我正在制作一个计算器，但是我看不出想要把我的txtDisplay和我的getOperator显示出来的东西，这是我第一次发布时的错误
public class Calculater1 extends javax.swing.JFrame {
/**
* Creates new form Calculater
*/
private double total1 = 0.0;
private double total2 = 0.0;
private char math_operator;
public Calculater1() {
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() {
txtDisplay = new javax.swing.JTextField();
jPanel1 = new javax.swing.JPanel();
BtnOne = new javax.swing.JButton();
BtnTwo = new javax.swing.JButton();
BtnThree = new javax.swing.JButton();
BtnFour = new javax.swing.JButton();
BtnFive = new javax.swing.JButton();
BtnSix = new javax.swing.JButton();
BtnSeven = new javax.swing.JButton();
BtnEight = new javax.swing.JButton();
BtnNine = new javax.swing.JButton();
BtnZero = new javax.swing.JButton();
jPanel2 = new javax.swing.JPanel();
BtnAdd = new javax.swing.JButton();
BtnSubtract = new javax.swing.JButton();
BtnMutiply = new javax.swing.JButton();
BtnDivide = new javax.swing.JButton();
BtnClear = new javax.swing.JButton();
BtnEqual = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Calculator");
txtDisplay.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
txtDisplayActionPerformed(evt);
}
});
BtnOne.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
BtnOne.setText("1");
BtnOne.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnOneActionPerformed(evt);
}
});
BtnTwo.setText("2");
BtnTwo.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnTwoActionPerformed(evt);
}
});
BtnThree.setText("3");
BtnThree.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnThreeActionPerformed(evt);
}
});
BtnFour.setText("4");
BtnFour.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnFourActionPerformed(evt);
}
});
BtnFive.setText("5");
BtnFive.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnFiveActionPerformed(evt);
}
});
BtnSix.setText("6");
BtnSix.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnSixActionPerformed(evt);
}
});
BtnSeven.setText("7");
BtnSeven.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnSevenActionPerformed(evt);
}
});
BtnEight.setText("8");
BtnEight.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnEightActionPerformed(evt);
}
});
BtnNine.setText("9");
BtnNine.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnNineActionPerformed(evt);
}
});
BtnZero.setText("0");
BtnZero.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnZeroActionPerformed(evt);
}
});
BtnAdd.setText("+");
BtnAdd.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnAddActionPerformed(evt);
}
});
BtnSubtract.setText("-");
BtnSubtract.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnSubtractActionPerformed(evt);
}
});
BtnMutiply.setText("*");
BtnMutiply.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnMutiplyActionPerformed(evt);
}
});
BtnDivide.setText("/");
BtnDivide.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnDivideActionPerformed(evt);
}
});
BtnClear.setText("C");
BtnClear.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnClearActionPerformed(evt);
}
});
BtnEqual.setText("=");
BtnEqual.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnEqualActionPerformed(evt);
}
});
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(BtnAdd)
.addComponent(BtnSubtract)
.addComponent(BtnMutiply)
.addComponent(BtnDivide)
.addComponent(BtnClear)
.addComponent(BtnEqual))
.addGap(0, 27, Short.MAX_VALUE))
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(29, 29, 29)
.addComponent(BtnAdd)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnSubtract)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnMutiply)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(BtnDivide)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnClear)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(BtnEqual)
.addContainerGap(14, Short.MAX_VALUE))
);
