Tugas PBO Jam Digital

 Jam Digital

•  Tampilan 

• Hasil Output Display
  

• Display GUI
  

Source Code

1. Number Display

 /**  
  * Write a description of class Number_Display here.  
  *  
  * @author (Yudhis)  
  * @version (29/09/2018)  
  */  
 public class NumberDisplay    
  {    
   private int batas;    
   private int nilai;    
   public NumberDisplay(int Maksimal)    
   {    
   batas = Maksimal;    
   nilai = 0;    
   }    
   public int getValue()    
   {    
   return nilai;    
   }    
   public void increment()    
   {    
   nilai = (nilai + 1) % batas;    
   }    
   public String getDisplayValue()    
   {    
   if(nilai < 10)    
   {    
    return "0" + nilai;    
   }    
   else    
   {    
    return "" + nilai;    
   }    
   }    
   public void setValue(int replacementValue)    
   {    
   if((replacementValue >= 0) && (replacementValue < batas))    
   {    
    nilai = replacementValue;    
   }    
   }    
  }    

 2. Clock Display

 /**  
  * Write a description of class Clock_Display here.  
  *  
  * @author (Yudhis)  
  * @version (29/09/2018)  
  */  
 public class ClockDisplay    
  {    
   private NumberDisplay jam;    
   private NumberDisplay menit;    
   private String displayString;   
   public ClockDisplay()    
   {    
   jam = new NumberDisplay(24);    
   menit = new NumberDisplay(60);    
   updateDisplay();    
   }    
   public ClockDisplay(int hour, int minute)    
   {    
   jam = new NumberDisplay(24);    
   menit = new NumberDisplay(60);    
   setTime(hour,minute);    
   }    
   public void timeTick()    
   {    
   menit.increment();    
   if(menit.getValue() == 0)    
   {    
    jam.increment();    
   }    
   updateDisplay();    
   }    
   public void setTime(int hour, int minute)    
   {    
   jam.setValue(hour);    
   menit.setValue(minute);    
   updateDisplay();    
   }    
   public String getTime()    
   {    
   return displayString;    
   }    
   private void updateDisplay()    
   {    
   displayString = jam.getDisplayValue() + ":" + menit.getDisplayValue();    
   }    
  }    

  3. Clock GUI

 /**  
  * Write a description of class Clock_Display here.  
  *  
  * @author (Yudhis)  
  * @version (29/09/2018)  
  */  
  import java.awt.*;    
  import java.awt.event.*;    
  import javax.swing.*;    
  import javax.swing.border.*;    
  public class ClockGUI    
  {    
   private JFrame frame;    
   private JLabel label;    
   private ClockDisplay clock;    
   private boolean clockOn = false;    
   private TimerThread timerThread;    
   public void Clock()    
   {    
   makeFrame();    
   clock = new ClockDisplay();    
   }    
   private void start()    
   {    
   clockOn = true;    
   timerThread = new TimerThread();    
   timerThread.start();    
   }    
   private void stop()    
   {    
   clockOn = false;    
   }    
   private void step()    
   {    
   clock.timeTick();    
   label.setText(clock.getTime());    
   }    
   private void showAbout()    
   {    
   JOptionPane.showMessageDialog (frame, "Clock Version 0.1\n" +    
   "Membuat jam digital simpel dengan Java.",    
   "About Clock",    
   JOptionPane.INFORMATION_MESSAGE);    
   }    
   private void quit()    
   {    
   System.exit(0);    
   }    
   private void makeFrame()    
   {    
   frame = new JFrame("Clock");    
   JPanel contentPane = (JPanel)frame.getContentPane();    
   contentPane.setBorder(new EmptyBorder(1,60,1,60));    
   makeMenuBar(frame);    
   contentPane.setLayout(new BorderLayout(12,12));    
   label = new JLabel("00:00", SwingConstants.CENTER);    
   Font displayFont = label.getFont().deriveFont(96.0f);    
   label.setFont(displayFont);    
   contentPane.add(label, BorderLayout.CENTER);    
   JPanel toolbar = new JPanel();    
   toolbar.setLayout(new GridLayout(1,0));    
   JButton startButton = new JButton("Start");    
   startButton.addActionListener(e->start());    
   toolbar.add(startButton);    
   JButton stopButton = new JButton("Stop");    
   stopButton.addActionListener(e->stop());    
   toolbar.add(stopButton);    
   JButton stepButton = new JButton("Step");    
   stepButton.addActionListener(e->step());    
   toolbar.add(stepButton);    
   JPanel flow = new JPanel();    
   flow.add(toolbar);    
   contentPane.add(flow, BorderLayout.SOUTH);    
   frame.pack();    
   Dimension d = Toolkit.getDefaultToolkit().getScreenSize();    
   frame.setLocation(d.width/2 - frame.getWidth()/2, d.height/2 - frame.getHeight()/2);    
   frame.setVisible(true);    
   }    
   private void makeMenuBar(JFrame frame)    
   {    
   final int SHORTCUT_MASK =    
   Toolkit.getDefaultToolkit().getMenuShortcutKeyMask();    
   JMenuBar menubar = new JMenuBar();    
   frame.setJMenuBar(menubar);    
   JMenu menu;    
   JMenuItem item;    
   menu = new JMenu("File");    
   menubar.add(menu);    
   item = new JMenuItem("About Clock...");    
    item.addActionListener(e->showAbout());    
   menu.add(item);    
   menu.addSeparator();    
   item = new JMenuItem("Quit");    
    item.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q,SHORTCUT_MASK));    
    item.addActionListener(e->quit());    
   menu.add(item);    
   }    
   class TimerThread extends Thread    
   {    
   public void run()    
    {    
    while(clockOn)    
    {    
     step();    
     pause();    
    }    
    }    
    private void pause()    
    {    
    try    
    {    
     Thread.sleep(900);    
    }    
    catch(InterruptedException exc)    
    {    
    }    
   }    
   }    
  }    

3. Test Clock Display

 /**   
  * Source Code Test Clock Display   
  *   
  * @author (Yudhistiro Adi Nugroho)   
  * @version (29/09/2018)   
  */   
  public class TestClockDisplay    
  {    
   public TestClockDisplay()    
   {    
   }    
   public void test()    
   {    
   ClockDisplay clock = new ClockDisplay();    
   clock.setTime(23,24);    
   System.out.println(clock.getTime());    
   clock.setTime(10,00);    
   System.out.println(clock.getTime());    
   }    
  }