我刚刚在netbeans中制作了一个基本的计算器项目，当我在那里运行该项目时，代码工作得很好，当我转到docs> netbeans项目>dist>calculator.jar，并在那里运行它时它可以工作但是当我拖动它时到桌面并尝试在那里运行它 JFrame 不会打开
这是下面唯一的类：
package calculator;
/**
*
* @author David
*/
public class ui extends javax.swing.JFrame {
/**
* Creates new form ui
*/
public ui() {
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() {
buttonGroup1 = new javax.swing.ButtonGroup();
jScrollBar1 = new javax.swing.JScrollBar();
jLabel1 = new javax.swing.JLabel();
addBut = new javax.swing.JRadioButton();
subBut = new javax.swing.JRadioButton();
mulBut = new javax.swing.JRadioButton();
divBut = new javax.swing.JRadioButton();
intOneText = new javax.swing.JTextField();
intTwoText = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
result = new javax.swing.JLabel();
goButton = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout()); // error here
jLabel1.setText("Calculator");
getContentPane().add(jLabel1, new org.netbeans.lib.awtextra.AbsoluteConstraints(110, 60, -1, -1));
buttonGroup1.add(addBut);
addBut.setText("Add");
getContentPane().add(addBut, new org.netbeans.lib.awtextra.AbsoluteConstraints(200, 110, -1, -1));
buttonGroup1.add(subBut);
subBut.setText("Subtract");
getContentPane().add(subBut, new org.netbeans.lib.awtextra.AbsoluteConstraints(260, 110, -1, -1));
buttonGroup1.add(mulBut);
mulBut.setText("Multiply");
getContentPane().add(mulBut, new org.netbeans.lib.awtextra.AbsoluteConstraints(200, 140, -1, -1));
buttonGroup1.add(divBut);
divBut.setText("Divide");
getContentPane().add(divBut, new org.netbeans.lib.awtextra.AbsoluteConstraints(280, 140, -1, -1));
getContentPane().add(intOneText, new org.netbeans.lib.awtextra.AbsoluteConstraints(89, 131, 83, -1));
getContentPane().add(intTwoText, new org.netbeans.lib.awtextra.AbsoluteConstraints(90, 180, 83, -1));
jLabel2.setText("Integer 1:");
getContentPane().add(jLabel2, new org.netbeans.lib.awtextra.AbsoluteConstraints(20, 134, -1, -1));
jLabel3.setText("Integer 2:");
getContentPane().add(jLabel3, new org.netbeans.lib.awtextra.AbsoluteConstraints(20, 180, -1, -1));
result.setText("Solution Will Appear Here");
getContentPane().add(result, new org.netbeans.lib.awtextra.AbsoluteConstraints(180, 220, -1, -1));
goButton.setText("Calculate");
goButton.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
goButtonMouseClicked(evt);
}
});
getContentPane().add(goButton, new org.netbeans.lib.awtextra.AbsoluteConstraints(59, 218, -1, -1));
pack();
}// </editor-fold>
private void goButtonMouseClicked(java.awt.event.MouseEvent evt) {
if(intOneText.getText().equals("")){
result.setText("Something is missing here...");
}
if(intTwoText.getText().equals("")){
result.setText("Something is missing here...");
}
String intOne = intOneText.getText();
float numOne = Float.parseFloat(intOne);
String intTwo = intTwoText.getText();
float numTwo = Float.parseFloat(intTwo);
float answer = 0;
boolean addTrue = false;
boolean subTrue = false;
boolean mulTrue = false;
boolean divTrue = false;
if(addBut.isSelected()){
addTrue = true;
subTrue = false;
mulTrue = false;
divTrue = false;
}
if(subBut.isSelected()){
addTrue = false;
subTrue = true;
mulTrue = false;
divTrue = false;
}
if(mulBut.isSelected()){
addTrue = false;
subTrue = false;
mulTrue = true;
divTrue = false;
}
if(divBut.isSelected()){
addTrue = false;
subTrue = false;
mulTrue = false;
divTrue = true;
}
if(addTrue == false){
if(subTrue == false){
if(mulTrue == false){
if(divTrue == false){
result.setText("Something is missing here...");
}
}
}
}
if(addTrue == true){
answer = numOne + numTwo;
}
if(subTrue == true){
answer = numOne - numTwo;
}
if(mulTrue == true){
answer = numOne * numTwo;
}
if(divTrue == true){
answer = numOne / numTwo;
}
result.setText(Float.toString(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(ui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(ui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(ui.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(ui.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 ui().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JRadioButton addBut;
private javax.swing.ButtonGroup buttonGroup1;
private javax.swing.JRadioButton divBut;
private javax.swing.JButton goButton;
private javax.swing.JTextField intOneText;
private javax.swing.JTextField intTwoText;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JScrollBar jScrollBar1;
private javax.swing.JRadioButton mulBut;
private javax.swing.JLabel result;
private javax.swing.JRadioButton subBut;
// End of variables declaration
}
我在命令行中得到的错误是：
线程“AWT-EventQueue-0”中的异常 java.Lang.NoClassDefFoundError: org/netbeans/lib/awtExtra/AbsoluteLayout
在第 44 行...（上面评论）