Check inputan integer tidak boleh kosong

Check inputan integer tidak boleh kosong menggunakan if.

adek yg lucu, nanyain sesuatu tentang java . . .

ya sebisanya aja ya . . . ntaah ni bener pa nggak . . .tp menurutQ ya sprti ini . . .

mg bermanfaat bt adek yg lucu . . .heheheh ckckckckckkk

& bermanfaat buat semuanya . . .amiin

/*

* To change this template, choose Tools | Templates

* and open the template in the editor.

*/

package appgambar;

import javax.swing.JOptionPane;

/**

*

* @author Christanti

*/

public class diIsiHarusIntegerSajaPakekIf {

public static void main(String[] args) {

String Nilai = JOptionPane.showInputDialog("Masukkan nilainya = ");

if (Nilai.isEmpty() == false) {

try {

int N = Integer.parseInt(Nilai);

System.out.println("ini angka = " + N);

} catch (Exception e) {

System.out.println("Masukkan angka");

}

}else {

System.out.print("Mohon di Isi");

}

}

}

Selamat mencoba . . .

Ultah Si Intan Ratna Sari...

"Ngerjain Intan pas UltahNya, hehehe s"

Tanggal 27 Januari 2010 pukul 00.01 WIB, tepatnya di Ciburial no 45, dago pakar timur bandung. terjadi kehebohan dari anak2 yang lg KP di BITCamp, melancarkan aksiNya tuk ngerjain slah satu nak KP. dia berasal dari SMK pgri 3 Malang nmaNya intan Ratna Sari biasa dPanggil si Ounend . . .hohohohooo (tauu tuh knp bisa dPanggil si Ounend,,,ckckckckkk ^^)

nGgak usaah basa-basii eezzzst. . . nich buat dokumenter aja . . .
tuukk adek tersayaang si Ounend yg maniiss dan slalu berkata "Jadiiii . . . meraasaaa sexy . . .hehehe"

muka udah anguus gitu masih aja narsiiss , , ,dasaarr si Sexy hohohooo

niichhh dia Korban qt . . . keep smile

heemmhhh semw pda megangin siKorban . . .tyuuuzzz kasiihh bedaak anguus biaar +cantik, eeh jgn lupa ttd . . .biasaaa buat kenang2an . . . akhirnya cheyseyna mncul jg . .. wkwkwkwkkk

yeee horee . . .seneeng . .. tp anggotaNya ilaang 1. . .maMaass Lukmaan . . .hohohoo ^^

anggota keluarga besar BITCamp. . .abseen . . .yg nggak masuk maMaas Lukmaan . . hehehe

happy birthday yach si Ounend tersayaang . . .we always luph u . . ckckckkk

semwa2 narsiiiiszzzttt . . .

smile . . . =)

yg Ultaah gak mo liat kamera . . . tmbeen biasaNya narsiiiszzttt abiss . . . hehehe

Suapan roti buat si Tolee Guntur . . . hohoho

Suapan roti buat Si Jefri Pipi . . . hohoho

Poseeeee Nggilaani . . .ckckckk ^^

HA HA HA ! ! !

Suapan roti buat si LuckenToet . . . hohoho

Suapan roti buat si Mamous . . . hohoho

Suapan roti buat si Dhaws alias Gontor . . . hohoho

Ini nichhh . . . Suapan roti buat si Cheyseyna . . .wkwkwkk hohoho

yang ini prend bestNya, Suapan roti buat si Yo2ana . . .hohoho

Cekkrriiikkk . . . hohohoo

eheemm si Puss deket2 nich . . .wkwkwkk ^^

ada yg ketahuaann PDKT , , , :-/ hahahaa betuul pa nggak ya ? ? ? hehehe

Potoong JellyNya, potong JellyNya . . .ckckckkk ^^

Lhaaa ini dia yg dTunggu2 . . .wkwkwwkkk Suapan roti buat si Puss apa ya ? ? ?si Puss tersayang dech . . . kan semua saling menyayangii . . .hohoho ^^

Source Code GUI JCheckBox

Menggunakan JCheckBox untuk pembuatan Nota MenuMakanan. Seperti di bawah ini :

package swingsembarang;
import javax.swing.JFrame;

/*
* MenuMakan.java
*
* Created on July 21, 2009, 11:32 AM
*/
/**
*
* @author Christanti
*/
public class MenuMakan extends javax.swing.JFrame {

