Program Kalkulator Sederhana dengan menggunakan JFrame :
1. kode program kalkulator sederhana :
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author pc
*/
public class tampilankalkulator extends javax.swing.JFrame {
String angka;
double jumlah,angka1,angka2;
int pilih;
private Object integer;
/**
* Creates new form tampilankalkulator
*/
public tampilankalkulator() {
initComponents();
angka="";
}
/**
* 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() {
display = new javax.swing.JTextField();
btnHapus = new javax.swing.JButton();
btnBagi = new javax.swing.JButton();
btnAngka7 = new javax.swing.JButton();
btnAngka9 = new javax.swing.JButton();
btnAngka8 = new javax.swing.JButton();
btnKali = new javax.swing.JButton();
btnAngka4 = new javax.swing.JButton();
btnAngka5 = new javax.swing.JButton();
btnAngka6 = new javax.swing.JButton();
btnKurang = new javax.swing.JButton();
btnAngka1 = new javax.swing.JButton();
btnAngka2 = new javax.swing.JButton();
btnAngka3 = new javax.swing.JButton();
btnTambah = new javax.swing.JButton();
btnsamadengan = new javax.swing.JButton();
btnKoma = new javax.swing.JButton();
btnAngka0 = new javax.swing.JButton();
jLabel2 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setBackground(new java.awt.Color(255, 255, 255));
setResizable(false);
display.setEditable(false);
display.setBackground(new java.awt.Color(255, 255, 255));
display.setForeground(new java.awt.Color(0, 0, 153));
display.setHorizontalAlignment(javax.swing.JTextField.RIGHT);
display.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
displayActionPerformed(evt);
}
});
btnHapus.setBackground(new java.awt.Color(255, 255, 204));
btnHapus.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
btnHapus.setText("C");
btnHapus.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnHapusActionPerformed(evt);
}
});
btnBagi.setBackground(new java.awt.Color(255, 255, 204));
btnBagi.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
btnBagi.setText("/");
btnBagi.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnBagiActionPerformed(evt);
}
});
btnAngka7.setBackground(new java.awt.Color(255, 255, 204));
btnAngka7.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
btnAngka7.setText("7");
btnAngka7.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnAngka7ActionPerformed(evt);
}
});
btnAngka9.setBackground(new java.awt.Color(255, 255, 204));
btnAngka9.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
btnAngka9.setText("9");
btnAngka9.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnAngka9ActionPerformed(evt);
}
});
btnAngka8.setBackground(new java.awt.Color(255, 255, 204));
btnAngka8.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
btnAngka8.setText("8");
btnAngka8.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnAngka8ActionPerformed(evt);
}
});
btnKali.setBackground(new java.awt.Color(255, 255, 204));
btnKali.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
btnKali.setText("*");
btnKali.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnKaliActionPerformed(evt);
}
});
btnAngka4.setBackground(new java.awt.Color(255, 255, 204));
btnAngka4.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
btnAngka4.setText("4");
btnAngka4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnAngka4ActionPerformed(evt);
}
});
btnAngka5.setBackground(new java.awt.Color(255, 255, 204));
btnAngka5.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
btnAngka5.setText("5");
btnAngka5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnAngka5ActionPerformed(evt);
}
});
btnAngka6.setBackground(new java.awt.Color(255, 255, 204));
btnAngka6.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
btnAngka6.setText("6");
btnAngka6.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnAngka6ActionPerformed(evt);
}
});
btnKurang.setBackground(new java.awt.Color(255, 255, 204));
btnKurang.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
btnKurang.setForeground(new java.awt.Color(0, 0, 153));
btnKurang.setText("-");
btnKurang.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnKurangActionPerformed(evt);
}
});
btnAngka1.setBackground(new java.awt.Color(255, 255, 204));
btnAngka1.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
btnAngka1.setText("1");
btnAngka1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnAngka1ActionPerformed(evt);
}
});
btnAngka2.setBackground(new java.awt.Color(255, 255, 204));
btnAngka2.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
btnAngka2.setText("2");
btnAngka2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnAngka2ActionPerformed(evt);
}
});
btnAngka3.setBackground(new java.awt.Color(255, 255, 204));