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()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(BtnThree, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(BtnZero, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(BtnSix, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnNine, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(BtnOne, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnFour, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnSeven, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(BtnTwo, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnFive, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnEight, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(38, 38, 38)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(BtnSeven, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnFour, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnOne, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(9, 9, 9)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(BtnFive, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnEight, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnTwo, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(BtnSix, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnNine, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnThree, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(BtnZero, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 0, Short.MAX_VALUE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addContainerGap())
);
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(127, 127, 127)
.addComponent(txtDisplay, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(143, Short.MAX_VALUE)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(19, 19, 19))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(24, 24, 24)
.addComponent(txtDisplay, javax.swing.GroupLayout.PREFERRED_SIZE, 36, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void txtDisplayActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_txtDisplayActionPerformed
}//GEN-LAST:event_txtDisplayActionPerformed
private void BtnNineActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnNineActionPerformed
String BtnNineText = txtDisplay.getText() + BtnNine.getText();
txtDisplay.setText( BtnNineText );
}//GEN-LAST:event_BtnNineActionPerformed
private void BtnEightActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnEightActionPerformed
String BtnEightText = txtDisplay.getText() + BtnEight.getText();
txtDisplay.setText( BtnEightText );
}//GEN-LAST:event_BtnEightActionPerformed
private void BtnOneActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnOneActionPerformed
String BtnOneText = txtDisplay.getText() + BtnOne.getText();
txtDisplay.setText( BtnOneText );
}//GEN-LAST:event_BtnOneActionPerformed
private void BtnTwoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnTwoActionPerformed
String BtnTwoText = txtDisplay.getText() + BtnTwo.getText();
txtDisplay.setText( BtnTwoText );
}//GEN-LAST:event_BtnTwoActionPerformed
private void BtnThreeActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnThreeActionPerformed
String BtnThreeText = txtDisplay.getText() + BtnThree.getText();
txtDisplay.setText( BtnThreeText );
}//GEN-LAST:event_BtnThreeActionPerformed
private void BtnFourActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnFourActionPerformed
String BtnFourText = txtDisplay.getText() + BtnFour.getText();
txtDisplay.setText( BtnFourText );
}//GEN-LAST:event_BtnFourActionPerformed
private void BtnFiveActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnFiveActionPerformed
String BtnFiveText = txtDisplay.getText() + BtnFive.getText();
txtDisplay.setText( BtnFiveText );
}//GEN-LAST:event_BtnFiveActionPerformed
private void BtnSixActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnSixActionPerformed
String BtnSixText = txtDisplay.getText() + BtnSix.getText();
txtDisplay.setText( BtnSixText );
}//GEN-LAST:event_BtnSixActionPerformed
private void BtnSevenActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnSevenActionPerformed
String BtnSevenText = txtDisplay.getText() + BtnSeven.getText();
txtDisplay.setText( BtnSevenText );
}//GEN-LAST:event_BtnSevenActionPerformed
private void BtnZeroActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnZeroActionPerformed
String BtnZeroText = txtDisplay.getText() + BtnZero.getText();
txtDisplay.setText( BtnZeroText );
}//GEN-LAST:event_BtnZeroActionPerformed
private void BtnAddActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnAddActionPerformed
String button_text = BtnAdd.getText();
getOperator(button_text);
}//GEN-LAST:event_BtnAddActionPerformed
private void BtnEqualActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnEqualActionPerformed
switch ( math_operator ) {
case '+':
total2 = total1 + Double.parseDouble(txtDisplay.getText( ) );
break;
case '-':
total2 = total1 + Double.parseDouble(txtDisplay.getText( ) );
break;