/** Creates new form MenuMakan */
public MenuMakan() {
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")
// //GEN-BEGIN:initComponents
private void initComponents() {

jLabel1 = new javax.swing.JLabel();
cekSoto = new javax.swing.JCheckBox();
cekRawon = new javax.swing.JCheckBox();
cekBakso = new javax.swing.JCheckBox();
cekGudeg = new javax.swing.JCheckBox();
textSoto = new javax.swing.JTextField();
textRawon = new javax.swing.JTextField();
textBakso = new javax.swing.JTextField();
textGudeg = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
textHitung = new javax.swing.JTextField();
buttonHitung = new javax.swing.JButton();
buttonClear = new javax.swing.JButton();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

jLabel1.setFont(new java.awt.Font("Arial Black", 0, 12)); // NOI18N
jLabel1.setText("Menu Makanan");

cekSoto.setText("SOTO :5000");
cekSoto.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cekSotoActionPerformed(evt);
}
});

cekRawon.setText("RAWON :6000");
cekRawon.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cekRawonActionPerformed(evt);
}
});

cekBakso.setText("BAKSO :4000");
cekBakso.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cekBaksoActionPerformed(evt);
}
});

cekGudeg.setText("GUDEG :8000");
cekGudeg.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cekGudegActionPerformed(evt);
}
});

textSoto.setEditable(false);
textSoto.setText("0");
textSoto.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
textSotoActionPerformed(evt);
}
});

textRawon.setEditable(false);
textRawon.setText("0");

textBakso.setEditable(false);
textBakso.setText("0");

textGudeg.setEditable(false);
textGudeg.setText("0");

jLabel2.setText("Hitung");

textHitung.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
textHitungActionPerformed(evt);
}
});

buttonHitung.setText("Hitung");
buttonHitung.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
buttonHitungActionPerformed(evt);
}
});

buttonClear.setText("Clear");
buttonClear.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
buttonClearActionPerformed(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()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGap(147, 147, 147)
.addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGap(82, 82, 82)
.addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGap(71, 71, 71)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(cekGudeg, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(cekBakso, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(cekRawon, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(cekSoto, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
.addGap(37, 37, 37)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(textGudeg, javax.swing.GroupLayout.DEFAULT_SIZE, 85, Short.MAX_VALUE)
.addComponent(textRawon, javax.swing.GroupLayout.DEFAULT_SIZE, 85, Short.MAX_VALUE)
.addComponent(textBakso, javax.swing.GroupLayout.DEFAULT_SIZE, 85, Short.MAX_VALUE)
.addComponent(textSoto, javax.swing.GroupLayout.DEFAULT_SIZE, 85, Short.MAX_VALUE)
.addComponent(textHitung))))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(buttonHitung, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(buttonClear, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGap(47, 47, 47))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(38, 38, 38)
.addComponent(jLabel1)
.addGap(36, 36, 36)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(textSoto, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(cekSoto))
.addGap(3, 3, 3)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(cekRawon)
.addComponent(textRawon, 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(cekBakso)
.addComponent(textBakso, 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.LEADING)
.addComponent(cekGudeg)
.addComponent(textGudeg, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(6, 6, 6)
.addComponent(buttonHitung)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(textHitung, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(buttonClear))
.addContainerGap(46, Short.MAX_VALUE))
);

pack();
}// //GEN-END:initComponents

private void buttonClearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonClearActionPerformed
// TODO add your handling code here:
cekSoto.setSelected(false);
textSoto.setText("0");
textSoto.setEditable(false);
cekRawon.setSelected(false);
textRawon.setText("0");
textRawon.setEditable(false);
cekBakso.setSelected(false);
textBakso.setText("0");
textBakso.setEditable(false);
cekGudeg.setSelected(false);
textGudeg.setText("0");
textGudeg.setEditable(false);
}//GEN-LAST:event_buttonClearActionPerformed

@SuppressWarnings("static-access")
private void cekSotoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cekSotoActionPerformed
// TODO add your handling code here:
if (cekSoto.isSelected()== true){//GEN-LAST:event_cekSotoActionPerformed
//textSoto.enable(true);
textSoto.setEditable(true);
textSoto.setText("");


} else {
//textSoto.enable(false);
textSoto.setEditable(false);
textSoto.setText("0");


}

}

private void cekRawonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cekRawonActionPerformed
// TODO add your handling code here:
if (cekRawon.isSelected() == true) {
//textRawon.enable(true);
textRawon.setEditable(true);
textRawon.setText("");


} else {
//textRawon.enable(false);
textRawon.setEditable(false);
textRawon.setText("0");

}
}//GEN-LAST:event_cekRawonActionPerformed

private void cekBaksoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cekBaksoActionPerformed
// TODO add your handling code here:
if (cekBakso.isSelected()) {
//textBakso.enable(true);
textBakso.setEditable(true);
textBakso.setText("");

