baru posting maklumlaaah pemula..
nie langsung kopas ja source kodenya.
1. Buat Class aplikasion copas source kodenya dibawah ini.
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package bola;
/**
*
* @author caffe software
*/
public class Bola {
public double jarijari;
public Bola(){
}
public double pi =3.14;
public void setjarijari (int jarijari){
this.jarijari = jarijari;
}
public double getjarijari (){
return jarijari;
}
public double getluas (){
return 4*pi*jarijari*jarijari;
}
public double getvolume(){
return (4/3)*pi*jarijari*jarijari*jarijari;
}
}
=====================================================================
2. Buat class Jframex desain sperti dibawah ini.
setelah selesai masukkan source codenya dibawah ini.
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/*
* NewJFrame.java
*
* Created on 16 Nov 12, 11:22:02
*/
package bola;
import java.awt.event.KeyEvent;
import javax.swing.JOptionPane;
/**
*
* @author hp mini
*/
public class NewJFrame extends javax.swing.JFrame {
/** Creates new form NewJFrame */
private Bola bl = new Bola ();
public NewJFrame() {
initComponents();
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jTextField3 = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
addWindowListener(new java.awt.event.WindowAdapter() {
public void windowActivated(java.awt.event.WindowEvent evt) {
formWindowActivated(evt);
}
});
jLabel1.setLabelFor(jTextField1);
jLabel1.setText("Jari Jari");
jLabel2.setLabelFor(jTextField2);
jLabel2.setText("Luas");
jLabel3.setLabelFor(jTextField3);
jLabel3.setText("Volume");
jButton1.setMnemonic('H');
jButton1.setText("Hitung");
jButton1.setToolTipText("Hitung Dari Jari Jari");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton2.setMnemonic('R');
jButton2.setText("Reset");
jButton2.setToolTipText("Hapus Dan Ulang");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jButton3.setMnemonic('S');
jButton3.setText("Selesai");
jButton3.setToolTipText("Klik jika udah Selesai");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});
jTextField1.setText("10");
jTextField1.setToolTipText("Beri Nilai Untuk Jari Jari");
jTextField1.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyTyped(java.awt.event.KeyEvent evt) {
jTextField1KeyTyped(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(45, 45, 45)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel1)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jLabel2, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel3, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGap(27, 27, 27)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField3)
.addComponent(jTextField1)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 93, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(198, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(295, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jButton3)
.addComponent(jButton2)
.addComponent(jButton1))
.addGap(42, 42, 42))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(23, 23, 23)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(8, 8, 8)
.addComponent(jButton1)
.addGap(14, 14, 14)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(16, 16, 16)
.addComponent(jButton2)
.addGap(16, 16, 16)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(30, 30, 30)
.addComponent(jButton3)
.addContainerGap(64, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
bl.setjarijari(Integer.parseInt(jTextField1.getText()));
jTextField2.setText(bl.getluas()+"");
jTextField3.setText(bl.getvolume()+"");
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// Tombol Reset
formWindowActivated(null);
}
private void formWindowActivated(java.awt.event.WindowEvent evt) {
// saat Aplikasi Di jalankan
jTextField1.setText("");
jTextField2.setText("");
jTextField3.setText("");
jTextField1.requestFocus();
}
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
System.exit(0);
}
private void jTextField1KeyTyped(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
char c = evt.getKeyChar();
if (!(Character.isDigit(c)
||(c==KeyEvent.VK_BACK_SPACE)
||(c==KeyEvent.VK_DELETE))){
getToolkit().beep();
JOptionPane.showMessageDialog(null, "Harus Angka (0-9)");
evt.consume();
}
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(NewJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
// End of variables declaration
}
Nie lingnya yang sudah jadi. Tinggal download
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