UAS Matematika.java June 28, 2008
Posted by sientta in Uncategorized.add a comment
/*
* Matematika.java
*
* Created on 21 Juni 2008, 10:30
*/
/**
*
* @author : Christine Sientta Dewi
* NIM : 322207567
* Tugas UAS Matematika.java
*/
public class MatematikaForm extends javax.swing.JFrame {
/** membuat MatematikaForm.java */
public MatematikaForm() {
initComponents();
}
// <editor-fold defaultstate=”collapsed” desc=”Generated Code”>
private void initComponents() {
textNilai1 = new javax.swing.JTextField();
textNilai2 = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
labelHasil = new javax.swing.JLabel();
cmdTambah = new javax.swing.JButton();
cmdKurang = new javax.swing.JButton();
cmdKali = new javax.swing.JButton();
cmdBagi = new javax.swing.JButton();
jLabel3 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle(“Matematika”);
setBackground(new java.awt.Color(255, 0, 102));
setResizable(false);
jLabel1.setFont(new java.awt.Font(“Comic Sans MS”, 0, 11));
jLabel1.setText(“Masukkan Angka Pertama”);
jLabel2.setFont(new java.awt.Font(“Comic Sans MS”, 0, 11)); // NOI18N
jLabel2.setText(“Masukkan Angka Kedua”);
labelHasil.setFont(new java.awt.Font(“Comic Sans MS”, 1, 14));
labelHasil.setForeground(new java.awt.Color(204, 0, 0));
cmdTambah.setFont(new java.awt.Font(“Comic Sans MS”, 0, 11)); // NOI18N
cmdTambah.setLabel(“+”);
cmdTambah.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cmdTambahActionPerformed(evt);
}
});
cmdKurang.setFont(new java.awt.Font(“Comic Sans MS”, 0, 11)); // NOI18N
cmdKurang.setLabel(“-“);
cmdKurang.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cmdKurangActionPerformed(evt);
}
});
cmdKali.setFont(new java.awt.Font(“Comic Sans MS”, 0, 11));
cmdKali.setLabel(“x”);
cmdKali.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cmdKaliActionPerformed(evt);
}
});
cmdBagi.setFont(new java.awt.Font(“Comic Sans MS”, 0, 11));
cmdBagi.setLabel(“:”);
cmdBagi.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cmdBagiActionPerformed(evt);
}
});
jLabel3.setFont(new java.awt.Font(“Comic Sans MS”, 1, 11));
jLabel3.setForeground(new java.awt.Color(255, 0, 0));
jLabel3.setText(“T o t a l”);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jLabel2, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)))
.addComponent(jLabel3))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(labelHasil, javax.swing.GroupLayout.PREFERRED_SIZE, 71, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(textNilai1, javax.swing.GroupLayout.DEFAULT_SIZE, 73, Short.MAX_VALUE)
.addComponent(textNilai2, javax.swing.GroupLayout.PREFERRED_SIZE, 51, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addGroup(layout.createSequentialGroup()
.addComponent(cmdTambah, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(cmdKurang, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(cmdBagi, javax.swing.GroupLayout.PREFERRED_SIZE, 37, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(cmdKali)))
.addGap(18, 18, 18))
);
layout.linkSize(javax.swing.SwingConstants.HORIZONTAL, new java.awt.Component[] {labelHasil, textNilai1, textNilai2});
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(textNilai1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel1))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel3)
.addComponent(labelHasil)))
.addComponent(textNilai2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(cmdTambah)
.addComponent(cmdKurang)
.addComponent(cmdBagi)
.addComponent(cmdKali))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
layout.linkSize(javax.swing.SwingConstants.VERTICAL, new java.awt.Component[] {labelHasil, textNilai2});
pack();
}// </editor-fold>
private void cmdTambahActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int hasil = (int) (Integer.parseInt(textNilai1.getText())) +
(Integer.parseInt(textNilai2.getText()));
labelHasil.setText(“”+hasil);
}
private void cmdKurangActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int hasil = (int) (Integer.parseInt(textNilai1.getText())) –
(Integer.parseInt(textNilai2.getText()));
labelHasil.setText(“”+hasil);
}
private void cmdKaliActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int hasil = (int) (Integer.parseInt(textNilai1.getText())) *
(Integer.parseInt(textNilai2.getText()));
labelHasil.setText(“”+hasil);
}
private void cmdBagiActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
/**double hasil = (double) (Float.parseFloat(textNilai1.getText())) /
(Float.parseFloat(textNilai2.getText()));
labelHasil.setText(“”+hasil); */
double hasil = (double) (Integer.parseInt(textNilai1.getText())) /
(Integer.parseInt(textNilai2.getText()));
labelHasil.setText(“”+hasil);
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new MatematikaForm().setVisible(true);
}
});
}
// Variables declaration – do not modify
private javax.swing.JButton cmdBagi;
private javax.swing.JButton cmdKali;
private javax.swing.JButton cmdKurang;
private javax.swing.JButton cmdTambah;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel labelHasil;
private javax.swing.JTextField textNilai1;
private javax.swing.JTextField textNilai2;
// End of variables declaration
}
Membuat class dan memanggil object June 5, 2008
Posted by sientta in eresha.Tags: eresha, java
add a comment
Membuat Class dan Memanggil Object
Sebelum kita mengenal class, kita harus mengerti mengenai Program.
Program : adalah kumpulan instruksi-instruksi tersendiri yang biasanya disebut source code, sedangkan Class adalah implementasi konkrit dari suatu interface. Class dapat juga disebut sebagai template/definisi dari suatu Object. Class tidak harus mengimplentasi suatu interface Object adalah instance dari suatu Class
Dalam Membuat class: yang dimaksud class pada program tersebut adalah saya misalkan :
Rujak (rujak.java) dalam membuat 1 paket/ 1 piring rujak terdiri dari buah-buahan misalnya Kedondong, Mangga, Jambu yang merupakan Objek dari Isi Rujak(isirujak). Object adalah bagian dari Class, object memiliki sifat independen
Program utama pada rujak.java . dimana bila setiap memanggil
dewi.buah1 = kedondong,
dewi.buah2 = mangga
dewi.buah3 = jambu
dewi.piring = 2 .
Dibawah ini salah satu contoh code membuat class dan memanggil object:
//berkas: rujak.java
class isirujak{
String buah1;
String buah2;
String buah3;
int piring;
}
public class rujak{
public static void main(String args[]) {
//fungsi berikut berguna untuk memanggil
//class isirujak
isirujak dewi = new isirujak();
//fungsi berikut untuk mengisi variabel instan
// pada varibel dewi yang dikoneksikan dengan
// class isirujak
dewi.buah1 = “kedondong”;
dewi.buah2 = “mangga”;
dewi.buah3 = “jambu”;
dewi.piring = 2 ;
//menampilkan isi variabel pada monitor
System.out.println(“rujakku isinya terdiri “+dewi.buah1+”, “+dewi.buah2+”, dan “+dewi.buah3);
System.out.println(“jumlah piring ada = “+dewi.piring);
}
}
End.
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