case '/':
total2 = total1 + Double.parseDouble(txtDisplay.getText( ) );
break;
case '*':
total2 = total1 + Double.parseDouble(txtDisplay.getText( ) );
break;
}
txtDisplay.setText( Double.toString(total2) );
total1 = 0;
}//GEN-LAST:event_BtnEqualActionPerformed
private void BtnClearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnClearActionPerformed
total2 = 0;
txtDisplay.setText("");
}//GEN-LAST:event_BtnClearActionPerformed
private void BtnSubtractActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnSubtractActionPerformed
String button_text = BtnSubtract.getText();
getOperator(button_text);
}//GEN-LAST:event_BtnSubtractActionPerformed
private void BtnDivideActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnDivideActionPerformed
String button_text = BtnDivide.getText();
getOperator(button_text);
}//GEN-LAST:event_BtnDivideActionPerformed
private void BtnMutiplyActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnMutiplyActionPerformed
String button_text = BtnMutiply.getText();
getOperator(button_text);
}//GEN-LAST:event_BtnMutiplyActionPerformed
/**
* @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(Calculater.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(Calculater.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(Calculater.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(Calculater.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 Calculater().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton BtnAdd;
private javax.swing.JButton BtnClear;
private javax.swing.JButton BtnDivide;
private javax.swing.JButton BtnEight;
private javax.swing.JButton BtnEqual;
private javax.swing.JButton BtnFive;
private javax.swing.JButton BtnFour;
private javax.swing.JButton BtnMutiply;
private javax.swing.JButton BtnNine;
private javax.swing.JButton BtnOne;
private javax.swing.JButton BtnSeven;
private javax.swing.JButton BtnSix;
private javax.swing.JButton BtnSubtract;
private javax.swing.JButton BtnThree;
private javax.swing.JButton BtnTwo;
private javax.swing.JButton BtnZero;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JTextField txtDisplay;
// End of variables declaration//GEN-END:variables
}
答案 0 :(得分：0)
我将帮助你..只有我将使用这么多代码作为例子。我所做的是使用JavaScript引擎来评估表达式。现在您不需要单独保存运算符和opperands。此外，您不再需要携带total1或total2变量。显示包含整个表达式。
import javax.script.ScriptEngineManager;
import javax.script.ScriptEngine;
public class Calculator extends javax.swing.JFrame {
/**
* Creates new form Calculator
*/
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() {
txtDisplay = new javax.swing.JTextField();
jPanel1 = new javax.swing.JPanel();
BtnOne = new javax.swing.JButton();
BtnTwo = new javax.swing.JButton();
BtnThree = new javax.swing.JButton();
BtnFour = new javax.swing.JButton();
BtnFive = new javax.swing.JButton();
BtnSix = new javax.swing.JButton();
BtnSeven = new javax.swing.JButton();
BtnEight = new javax.swing.JButton();
BtnNine = new javax.swing.JButton();
BtnZero = new javax.swing.JButton();
jPanel2 = new javax.swing.JPanel();
BtnAdd = new javax.swing.JButton();
BtnSubtract = new javax.swing.JButton();
BtnMutiply = new javax.swing.JButton();
BtnDivide = new javax.swing.JButton();
BtnClear = new javax.swing.JButton();
BtnEqual = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Calculator");
txtDisplay.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
txtDisplayActionPerformed(evt);
}
});
BtnOne.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
BtnOne.setText("1");
BtnOne.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnOneActionPerformed(evt);
}
});
BtnTwo.setText("2");
BtnTwo.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnTwoActionPerformed(evt);
}
});
BtnThree.setText("3");
BtnThree.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnThreeActionPerformed(evt);
}
});
BtnFour.setText("4");
BtnFour.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnFourActionPerformed(evt);
}
});
BtnFive.setText("5");
BtnFive.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnFiveActionPerformed(evt);
}
});
BtnSix.setText("6");
BtnSix.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnSixActionPerformed(evt);
}
});
BtnSeven.setText("7");
BtnSeven.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnSevenActionPerformed(evt);
}
});
BtnEight.setText("8");
BtnEight.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnEightActionPerformed(evt);
}
});
