Java Project – GUI Calculator with Source Code
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Program 1
/*
* 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.
*/
package dataflair;
/**
*
* @author admin
*/
public class Calculator extends javax.swing.JFrame {
double num1=0,num2=0;
double ans=0;
String operator;
public Calculator() {
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">//GEN-BEGIN:initComponents
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
txtoutput = new javax.swing.JTextField();
btn1 = new javax.swing.JButton();
btn2 = new javax.swing.JButton();
btn3 = new javax.swing.JButton();
btn4 = new javax.swing.JButton();
btn5 = new javax.swing.JButton();
btn6 = new javax.swing.JButton();
btn7 = new javax.swing.JButton();
btn8 = new javax.swing.JButton();
btn9 = new javax.swing.JButton();
btn0 = new javax.swing.JButton();
btnc = new javax.swing.JButton();
btndot = new javax.swing.JButton();
btnplus = new javax.swing.JButton();
btnminus = new javax.swing.JButton();
btnmulti = new javax.swing.JButton();
btndevide = new javax.swing.JButton();
btnce = new javax.swing.JButton();
btnequal = new javax.swing.JButton();
jCheckBox1 = new javax.swing.JCheckBox();
btnback = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Calculator ");
txtoutput.setEditable(false);
txtoutput.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
txtoutput.setHorizontalAlignment(javax.swing.JTextField.RIGHT);
btn1.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btn1.setText("1");
btn1.setToolTipText("");
btn1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn1ActionPerformed(evt);
}
});
btn2.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btn2.setText("2");
btn2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn2ActionPerformed(evt);
}
});
btn3.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btn3.setText("3");
btn3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn3ActionPerformed(evt);
}
});
btn4.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btn4.setText("4");
btn4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn4ActionPerformed(evt);
}
});
btn5.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btn5.setText("5");
btn5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn5ActionPerformed(evt);
}
});
btn6.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btn6.setText("6");
btn6.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn6ActionPerformed(evt);
}
});
btn7.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btn7.setText("7");
btn7.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn7ActionPerformed(evt);
}
});
btn8.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btn8.setText("8");
btn8.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn8ActionPerformed(evt);
}
});
btn9.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btn9.setText("9");
btn9.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn9ActionPerformed(evt);
}
});
btn0.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btn0.setText("0");
btn0.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btn0ActionPerformed(evt);
}
});
btnc.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btnc.setText("C");
btnc.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btncActionPerformed(evt);
}
});
btndot.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btndot.setText(".");
btndot.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btndotActionPerformed(evt);
}
});
btnplus.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btnplus.setText("+");
btnplus.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnplusActionPerformed(evt);
}
});
btnminus.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btnminus.setText("-");
btnminus.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnminusActionPerformed(evt);
}
});
btnmulti.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btnmulti.setText("*");
btnmulti.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnmultiActionPerformed(evt);
}
});
btndevide.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btndevide.setText("/");
btndevide.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btndevideActionPerformed(evt);
}
});
btnce.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btnce.setText("CE");
btnequal.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btnequal.setText("=");
btnequal.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnequalActionPerformed(evt);
}
});
jCheckBox1.setText("On/OFF");
jCheckBox1.addChangeListener(new javax.swing.event.ChangeListener() {
public void stateChanged(javax.swing.event.ChangeEvent evt) {
jCheckBox1StateChanged(evt);
}
});
btnback.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
btnback.setText("<");
btnback.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnbackActionPerformed(evt);
}
});
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(txtoutput))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(75, 75, 75)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(btn4, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btn5, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btn6, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(btn1, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(btn0, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btndot, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(btn2, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btn3, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)))))
.addGap(22, 22, 22))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(btn7, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btn8, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btn9, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(22, 22, 22))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(btnback)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btnce)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(btnc, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(19, 19, 19)))
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(btnplus, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(btnequal, javax.swing.GroupLayout.PREFERRED_SIZE, 125, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(btnminus, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnmulti, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btndevide, javax.swing.GroupLayout.PREFERRED_SIZE, 60, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(34, 34, 34)
.addComponent(jCheckBox1)))
.addGap(0, 170, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(txtoutput, javax.swing.GroupLayout.PREFERRED_SIZE, 55, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jCheckBox1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 112, Short.MAX_VALUE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btnc, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnce, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnback, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btn7, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btn8, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btn9, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btn4, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btn5, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btn6, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btn1, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btn2, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btn3, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(4, 4, 4)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btn0, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btndot, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(btndevide, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btnmulti, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(btnminus, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btnplus, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnequal, javax.swing.GroupLayout.PREFERRED_SIZE, 35, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap())))
