TUGAS

PENGANTAR TEKNIK INFORMASI

Dosen Pembimbing Lia Ulfa, S.ST

Contoh Program yang Dijalankan di Under Windows

Disusun Oleh

Muhammad Budi Rahman

TI.13105

Jurusan Teknik Informatika

AKADEMI KOMUNITAS NEGERI

KABUPATEN SUMBAWA BARAT

Program Yang dijalankan Melalaui UNDER WINDOWS

Window Event di Java

Contoh program berikut ini memberikan contoh bagaimana penanganan event di dalam window. Event akan aktif saat window diubah ukurannnya, diclose, aktif, dan sebagainya. Listener yang digunakan dalam contoh program ini adalah WindowListener, WindowFocusListener dan WindowStateListener.

1.      /*

2.       * WindowEventDemo.java is a 1.4 example that requires

3.       * no other files.

4.       */

5.       

6.      import javax.swing.*;

7.      import java.awt.*;

8.      import java.awt.event.*;

9.       

10.  public class WindowEventDemo extends JPanel

11.                               implements WindowListener,

12.                                          WindowFocusListener,

13.                                          WindowStateListener {

14.      final static String newline = "\n";

15.      final static String space = "    ";

16.      static JFrame frame;

17.      JTextArea display;

18.   

19.      public WindowEventDemo() {

20.          super(new BorderLayout());

21.          display = new JTextArea();

22.          display.setEditable(false);

23.          JScrollPane scrollPane = new JScrollPane(display);

24.          scrollPane.setPreferredSize(new Dimension(500, 450));

25.          add(scrollPane, BorderLayout.CENTER);

26.   

27.          frame.addWindowListener(this);

28.          frame.addWindowFocusListener(this);

29.          frame.addWindowStateListener(this);

30.   

31.          checkWM();

32.      }

33.   

34.      //Some window managers don't support all window states.

35.      //For example, dtwm doesn't support true maximization,

36.      //but mimics it by resizing the window to be the size

37.      //of the screen.  In this case the window does not fire

38.      //the MAXIMIZED_ constants on the window's state listener.

39.      //Microsoft Windows supports MAXIMIZED_BOTH, but not

40.      //MAXIMIZED_VERT or MAXIMIZED_HORIZ.

41.      public void checkWM() {

42.          Toolkit tk = frame.getToolkit();

43.          if (!(tk.isFrameStateSupported(Frame.ICONIFIED))) {

44.              displayMessage(

45.                 "Your window manager doesn't support ICONIFIED.");

46.          }

47.          if (!(tk.isFrameStateSupported(Frame.MAXIMIZED_VERT))) {

48.              displayMessage(

49.                 "Your window manager doesn't support MAXIMIZED_VERT.");

50.          }

51.          if (!(tk.isFrameStateSupported(Frame.MAXIMIZED_HORIZ))) {

52.              displayMessage(

53.                 "Your window manager doesn't support MAXIMIZED_HORIZ.");

54.          }

55.          if (!(tk.isFrameStateSupported(Frame.MAXIMIZED_BOTH))) {

56.              displayMessage(

57.                 "Your window manager doesn't support MAXIMIZED_BOTH.");

58.          } else {

59.              displayMessage(

60.                 "Your window manager supports MAXIMIZED_BOTH.");

61.          }

62.      }

63.   

64.      public void windowClosing(WindowEvent e) {

65.          displayMessage("WindowListener method called: windowClosing.");

66.   

67.          //A pause so user can see the message before

68.          //the window actually closes.

69.          ActionListener task = new ActionListener() {

70.              boolean alreadyDisposed = false;

71.              public void actionPerformed(ActionEvent e) {

72.                  if (!alreadyDisposed) {

73.                      alreadyDisposed = true;

74.                      frame.dispose();

75.                  } else { //make sure the program exits

76.                      System.exit(0);

77.                  }

78.              }

79.          };

80.          Timer timer = new Timer(500, task); //fire every half second

81.          timer.setInitialDelay(2000);        //first delay 2 seconds

82.          timer.start();

83.      }

84.   

85.      public void windowClosed(WindowEvent e) {

86.          //This will only be seen on standard output.

87.          displayMessage("WindowListener method called: windowClosed.");

88.      }

89.   

90.      public void windowOpened(WindowEvent e) {

91.          displayMessage("WindowListener method called: windowOpened.");

92.      }

93.   

94.      public void windowIconified(WindowEvent e) {

95.          displayMessage("WindowListener method called: windowIconified.");

96.      }

97.   

98.      public void windowDeiconified(WindowEvent e) {

99.          displayMessage("WindowListener method called: windowDeiconified.");

100.                          }

101.                       

102.                          public void windowActivated(WindowEvent e) {

103.                              displayMessage("WindowListener method called: windowActivated.");

104.                          }

105.                       

106.                          public void windowDeactivated(WindowEvent e) {

107.                              displayMessage("WindowListener method called: windowDeactivated.");

108.                          }

109.                       

110.                          public void windowGainedFocus(WindowEvent e) {

111.                                        displayMessage("WindowFocusListener method called: windowGainedFocus.");

112.                          }

113.                       

114.                          public void windowLostFocus(WindowEvent e) {

115.                                        displayMessage("WindowFocusListener method called:  windowLostFocus.");

116.                          }

117.                       

118.                          public void windowStateChanged(WindowEvent e) {

119.                              displayStateMessage(

120.                                "WindowStateListener method called: windowStateChanged.", e);

121.                          }

122.                       

123.                          void displayMessage(String msg) {

124.                              display.append(msg + newline);

125.                              System.out.println(msg);

126.                          }

127.                       