btnAngka3.setFont(new java.awt.Font("Times New Roman", 1, 14)); // NOI18N
btnAngka3.setText("3");
btnAngka3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnAngka3ActionPerformed(evt);
}
});
btnTambah.setBackground(new java.awt.Color(255, 255, 204));
btnTambah.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
btnTambah.setText("+");
btnTambah.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnTambahActionPerformed(evt);
}
});
btnsamadengan.setBackground(new java.awt.Color(255, 255, 204));
btnsamadengan.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
btnsamadengan.setText("=");
btnsamadengan.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnsamadenganActionPerformed(evt);
}
});
btnKoma.setBackground(new java.awt.Color(255, 255, 204));
btnKoma.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
btnKoma.setText(".");
btnKoma.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnKomaActionPerformed(evt);
}
});
btnAngka0.setBackground(new java.awt.Color(255, 255, 204));
btnAngka0.setFont(new java.awt.Font("Tahoma", 1, 14)); // NOI18N
btnAngka0.setText("0");
btnAngka0.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnAngka0ActionPerformed(evt);
}
});
jLabel2.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jLabel2.setText("KALKULATOR");
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(10, 10, 10)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(layout.createSequentialGroup()
.addComponent(btnHapus, javax.swing.GroupLayout.PREFERRED_SIZE, 189, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(6, 6, 6)
.addComponent(btnBagi, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(btnAngka7, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(6, 6, 6)
.addComponent(btnAngka8, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(6, 6, 6)
.addComponent(btnAngka9, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(6, 6, 6)
.addComponent(btnKali, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(btnAngka4, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(6, 6, 6)
.addComponent(btnAngka5, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(6, 6, 6)
.addComponent(btnAngka6, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(6, 6, 6)
.addComponent(btnKurang, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(btnAngka1, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnAngka0, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(6, 6, 6)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(btnAngka2, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnKoma, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(6, 6, 6)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(btnAngka3, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnsamadengan, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(6, 6, 6)
.addComponent(btnTambah, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(display))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(layout.createSequentialGroup()
.addGap(76, 76, 76)
.addComponent(jLabel2)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(10, 10, 10)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(display, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(6, 6, 6)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(btnHapus, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnBagi, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(11, 11, 11)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(btnAngka7, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnAngka8, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnAngka9, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnKali, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(6, 6, 6)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(btnAngka4, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnAngka5, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnAngka6, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnKurang, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(6, 6, 6)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(btnAngka1, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(5, 5, 5)
.addComponent(btnAngka0, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(btnAngka2, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(5, 5, 5)
.addComponent(btnKoma, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(btnAngka3, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(5, 5, 5)
.addComponent(btnsamadengan, javax.swing.GroupLayout.PREFERRED_SIZE, 40, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(btnTambah, javax.swing.GroupLayout.PREFERRED_SIZE, 85, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void btnAngka1ActionPerformed(java.awt.event.ActionEvent evt) {