);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void btn1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn1ActionPerformed
// TODO add your handling code here:
txtoutput.setText(txtoutput.getText()+"1");
}//GEN-LAST:event_btn1ActionPerformed
private void btn2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn2ActionPerformed
// TODO add your handling code here:
txtoutput.setText(txtoutput.getText()+"2");
}//GEN-LAST:event_btn2ActionPerformed
private void btn3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn3ActionPerformed
// TODO add your handling code here:
txtoutput.setText(txtoutput.getText()+"3");
}//GEN-LAST:event_btn3ActionPerformed
private void btn4ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn4ActionPerformed
// TODO add your handling code here:
txtoutput.setText(txtoutput.getText()+"4");
}//GEN-LAST:event_btn4ActionPerformed
private void btn5ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn5ActionPerformed
// TODO add your handling code here:
txtoutput.setText(txtoutput.getText()+"5");
}//GEN-LAST:event_btn5ActionPerformed
private void btn6ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn6ActionPerformed
// TODO add your handling code here:
txtoutput.setText(txtoutput.getText()+"6");
}//GEN-LAST:event_btn6ActionPerformed
private void btn7ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn7ActionPerformed
// TODO add your handling code here:
txtoutput.setText(txtoutput.getText()+"7");
}//GEN-LAST:event_btn7ActionPerformed
private void btn8ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn8ActionPerformed
// TODO add your handling code here:
txtoutput.setText(txtoutput.getText()+"8");
}//GEN-LAST:event_btn8ActionPerformed
private void btn9ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn9ActionPerformed
// TODO add your handling code here:
txtoutput.setText(txtoutput.getText()+"9");
}//GEN-LAST:event_btn9ActionPerformed
private void btn0ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btn0ActionPerformed
// TODO add your handling code here:
txtoutput.setText(txtoutput.getText()+"0");
}//GEN-LAST:event_btn0ActionPerformed
private void btndotActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btndotActionPerformed
// TODO add your handling code here:
txtoutput.setText(txtoutput.getText()+".");
}//GEN-LAST:event_btndotActionPerformed
private void btncActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btncActionPerformed
// TODO add your handling code here:
txtoutput.setText("");
}//GEN-LAST:event_btncActionPerformed
private void btnplusActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnplusActionPerformed
// TODO add your handling code here:
//txtoutput.setText(txtoutput.getText()+"+");
num1=Double.parseDouble(txtoutput.getText());
txtoutput.setText("");
operator="+";
}//GEN-LAST:event_btnplusActionPerformed
private void btnminusActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnminusActionPerformed
// TODO add your handling code here:
//txtoutput.setText(txtoutput.getText()+"-");
num1=Double.parseDouble(txtoutput.getText());
txtoutput.setText("");
operator="-";
}//GEN-LAST:event_btnminusActionPerformed
private void btnmultiActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnmultiActionPerformed
// TODO add your handling code here:
//txtoutput.setText(txtoutput.getText()+"*");
num1=Double.parseDouble(txtoutput.getText());
txtoutput.setText("");
operator="*";
}//GEN-LAST:event_btnmultiActionPerformed
private void btndevideActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btndevideActionPerformed
// TODO add your handling code here:
// txtoutput.setText(txtoutput.getText()+"/");
num1=Double.parseDouble(txtoutput.getText());
txtoutput.setText("");
operator="/";
}//GEN-LAST:event_btndevideActionPerformed
private void jCheckBox1StateChanged(javax.swing.event.ChangeEvent evt) {//GEN-FIRST:event_jCheckBox1StateChanged
// TODO add your handling code here:
if(jCheckBox1.isSelected())
disablecalc();
else
enablecalc();
}//GEN-LAST:event_jCheckBox1StateChanged
private void btnbackActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnbackActionPerformed
// TODO add your handling code here:
int txtlength=txtoutput.getText().length();
int txtnumber=txtoutput.getText().length()-1;
if(txtlength>0)
{
StringBuilder sb=new StringBuilder(txtoutput.getText());
sb.deleteCharAt(txtnumber);
String str;
str=sb.toString();
txtoutput.setText(str);
}
}//GEN-LAST:event_btnbackActionPerformed
private void btnequalActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnequalActionPerformed
// TODO add your handling code here:
num2=Double.parseDouble(txtoutput.getText());
switch(operator)
{
case "+":
ans=num1+num2;break;
case "-":
ans=num1-num2;break;
case "*":
ans=num1*num2;break;
case "/":
ans=num1/num2;break;
}
txtoutput.setText(Double.toString(ans));
ans=0;
operator=null;
}//GEN-LAST:event_btnequalActionPerformed
public void disablecalc()
{
btn0.setEnabled(false);
btn1.setEnabled(false);
btn2.setEnabled(false);
btn3.setEnabled(false);
btn4.setEnabled(false);
btn5.setEnabled(false);
btn6.setEnabled(false);
btn7.setEnabled(false);
btn8.setEnabled(false);
btn9.setEnabled(false);
btndot.setEnabled(false);
btnplus.setEnabled(false);
btnminus.setEnabled(false);
btndevide.setEnabled(false);
btnmulti.setEnabled(false);
btnequal.setEnabled(false);
btnc.setEnabled(false);
btnce.setEnabled(false);
}
public void enablecalc()
{
btn0.setEnabled(true);
btn1.setEnabled(true);
btn2.setEnabled(true);
btn3.setEnabled(true);
btn4.setEnabled(true);
btn5.setEnabled(true);
btn6.setEnabled(true);
btn7.setEnabled(true);
btn8.setEnabled(true);
btn9.setEnabled(true);
btndot.setEnabled(true);
btnplus.setEnabled(true);
btnminus.setEnabled(true);
btndevide.setEnabled(true);
btnmulti.setEnabled(true);
btnequal.setEnabled(true);
btnc.setEnabled(true);
btnce.setEnabled(true);
}
/**
* @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(Calculator.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Calculator.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Calculator.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Calculator.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 Calculator().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton btn0;
private javax.swing.JButton btn1;
private javax.swing.JButton btn2;
private javax.swing.JButton btn3;
private javax.swing.JButton btn4;
private javax.swing.JButton btn5;
private javax.swing.JButton btn6;
private javax.swing.JButton btn7;
private javax.swing.JButton btn8;
private javax.swing.JButton btn9;
private javax.swing.JButton btnback;
private javax.swing.JButton btnc;
private javax.swing.JButton btnce;
private javax.swing.JButton btndevide;
private javax.swing.JButton btndot;
private javax.swing.JButton btnequal;
private javax.swing.JButton btnminus;
private javax.swing.JButton btnmulti;
private javax.swing.JButton btnplus;
private javax.swing.JCheckBox jCheckBox1;
private javax.swing.JPanel jPanel1;
private javax.swing.JTextField txtoutput;
// End of variables declaration//GEN-END:variables
}
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