} else {
//textBakso.enable(false);
textBakso.setEditable(false);
textBakso.setText("0");
}
}//GEN-LAST:event_cekBaksoActionPerformed

private void cekGudegActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cekGudegActionPerformed
// TODO add your handling code here:
if (cekGudeg.isSelected()) {
//textGudeg.enable(true);
textGudeg.setEditable(true);
textGudeg.setText("");

} else {
//textGudeg.enable(false);
textGudeg.setEditable(false);
textGudeg.setText("0");
}//GEN-LAST:event_cekGudegActionPerformed
}
private void buttonHitungActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonHitungActionPerformed
// TODO add your handling code here:
double hitung = 0;

Double soto = (Double) ((Double.parseDouble(textSoto.getText())) * 5000);
Double rawon = (Double) ((Double.parseDouble(textRawon.getText())) * 6000);
Double Bakso = (Double) ((Double.parseDouble(textBakso.getText())) * 4000);
Double Gudeg = (Double) ((Double.parseDouble(textGudeg.getText())) * 8000);

hitung = soto + rawon + Bakso + Gudeg;
textHitung.setText(hitung + "");

}//GEN-LAST:event_buttonHitungActionPerformed

private void textSotoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_textSotoActionPerformed
// TODO add your handling code here:
}//GEN-LAST:event_textSotoActionPerformed

private void textHitungActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_textHitungActionPerformed
// TODO add your handling code here:
}//GEN-LAST:event_textHitungActionPerformed

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {

public void run() {
new MenuMakan().setVisible(true);
}
});

}

// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton buttonClear;
private javax.swing.JButton buttonHitung;
private javax.swing.JCheckBox cekBakso;
private javax.swing.JCheckBox cekGudeg;
private javax.swing.JCheckBox cekRawon;
private javax.swing.JCheckBox cekSoto;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JTextField textBakso;
private javax.swing.JTextField textGudeg;
private javax.swing.JTextField textHitung;
private javax.swing.JTextField textRawon;
private javax.swing.JTextField textSoto;
// End of variables declaration//GEN-END:variables
}

Selamat Mencoba . . . ^^

Source Code GUI mencari akar-akar persamaan kuadrat.

package swingsembarang;
import javax.swing.JFrame;

/*
* MenuMakan.java
*
*/
/**
*
* @author Christanti
*/
public class MenuMakan extends javax.swing.JFrame {

/** Creates new form MenuMakan */
public MenuMakan() {
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")
// //GEN-BEGIN:initComponents
private void initComponents() {

jLabel1 = new javax.swing.JLabel();
cekSoto = new javax.swing.JCheckBox();
cekRawon = new javax.swing.JCheckBox();
cekBakso = new javax.swing.JCheckBox();
cekGudeg = new javax.swing.JCheckBox();
textSoto = new javax.swing.JTextField();
textRawon = new javax.swing.JTextField();
textBakso = new javax.swing.JTextField();
textGudeg = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
textHitung = new javax.swing.JTextField();
buttonHitung = new javax.swing.JButton();
buttonClear = new javax.swing.JButton();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

jLabel1.setFont(new java.awt.Font("Arial Black", 0, 12)); // NOI18N
jLabel1.setText("Menu Makanan");

cekSoto.setText("SOTO :5000");
cekSoto.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cekSotoActionPerformed(evt);
}
});

cekRawon.setText("RAWON :6000");
cekRawon.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cekRawonActionPerformed(evt);
}
});

cekBakso.setText("BAKSO :4000");
cekBakso.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cekBaksoActionPerformed(evt);
}
});

cekGudeg.setText("GUDEG :8000");
cekGudeg.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
cekGudegActionPerformed(evt);
}
});

textSoto.setEditable(false);
textSoto.setText("0");
textSoto.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
textSotoActionPerformed(evt);
}
});

textRawon.setEditable(false);
textRawon.setText("0");

textBakso.setEditable(false);
textBakso.setText("0");

textGudeg.setEditable(false);
textGudeg.setText("0");

jLabel2.setText("Hitung");

textHitung.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
textHitungActionPerformed(evt);
}
});

buttonHitung.setText("Hitung");
buttonHitung.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
buttonHitungActionPerformed(evt);
}
});

