我正在使用Java，我正在尝试使用NetBeans创建计算器，但我的Jframe无法启动。
/*
* 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 Calculation;
/**
*
* @author rishi
*/
public class Calculator extends javax.swing.JFrame {
double firstnumber;
double secondnumber;
double result;
String operations;
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">
private void initComponents() {
jtxtDisplay = new javax.swing.JTextField();
jBtn1 = new javax.swing.JButton();
jBtn2 = new javax.swing.JButton();
jBtn3 = new javax.swing.JButton();
jBtn4 = new javax.swing.JButton();
jBtn5 = new javax.swing.JButton();
jBtn6 = new javax.swing.JButton();
jBtn7 = new javax.swing.JButton();
jBtn8 = new javax.swing.JButton();
jBtn9 = new javax.swing.JButton();
jBtn10 = new javax.swing.JButton();
jBtn11 = new javax.swing.JButton();
jBtn12 = new javax.swing.JButton();
jBtn13 = new javax.swing.JButton();
jBtn14 = new javax.swing.JButton();
jBtn15 = new javax.swing.JButton();
jBtn16 = new javax.swing.JButton();
jBtn17 = new javax.swing.JButton();
jBtn18 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jtxtDisplay.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jtxtDisplay.setHorizontalAlignment(javax.swing.JTextField.RIGHT);
jtxtDisplay.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jtxtDisplayActionPerformed(evt);
}
});
jBtn1.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn1.setText("1");
jBtn1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn1ActionPerformed(evt);
}
});
jBtn2.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn2.setText("2");
jBtn2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn2ActionPerformed(evt);
}
});
jBtn3.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn3.setText("3");
jBtn3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn3ActionPerformed(evt);
}
});
jBtn4.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn4.setText("4");
jBtn4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn4ActionPerformed(evt);
}
});
jBtn5.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn5.setText("5");
jBtn5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn5ActionPerformed(evt);
}
});
jBtn6.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn6.setText("6");
jBtn6.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn6ActionPerformed(evt);
}
});
jBtn7.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn7.setText("7");
jBtn7.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn7ActionPerformed(evt);
}
});
jBtn8.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn8.setText("8");
jBtn8.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn8ActionPerformed(evt);
}
});
jBtn9.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn9.setText("+");
jBtn9.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn9ActionPerformed(evt);
}
});
jBtn10.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn10.setText("-");
jBtn10.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn10ActionPerformed(evt);
}
});
jBtn11.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn11.setText("9");
jBtn11.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn11ActionPerformed(evt);
}
});
jBtn12.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn12.setText("0");
jBtn12.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn12ActionPerformed(evt);
}
});
jBtn13.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn13.setText("+/-");
jBtn13.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn13ActionPerformed(evt);
}
});
jBtn14.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn14.setText(".");
jBtn14.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn14ActionPerformed(evt);
}
});
jBtn15.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn15.setText("/");
jBtn15.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn15ActionPerformed(evt);
}
});
jBtn16.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn16.setText("*");
jBtn16.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn16ActionPerformed(evt);
}
});
jBtn17.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn17.setText("c");
jBtn17.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn17ActionPerformed(evt);
}
});
jBtn18.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jBtn18.setText("=");
jBtn18.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jBtn18ActionPerformed(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()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jtxtDisplay)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jBtn1, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jBtn2, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jBtn3, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jBtn4, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(jBtn5, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jBtn6, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jBtn7, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jBtn8, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addComponent(jBtn11, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jBtn12, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jBtn9, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jBtn10, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jBtn17, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addComponent(jBtn15, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jBtn16, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jBtn13, javax.swing.GroupLayout.PREFERRED_SIZE, 69, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jBtn14, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(0, 0, Short.MAX_VALUE))
.addComponent(jBtn18, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(22, 22, 22)
.addComponent(jtxtDisplay, javax.swing.GroupLayout.PREFERRED_SIZE, 46, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jBtn1, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn2, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn3, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn4, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jBtn5, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn6, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn7, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn8, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jBtn11, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn12, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn9, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn10, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jBtn15, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn16, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn13, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn14, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jBtn17, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jBtn18, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(18, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jtxtDisplayActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jBtn1ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn1.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn2ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn2.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn3ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn3.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn4ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn4.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn5ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn5.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn6ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn6.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn7ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn7.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn8ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn8.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn11ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn11.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn12ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn12.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn9ActionPerformed(java.awt.event.ActionEvent evt) {
firstnumber = Double.parseDouble(jtxtDisplay.getText());
jtxtDisplay.setText("");
operations="+";
}
private void jBtn10ActionPerformed(java.awt.event.ActionEvent evt) {
firstnumber = Double.parseDouble(jtxtDisplay.getText());
jtxtDisplay.setText("");
operations="-";
}
private void jBtn15ActionPerformed(java.awt.event.ActionEvent evt) {
firstnumber = Double.parseDouble(jtxtDisplay.getText());
jtxtDisplay.setText("");
operations="/";
}
private void jBtn16ActionPerformed(java.awt.event.ActionEvent evt) {
firstnumber = Double.parseDouble(jtxtDisplay.getText());
jtxtDisplay.setText("");
operations="*";
}
private void jBtn13ActionPerformed(java.awt.event.ActionEvent evt) {
double ops = Double.parseDouble(String.valueOf(jtxtDisplay.getText()));
ops = ops * (-1);
jtxtDisplay.setText(String.valueOf(ops));
}
private void jBtn14ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn14.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn17ActionPerformed(java.awt.event.ActionEvent evt) {
String Enternumber = jtxtDisplay.getText() + jBtn17.getText();
jtxtDisplay.setText(Enternumber);
}
private void jBtn18ActionPerformed(java.awt.event.ActionEvent evt) {
String answer;
secondnumber = Double.parseDouble(jtxtDisplay.getText());
if (operations == "+")
{
result = firstnumber + secondnumber;
answer = String.format("%.0f", result);
jtxtDisplay.setText(answer);
}
else if (operations == "-")
{
result = firstnumber - secondnumber;
answer = String.format("%.0f", result);
jtxtDisplay.setText(answer);
}
else if (operations == "*")
{
result = firstnumber * secondnumber;
answer = String.format("%.0f", result);
jtxtDisplay.setText(answer);
}
else if (operations == "/")
{
result = firstnumber / secondnumber;
answer = String.format("%.0f", result);
jtxtDisplay.setText(answer);
}
else if (operations == "%")
{
result = firstnumber % secondnumber;
answer = String.format("%.0f", result);
jtxtDisplay.setText(answer);
}
}
/**
* @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
private javax.swing.JButton jBtn1;
private javax.swing.JButton jBtn10;
private javax.swing.JButton jBtn11;
private javax.swing.JButton jBtn12;
private javax.swing.JButton jBtn13;
private javax.swing.JButton jBtn14;
private javax.swing.JButton jBtn15;
private javax.swing.JButton jBtn16;
private javax.swing.JButton jBtn17;
private javax.swing.JButton jBtn18;
private javax.swing.JButton jBtn2;
private javax.swing.JButton jBtn3;
private javax.swing.JButton jBtn4;
private javax.swing.JButton jBtn5;
private javax.swing.JButton jBtn6;
private javax.swing.JButton jBtn7;
private javax.swing.JButton jBtn8;
private javax.swing.JButton jBtn9;
private javax.swing.JTextField jtxtDisplay;
// End of variables declaration
}
答案 0 :(得分：0)
如果您的系统上安装的netbeans工作正常，您可能会看到代码与eclipse完美配合，请尝试重新安装。