvent evt) {
    e=true;
     System.out.print("Ventil 5 ist offen");
  } // end of jButton6_ActionPerformed
 
  public void jButton1_ActionPerformed(ActionEvent evt) {
    if (c) {
      if (a||b) {
        if (d||e) {
          jTextField1.setText("Die Külflusigkeit fliest durch die Ventile fließen");
        } // end of if
        else {
          jTextField1.setText("Die Külflusigkeit fliest nicht durch die Ventile fließen");
        } // end of if-else
      } // end of if
      else {
        jTextField1.setText("Die Külflusigkeit fliest nicht durch die Ventile fließen");
      } // end of if-else
    } // end of if
    else {
      jTextField1.setText("Die Külflusigkeit fliest nicht durch die Ventile fließen");
    } // end of if-else
    a=false;
    b=false;
    c=false;
    d=false;
    e=false;
    System.out.print("alle Ventile sind wieder geschlossen");
  } // end of jButton1_ActionPerformed
 
  // Ende Methoden
} // end of class Ventile