angka = "1";
display.setText(angka);// TODO add your handling code here:
}
private void btnAngka2ActionPerformed(java.awt.event.ActionEvent evt) {
angka = "2";
display.setText(angka); // TODO add your handling code here:
}
private void btnAngka3ActionPerformed(java.awt.event.ActionEvent evt) {
angka = "3";
display.setText(angka); // TODO add your handling code here:
}
private void btnAngka4ActionPerformed(java.awt.event.ActionEvent evt) {
angka = "4";
display.setText(angka); // TODO add your handling code here:
}
private void btnAngka5ActionPerformed(java.awt.event.ActionEvent evt) {
angka = "5";
display.setText(angka); // TODO add your handling code here:
}
private void btnAngka6ActionPerformed(java.awt.event.ActionEvent evt) {
angka = "6";
display.setText(angka); // TODO add your handling code here:
}
private void btnAngka7ActionPerformed(java.awt.event.ActionEvent evt) {
angka = "7";
display.setText(angka); // TODO add your handling code here:
}
private void btnAngka8ActionPerformed(java.awt.event.ActionEvent evt) {
angka = "8";
display.setText(angka); // TODO add your handling code here:
}
private void btnAngka9ActionPerformed(java.awt.event.ActionEvent evt) {
angka = "9";
display.setText(angka); // TODO add your handling code here:
}
private void btnAngka0ActionPerformed(java.awt.event.ActionEvent evt) {
angka = "0";
display.setText(angka); // TODO add your handling code here:
}
private void btnKomaActionPerformed(java.awt.event.ActionEvent evt) {
angka = ".";
display.setText(angka); // TODO add your handling code here:
}
private void btnHapusActionPerformed(java.awt.event.ActionEvent evt) {
display.setText("");
angka1=0.0;
angka2=0.0;
jumlah=0.0;
angka="";// TODO add your handling code here:
}
private void btnTambahActionPerformed(java.awt.event.ActionEvent evt) {
angka1=Double.parseDouble(angka);
display.setText("+");
angka="";
pilih=1;// TODO add your handling code here:
}
private void btnKurangActionPerformed(java.awt.event.ActionEvent evt) {
angka1=Double.parseDouble(angka);
display.setText("-");
angka="";
pilih=2; // TODO add your handling code here:
}
private void btnKaliActionPerformed(java.awt.event.ActionEvent evt) {
angka1=Integer.parseInt(angka);
display.setText("*");
angka="";
pilih=3; // TODO add your handling code here:
}
private void btnBagiActionPerformed(java.awt.event.ActionEvent evt) {
angka1=Double.parseDouble(angka);
display.setText("/");
angka="";
pilih=4; // TODO add your handling code here:
}
private void btnsamadenganActionPerformed(java.awt.event.ActionEvent evt) {
switch(pilih){
case 1:
angka2 = Integer.parseInt(angka);
jumlah = angka1 + angka2;
angka = Double.toString(jumlah);
display.setText(angka);
break;
case 2:
angka2 = Double.parseDouble(angka);
jumlah = angka1 - angka2;
angka = Double.toString(jumlah);
display.setText(angka);
break;
case 3:
angka2 = Integer.parseInt(angka);
jumlah = angka1 * angka2;
angka = Double.toString(jumlah);
display.setText(angka);
break;
case 4:
angka2 = Integer.parseInt(angka);
jumlah = angka1 / angka2;
angka = Double.toString(jumlah);
display.setText(angka);
break;
default:
break;
}
// TODO add your handling code here:
}
private void displayActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
/**
* @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(tampilankalkulator.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(tampilankalkulator.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(tampilankalkulator.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(tampilankalkulator.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 tampilankalkulator().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton btnAngka0;
private javax.swing.JButton btnAngka1;
private javax.swing.JButton btnAngka2;
private javax.swing.JButton btnAngka3;
private javax.swing.JButton btnAngka4;
private javax.swing.JButton btnAngka5;
private javax.swing.JButton btnAngka6;
private javax.swing.JButton btnAngka7;
private javax.swing.JButton btnAngka8;
private javax.swing.JButton btnAngka9;
private javax.swing.JButton btnBagi;
private javax.swing.JButton btnHapus;
private javax.swing.JButton btnKali;
private javax.swing.JButton btnKoma;
private javax.swing.JButton btnKurang;
private javax.swing.JButton btnTambah;
private javax.swing.JButton btnsamadengan;
private javax.swing.JTextField display;
private javax.swing.JLabel jLabel2;
// End of variables declaration
}
DIbawah ini adalah hasil dari output/keluaran dari program kalkulator tersebut setelah dijalankan :
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