128.                          void displayStateMessage(String prefix, WindowEvent e) {

129.                              int state = e.getNewState();

130.                              int oldState = e.getOldState();

131.                              String msg = prefix

132.                                         + newline + space

133.                                         + "New state: "

134.                                         + convertStateToString(state)

135.                                         + newline + space

136.                                         + "Old state: "

137.                                         + convertStateToString(oldState);

138.                              display.append(msg + newline);

139.                              System.out.println(msg);

140.                          }

141.                       

142.                          String convertStateToString(int state) {

143.                              if (state == Frame.NORMAL) {

144.                                  return "NORMAL";

145.                              }

146.                              if ((state & Frame.ICONIFIED) != 0) {

147.                                  return "ICONIFIED";

148.                              }

149.                              //MAXIMIZED_BOTH is a concatenation of two bits, so

150.                              //we need to test for an exact match.

151.                                        if ((state & Frame.MAXIMIZED_BOTH) == Frame.MAXIMIZED_BOTH) {

152.                                  return "MAXIMIZED_BOTH";

153.                              }

154.                              if ((state & Frame.MAXIMIZED_VERT) != 0) {

155.                                  return "MAXIMIZED_VERT";

156.                              }

157.                              if ((state & Frame.MAXIMIZED_HORIZ) != 0) {

158.                                  return "MAXIMIZED_HORIZ";

159.                              }

160.                              return "UNKNOWN";

161.                          }

162.                       

163.                          /**

164.                           * Create the GUI and show it.  For thread safety,

165.                           * this method should be invoked from the

166.                           * event-dispatching thread.

167.                           */

168.                          private static void createAndShowGUI() {

169.                              //Make sure we have nice window decorations.

170.                              JFrame.setDefaultLookAndFeelDecorated(true);

171.                       

172.                              //Create and set up the window.

173.                              frame = new JFrame("WindowEventDemo");

174.                              frame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

175.                       

176.                              //Create and set up the content pane.

177.                              JComponent newContentPane = new WindowEventDemo();

178.                              newContentPane.setOpaque(true); //content panes must be opaque

179.                              frame.setContentPane(newContentPane);

180.                       

181.                              //Display the window.

182.                              frame.pack();

183.                              frame.setVisible(true);

184.                          }

185.                       

186.                          public static void main(String[] args) {

187.                              //Schedule a job for the event-dispatching thread:

188.                              //creating and showing this application's GUI.

189.                              javax.swing.SwingUtilities.invokeLater(new Runnable() {

190.                                  public void run() {

191.                                      createAndShowGUI();

192.                                  }

193.                              });

194.                          }

195.                      }

Program Yang dijalankan Melalaui UNDER DOS

CONTOH BORLAND C++ MENGHITUNG 2 CONDISI

Berikut Progrmnya;

#include <conio.h>
#include <stdio.h>
#include <iostream.h>
main()
{
int  i,jd,uk,jmlah,total,harga;
char mc,lagi,enter;
atas:
clrscr();
cout<<”\t\tBOYCREATIONS”<<endl;
cout<<”\tPusat Penjualan Cat Tembok”<<endl;
cout<<”———————————”<<endl;
cout<<”\A. ICI Dulux”<<endl;
cout<<    “1. Ukuran Kecil   –> Rp. 15000\n”;
cout<<    “2. Ukuran Sedang  –> Rp. 20000\n”;
cout<<    “3. Ukuran Besar   –> Rp. 25000\n”;
cout<<”\nB. Movilex VIP”<<endl;
cout<<    “1. Ukuran Kecil   –> Rp. 13500\n”;
cout<<    “2. Ukuran Sedang  –> Rp. 17500\n”;
cout<<    “3. Ukuran Besar   –> Rp. 20000\n”;
cout<<”\nC. Jotun Strax”<<endl;
cout<<    “1. Ukuran Kecil   –> Rp. 15000\n”;
cout<<    “2. Ukuran Sedang  –> Rp. 18500\n”;
cout<<    “3. Ukuran Besar   –> Rp. 22000\n”;
cout<<”———————————”<<endl;
cout<<”Input Jumlah Data                : “;cin>>jd;
for (i=1;i<=jd;i++)
{
cout<<”———————————”<<endl;
cout<<”Pilih Merek Cat [A/B/C]          : “;cin>>mc;
cout<<”Pilih Ukuran Kaleng [1/2/3]      : “;cin>>uk;
if (mc==’A'||mc==’a')
switch(uk)
{
case 1:harga=15000;break;
case 2:harga=20000;break;
case 3:harga=25000;break;
default:harga=0;break;
}
else if (mc==’B'||mc==’b')
switch(uk)
{
case 1:harga=13500;break;
case 2:harga=17500;break;
case 3:harga=20000;break;
default:harga=0;break;
}
else if(mc==’C'||mc==’c')
switch(uk)
{
case 1:harga=15000;break;
case 2:harga=18500;break;
case 3:harga=22000;break;
default:harga=0;break;
}
else
{cout<<”\nAnda salah memasukan kode cat (GUNAKAN HURUF KAPITAL)”;
cout<<”\nTEKAN (B) LALU ENTER UNTUK KEMBALI MENGHITUNG : “;cin>>enter;
if(enter==’B'||enter==’b')
goto atas;
else
cout<<”\tDATA EROR”;
goto bawah;}
cout<<”Harga Satuan Barang              : Rp.”<<harga<<endl;
cout<<”Jumlah Yang dibeli               : “;cin>>jmlah;
total=(harga*jmlah);
cout<<”Harga yang harus dibayar         : Rp.”<<total<<endl;
cout<<”———————————”<<endl;
}
cout<<”Ingin Hitung Lagi [Y/N]          : “;cin>>lagi;
if (lagi==’Y'||lagi==’y')
goto atas;
else
cout<<”\n TERIMA KASIH BANYAK “<<endl;
bawah:
getch();
}