BtnNine.setText("9");
BtnNine.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnNineActionPerformed(evt);
}
});
BtnZero.setText("0");
BtnZero.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnZeroActionPerformed(evt);
}
});
BtnAdd.setText("+");
BtnAdd.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnAddActionPerformed(evt);
}
});
BtnSubtract.setText("-");
BtnSubtract.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnSubtractActionPerformed(evt);
}
});
BtnMutiply.setText("*");
BtnMutiply.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnMutiplyActionPerformed(evt);
}
});
BtnDivide.setText("/");
BtnDivide.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnDivideActionPerformed(evt);
}
});
BtnClear.setText("C");
BtnClear.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnClearActionPerformed(evt);
}
});
BtnEqual.setText("=");
BtnEqual.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
BtnEqualActionPerformed(evt);
}
});
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(BtnAdd)
.addComponent(BtnSubtract)
.addComponent(BtnMutiply)
.addComponent(BtnDivide)
.addComponent(BtnClear)
.addComponent(BtnEqual))
.addGap(0, 27, Short.MAX_VALUE))
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGap(29, 29, 29)
.addComponent(BtnAdd)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnSubtract)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnMutiply)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(BtnDivide)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnClear)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(BtnEqual)
.addContainerGap(14, Short.MAX_VALUE))
);
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()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(BtnThree, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(BtnZero, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(BtnSix, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnNine, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(BtnOne, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnFour, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnSeven, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(BtnTwo, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnFive, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(BtnEight, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(38, 38, 38)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(BtnSeven, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnFour, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnOne, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(9, 9, 9)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(BtnFive, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnEight, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnTwo, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(BtnSix, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnNine, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(BtnThree, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(BtnZero, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 0, Short.MAX_VALUE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addContainerGap())
);
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(127, 127, 127)
.addComponent(txtDisplay, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(143, Short.MAX_VALUE)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(19, 19, 19))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(24, 24, 24)
.addComponent(txtDisplay, javax.swing.GroupLayout.PREFERRED_SIZE, 36, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void txtDisplayActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_txtDisplayActionPerformed
}//GEN-LAST:event_txtDisplayActionPerformed
private void BtnNineActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnNineActionPerformed
String BtnNineText = txtDisplay.getText() + BtnNine.getText();
txtDisplay.setText( BtnNineText );
}//GEN-LAST:event_BtnNineActionPerformed
private void BtnEightActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnEightActionPerformed
String BtnEightText = txtDisplay.getText() + BtnEight.getText();
txtDisplay.setText( BtnEightText );
}//GEN-LAST:event_BtnEightActionPerformed
private void BtnOneActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnOneActionPerformed
String BtnOneText = txtDisplay.getText() + BtnOne.getText();