buttonClear.setText("Clear");
buttonClear.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
buttonClearActionPerformed(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()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGap(147, 147, 147)
.addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGap(82, 82, 82)
.addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGap(71, 71, 71)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(cekGudeg, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(cekBakso, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(cekRawon, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(cekSoto, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
.addGap(37, 37, 37)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(textGudeg, javax.swing.GroupLayout.DEFAULT_SIZE, 85, Short.MAX_VALUE)
.addComponent(textRawon, javax.swing.GroupLayout.DEFAULT_SIZE, 85, Short.MAX_VALUE)
.addComponent(textBakso, javax.swing.GroupLayout.DEFAULT_SIZE, 85, Short.MAX_VALUE)
.addComponent(textSoto, javax.swing.GroupLayout.DEFAULT_SIZE, 85, Short.MAX_VALUE)
.addComponent(textHitung))))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(buttonHitung, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(buttonClear, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGap(47, 47, 47))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(38, 38, 38)
.addComponent(jLabel1)
.addGap(36, 36, 36)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(textSoto, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(cekSoto))
.addGap(3, 3, 3)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(cekRawon)
.addComponent(textRawon, 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(cekBakso)
.addComponent(textBakso, 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.LEADING)
.addComponent(cekGudeg)
.addComponent(textGudeg, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(6, 6, 6)
.addComponent(buttonHitung)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(textHitung, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(buttonClear))
.addContainerGap(46, Short.MAX_VALUE))
);

pack();
}// //GEN-END:initComponents

private void buttonClearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonClearActionPerformed
// TODO add your handling code here:
cekSoto.setSelected(false);
textSoto.setText("0");
textSoto.setEditable(false);
cekRawon.setSelected(false);
textRawon.setText("0");
textRawon.setEditable(false);
cekBakso.setSelected(false);
textBakso.setText("0");
textBakso.setEditable(false);
cekGudeg.setSelected(false);
textGudeg.setText("0");
textGudeg.setEditable(false);
}//GEN-LAST:event_buttonClearActionPerformed

@SuppressWarnings("static-access")
private void cekSotoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cekSotoActionPerformed
// TODO add your handling code here:
if (cekSoto.isSelected()== true){//GEN-LAST:event_cekSotoActionPerformed
//textSoto.enable(true);
textSoto.setEditable(true);
textSoto.setText("0");


} else {
//textSoto.enable(false);
textSoto.setEditable(false);
textSoto.setText("0");


}

}

private void cekRawonActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cekRawonActionPerformed
// TODO add your handling code here:
if (cekRawon.isSelected() == true) {
//textRawon.enable(true);
textRawon.setEditable(true);
textRawon.setText("0");


} else {
//textRawon.enable(false);
textRawon.setEditable(false);
textRawon.setText("0");

}
}//GEN-LAST:event_cekRawonActionPerformed

private void cekBaksoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cekBaksoActionPerformed
// TODO add your handling code here:
if (cekBakso.isSelected()) {
//textBakso.enable(true);
textBakso.setEditable(true);
textBakso.setText("0");

} else {
//textBakso.enable(false);
textBakso.setEditable(false);
textBakso.setText("0");
}
}//GEN-LAST:event_cekBaksoActionPerformed

private void cekGudegActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_cekGudegActionPerformed
// TODO add your handling code here:
if (cekGudeg.isSelected()) {
//textGudeg.enable(true);
textGudeg.setEditable(true);
textGudeg.setText("");

} else {
//textGudeg.enable(false);
textGudeg.setEditable(false);
textGudeg.setText("0");
}//GEN-LAST:event_cekGudegActionPerformed
}
private void buttonHitungActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_buttonHitungActionPerformed
// TODO add your handling code here:
double hitung = 0;

Double soto = (Double) ((Double.parseDouble(textSoto.getText())) * 5000);
Double rawon = (Double) ((Double.parseDouble(textRawon.getText())) * 6000);
Double Bakso = (Double) ((Double.parseDouble(textBakso.getText())) * 6000);
Double Gudeg = (Double) ((Double.parseDouble(textGudeg.getText())) * 6000);

hitung = soto + rawon + Bakso + Gudeg;
textHitung.setText(hitung + "");

}//GEN-LAST:event_buttonHitungActionPerformed

private void textSotoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_textSotoActionPerformed
// TODO add your handling code here:
}//GEN-LAST:event_textSotoActionPerformed

private void textHitungActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_textHitungActionPerformed
// TODO add your handling code here:
}//GEN-LAST:event_textHitungActionPerformed

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {

public void run() {
new MenuMakan().setVisible(true);
}
});

}

// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton buttonClear;
private javax.swing.JButton buttonHitung;
private javax.swing.JCheckBox cekBakso;
private javax.swing.JCheckBox cekGudeg;
private javax.swing.JCheckBox cekRawon;
private javax.swing.JCheckBox cekSoto;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JTextField textBakso;
private javax.swing.JTextField textGudeg;
private javax.swing.JTextField textHitung;
private javax.swing.JTextField textRawon;
private javax.swing.JTextField textSoto;
// End of variables declaration//GEN-END:variables
}


Semoga bermanfaat. . . Silahkan mencoba ^_^