Tugas PBO A - Membuat Jam

Tugas PBO A kali ini yaitu membuat jam dan digital clock menggunakan aplikasi BlueJ. 

Nama : Ifta Jihan N
NRP : 05111740000034
Kelas : PBO A

Terdapat 3 Class yang digunakan, yaitu:
1. NumberDisplay : untuk mengatur menit dan jam.
2. ClockDisplay : sebagai tampilan dari jam yang telah dibuat.
3. TestClockDisplay : test case dari jam yang dibuat (menampilkan jam yang telah ditentukan).

Source code:

1. NumberDisplay

 /**  
  * Write a description of class NumberDisplay here.  
  *  
  * @author Ifta Jihan N (05111740000034)  
  * PBO A  
  * @version 27/09/2018  
  */  
 public class NumberDisplay  
 {  
   private int limit;  
   private int value;  
   public NumberDisplay(int rollOverLimit)  
   {  
     limit=rollOverLimit;  
     value=0;  
   }  
   public int getValue()  
   {  
     return value;  
   }  
   public String getDisplayValue()  
   {  
     if(value<10){  
       return "0" + value;  
     }  
     else{  
       return "" + value;  
     }  
   }  
   public void setValue(int replacementValue)  
   {  
     if((replacementValue>=0)&&(replacementValue<limit))  
     {  
       value=replacementValue;  
     }  
   }  
   public void increment()  
   {  
     value=(value+1)%limit;  
   }  
 }  

2. ClockDisplay

 /**  
  * Write a description of class ClockDisplay here.  
  *  
  * @author Ifta Jihan N (05111740000034)  
  * PBO A  
  * @version 27/09/2018  
  */  
 public class ClockDisplay  
 {  
   private NumberDisplay hours;  
   private NumberDisplay minutes;  
   private String displayString;  
   public ClockDisplay()  
   {  
     hours=new NumberDisplay(24);  
     minutes=new NumberDisplay(60);  
     updateDisplay();  
   }  
   public ClockDisplay(int hour, int minute)  
   {  
     hours=new NumberDisplay(24);  
     minutes=new NumberDisplay(60);  
     setTime(hour,minute);  
   }  
   public void timeTick()  
   {  
     minutes.increment();  
     if(minutes.getValue()==0)  
     {  
       hours.increment();  
     }  
     updateDisplay();  
   }  
   public void setTime(int hour, int minute)  
   {  
     hours.setValue(hour);  
     minutes.setValue(minute);  
     updateDisplay();  
   }  
   public String getTime()  
   {  
     return displayString;  
   }  
   private void updateDisplay()  
   {  
     int hour = hours.getValue();  
     String suffix;  
     if(hour >= 12)  
     {  
       suffix = " PM";  
     }  
     else  
     {  
       suffix = " AM";  
     }  
     displayString=hours.getDisplayValue() + "." + minutes.getDisplayValue() + suffix;  
   }  
 }  

3. TestClockDisplay

 /**  
  * Write a description of class TestClockDisplay here.  
  *  
  * @author Ifta Jihan N (05111740000034)  
  * PBO A  
  * @version 27/09/2018  
  */  
 public class TestClockDisplay  
 {  
   public TestClockDisplay()  
   {  
   }  
   public void test(){  
     ClockDisplay clock=new ClockDisplay();  
     clock.setTime(22,15);  
     System.out.println(clock.getTime());  
     clock.setTime(12,45);  
     System.out.println(clock.getTime());  
     clock.setTime(17,05);  
     System.out.println(clock.getTime());  
     clock.setTime(11,25);  
     System.out.println(clock.getTime());  
   }  
 }  

Berikut ini hasilnya:

Berikut ini source code saya untuk membuat GUI Digital Clock

1. Class DigitalClock

 /**  
  * Write a description of class DigitalClock here.  
  *  
  * @author Ifta Jihan N (05111740000034)  
  * PBO A  
  * @version (27/09/2018)  
  */  
 import java.awt.Font;  
 import java.awt.FlowLayout;  
 import javax.swing.JFrame;  
 import javax.swing.JLabel;  
 public class DigitalClock extends JFrame  
 {  
   JLabel jlabClock;  
   ClockThread ct;  
   public DigitalClock()  
   {  
     super("Digital Clock by Jihan");   
     jlabClock = new JLabel("Time");  
     setLayout(new FlowLayout());  
     setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
     jlabClock.setFont(new Font("Arial", Font.BOLD, 25));  
     add(jlabClock);  
     setSize(430,100);  
     setLocationRelativeTo(null);  
     ct = new ClockThread(this);  
     setVisible(true);  
   }  
   public static void main(String[] args)  
   {  
     new DigitalClock();  
   }  
 }  

2. Class ClockThread

 /**  
  * Write a description of class ClockThread here.  
  *  
  * @author Ifta Jihan N (05111740000034)  
  * PBO A  
  * @version 27/09/2018  
  */  
 import java.util.Date;  
 public class ClockThread extends Thread  
 {  
   DigitalClock dc;  
   String time;  
   public ClockThread(DigitalClock dc)  
   {  
     this.dc = dc;  
     start();  
   }  
   public void run()  
   {  
     while(true)  
     {  
       time= ""+new Date();  
       dc.jlabClock.setText(time);  
     }  
   }  
 }  

Berikut ini hasilnya

Menampilkan tanggal dan tahun serta jam yang sesuai dengan time zone ICT (Indochina Time).