txtDisplay.setText( BtnOneText );
}//GEN-LAST:event_BtnOneActionPerformed
private void BtnTwoActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnTwoActionPerformed
String BtnTwoText = txtDisplay.getText() + BtnTwo.getText();
txtDisplay.setText( BtnTwoText );
}//GEN-LAST:event_BtnTwoActionPerformed
private void BtnThreeActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnThreeActionPerformed
String BtnThreeText = txtDisplay.getText() + BtnThree.getText();
txtDisplay.setText( BtnThreeText );
}//GEN-LAST:event_BtnThreeActionPerformed
private void BtnFourActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnFourActionPerformed
String BtnFourText = txtDisplay.getText() + BtnFour.getText();
txtDisplay.setText( BtnFourText );
}//GEN-LAST:event_BtnFourActionPerformed
private void BtnFiveActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnFiveActionPerformed
String BtnFiveText = txtDisplay.getText() + BtnFive.getText();
txtDisplay.setText( BtnFiveText );
}//GEN-LAST:event_BtnFiveActionPerformed
private void BtnSixActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnSixActionPerformed
String BtnSixText = txtDisplay.getText() + BtnSix.getText();
txtDisplay.setText( BtnSixText );
}//GEN-LAST:event_BtnSixActionPerformed
private void BtnSevenActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnSevenActionPerformed
String BtnSevenText = txtDisplay.getText() + BtnSeven.getText();
txtDisplay.setText( BtnSevenText );
}//GEN-LAST:event_BtnSevenActionPerformed
private void BtnZeroActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnZeroActionPerformed
String BtnZeroText = txtDisplay.getText() + BtnZero.getText();
txtDisplay.setText( BtnZeroText );
}//GEN-LAST:event_BtnZeroActionPerformed
private void BtnAddActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnAddActionPerformed
String button_text = BtnAdd.getText();
getOperator(button_text);
}//GEN-LAST:event_BtnAddActionPerformed
private void getOperator(String str)
{
txtDisplay.setText( txtDisplay.getText() + str );
}
private void BtnEqualActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnEqualActionPerformed
ScriptEngineManager mgr = new ScriptEngineManager();
ScriptEngine engine = mgr.getEngineByName("JavaScript");
try
{
txtDisplay.setText((engine.eval(txtDisplay.getText())).toString());
}
catch(javax.script.ScriptException se)
{
txtDisplay.setText("Error evaluating: " + txtDisplay.getText());
}
}//GEN-LAST:event_BtnEqualActionPerformed
private void BtnClearActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnClearActionPerformed
txtDisplay.setText("");
}//GEN-LAST:event_BtnClearActionPerformed
private void BtnSubtractActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnSubtractActionPerformed
String button_text = BtnSubtract.getText();
getOperator(button_text);
}//GEN-LAST:event_BtnSubtractActionPerformed
private void BtnDivideActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnDivideActionPerformed
String button_text = BtnDivide.getText();
getOperator(button_text);
}//GEN-LAST:event_BtnDivideActionPerformed
private void BtnMutiplyActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_BtnMutiplyActionPerformed
String button_text = BtnMutiply.getText();
getOperator(button_text);
}//GEN-LAST:event_BtnMutiplyActionPerformed
/**
* @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 BtnAdd;
private javax.swing.JButton BtnClear;
private javax.swing.JButton BtnDivide;
private javax.swing.JButton BtnEight;
private javax.swing.JButton BtnEqual;
private javax.swing.JButton BtnFive;
private javax.swing.JButton BtnFour;
private javax.swing.JButton BtnMutiply;
private javax.swing.JButton BtnNine;
private javax.swing.JButton BtnOne;
private javax.swing.JButton BtnSeven;
private javax.swing.JButton BtnSix;
private javax.swing.JButton BtnSubtract;
private javax.swing.JButton BtnThree;
private javax.swing.JButton BtnTwo;
private javax.swing.JButton BtnZero;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JTextField txtDisplay;
// End of variables declaration//GEN-END:variables
}
答案 1 :(得分：0)
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class Calculator implements ActionListener
{
JFrame f;
JTextField tf;
JButton num[];
JButton btNum0;
JButton btEqual;
JButton btAdd;
JButton btSubtract;
JButton btMultiply;
JButton btDivide;
JButton btSolve;
JButton btClear;
JButton btDot;
JButton btExponent;
double TEMP;
double SolveTEMP;
String display="";
Boolean addBool = false ;
Boolean subBool = false ;
Boolean divBool = false ;
Boolean mulBool = false ;
Boolean expBool = false ;
Calculator(String s)
{
String number[]={"1","2","3","4","5","6","7","8","9"};
int m=0;
int x[]={30,80,130};
int y[]={205,155,105};
f=new JFrame(s);
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch(Exception e) {
System.out.println("Error setting native LAF: " + e);
}
JLabel l=new JLabel("Welcome To ZeeCalc Calculator.. :)");
l.setBounds(30,10,240,40);
f.add(l);
tf=new JTextField();
num=new JButton[number.length];
tf.setBounds(30,50,240,40);
f.add(tf);
tf.setEditable(false);
for(int j=0;j<x.length;j++)
{
for(int i=0;i<y.length;i++)
{
if(m<num.length)
{
num[m]=new JButton(String.valueOf(m+1));
num[m].setBounds(x[i],y[j],45,45);
f.add(num[m]);
}
m++;
}
}
btNum0=new JButton("0");
btNum0.setBounds(30,255,95,45);
f.add(btNum0);
btAdd=new JButton("+");
btAdd.setBounds(180,255,45,45);
f.add(btAdd);
btSubtract=new JButton("-");
btSubtract.setBounds(180,205,45,45);
f.add(btSubtract);
btMultiply=new JButton("*");
btMultiply.setBounds(180,155,45,45);
f.add(btMultiply);
btDot=new JButton(".");
btDot.setBounds(230,155,45,45);
f.add(btDot);
btDivide=new JButton("/");
btDivide.setBounds(180,105,45,45);
f.add(btDivide);
btExponent=new JButton("^");
btExponent.setBounds(230,105,45,45);
f.add(btExponent);
btSolve=new JButton("=");
btSolve.setBounds(230,205,45,95);
f.add(btSolve);
btClear=new JButton("C");
btClear.setBounds(130,255,45,45);
f.add(btClear);
m=0;
for(int i=0;i<x.length;i++)
{
for(int j=0;j<y.length;j++)
{
if(m<num.length)
{
num[m].addActionListener(this);
}
m++;
}
}
btNum0.addActionListener(this);
btAdd.addActionListener(this);
btSubtract.addActionListener(this);
btMultiply.addActionListener(this);
btDivide.addActionListener(this);
btSolve.addActionListener(new Operations());
btClear.addActionListener(this);
btDot.addActionListener(this);
btExponent.addActionListener(this);
f.setLayout(null);
f.setSize(310,360);
f.setVisible(true);
f.setResizable(false);
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
}
public void actionPerformed(ActionEvent e)
{
if(e.getSource()==num[0])
{
display = tf.getText();
tf.setText(display + "1");
}
else if(e.getSource()==num[1])
{
display = tf.getText();
tf.setText(display + "2");
}
else if(e.getSource()==num[2])
{
display = tf.getText();
tf.setText(display + "3");
}
else if(e.getSource()==num[3])
{
display = tf.getText();
tf.setText(display + "4");
}
else if(e.getSource()==num[4])
{
display = tf.getText();
tf.setText(display + "5");
}
else if(e.getSource()==num[5])
{
display = tf.getText();
tf.setText(display + "6");
}
else if(e.getSource()==num[6])
{
display = tf.getText();
tf.setText(display + "7");
}
else if(e.getSource()==num[7])
{
display = tf.getText();
tf.setText(display + "8");
}
else if(e.getSource()==num[8])
{
display = tf.getText();
tf.setText(display + "9");
}
else if(e.getSource()==btNum0)
{
display = tf.getText();
tf.setText(display + "0");
}
else if(e.getSource()==btDot)
{
String dot=".";
display=tf.getText();
tf.setText(display+ ".");
}
else if(e.getSource()==btAdd)
{
TEMP=Double.parseDouble(tf.getText());
tf.setText("");
addBool=true;
}
else if(e.getSource()==btSubtract)
{
TEMP=Double.parseDouble(tf.getText());
tf.setText("");
subBool=true;
}
else if(e.getSource()==btMultiply)
{
TEMP=Double.parseDouble(tf.getText());
tf.setText("");
mulBool=true;
}
else if(e.getSource()==btDivide)
{
TEMP=Double.parseDouble(tf.getText());
tf.setText("");
divBool=true;
}
else if(e.getSource()==btExponent)
{
TEMP=Double.parseDouble(tf.getText());
tf.setText("");
expBool=true;
}
else if(e.getSource()==btClear)
{
tf.setText(null);
}
}
public static void main(String... r)
{
new Calculator("ZeeCalc Calculator");
}
class Operations implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
//double c=1;
SolveTEMP=Double.parseDouble( tf.getText() );
if(addBool==true )
{
SolveTEMP=SolveTEMP+TEMP;
}
else if(subBool==true)
{
SolveTEMP=TEMP-SolveTEMP;
}
else if(mulBool==true)
{
SolveTEMP=SolveTEMP*TEMP;
}
else if(divBool==true)
{
SolveTEMP=TEMP/SolveTEMP;
}
else if(expBool==true)
{
double a=TEMP,b=SolveTEMP;
SolveTEMP=1;
for(int i=0;i<b;i++)
{
SolveTEMP=SolveTEMP*TEMP;
}
}
tf.setText(Double.toString(SolveTEMP));
addBool = false ;
subBool = false ;
mulBool = false ;
divBool = false ;
expBool = false ;
}
}
}