Я изучаю Java IDE прямо сейчас, я начинаю с NetBeans. Я сделал проект, который имеет два класса JFrame. Я отредактировал код, но получил несколько ошибок. Из того, что я могу сказать, это связано с тем, что я сделал. Я действительно не вижу ничего плохого? Может быть, вы можете?
Ошибка:
Exception in thread "main" java.lang.NoClassDefFoundError: com/actvtimer/ActivityFrame$1
at com.actvtimer.ActivityFrame.initComponents(ActivityFrame.java:49)
at com.actvtimer.ActivityFrame.<init>(ActivityFrame.java:26)
at com.actvtimer.ActivityFrame.main(ActivityFrame.java:155)
Caused by: java.lang.ClassNotFoundException: com.actvtimer.ActivityFrame$1
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
... 3 more
ActivityFrame.java:
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/*
* ActivityFrame.java
*
* Created on May 7, 2011, 5:29:14 PM
*/
package com.actvtimer;
import javax.swing.DefaultListModel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
/**
*
* @author Andrew
*/
public class ActivityFrame extends javax.swing.JFrame {
DefaultListModel model = new DefaultListModel();
/** Creates new form ActivityFrame */
public ActivityFrame() {
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() {
jScrollPane2 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jButton1 = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
jList1 = new javax.swing.JList();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Activity Timer");
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
},
new String [] {
"Activity", "Time Allowed", "Time Left"
}
) {
Class[] types = new Class [] {
java.lang.String.class, java.lang.Integer.class, java.lang.String.class
};
boolean[] canEdit = new boolean [] {
false, true, false
};
public Class getColumnClass(int columnIndex) {
return types [columnIndex];
}
public boolean isCellEditable(int rowIndex, int columnIndex) {
return canEdit [columnIndex];
}
});
jScrollPane2.setViewportView(jTable1);
jButton1.setText("Add Activity");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jList1.setModel(model);
jScrollPane1.setViewportView(jList1);
jButton2.setText("Start Activity");
jButton3.setText("Stop Activity");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane2, javax.swing.GroupLayout.DEFAULT_SIZE, 464, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton3)
.addGap(108, 108, 108))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jScrollPane2, javax.swing.GroupLayout.PREFERRED_SIZE, 90, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jButton1)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton2)
.addComponent(jButton3))
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 68, Short.MAX_VALUE))
.addContainerGap())
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
AddActivityFrame addAct = new AddActivityFrame(this);
addAct.setVisible(true);
addAct.setResizable(false);
}
public void addActivity(String name, int minutes) {
model.addElement(name);
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
try {
// Set System L&F
UIManager.setLookAndFeel(
UIManager.getSystemLookAndFeelClassName());
}
catch (UnsupportedLookAndFeelException e) {
// handle exception
}
catch (ClassNotFoundException e) {
// handle exception
}
catch (InstantiationException e) {
// handle exception
}
catch (IllegalAccessException e) {
// handle exception
}
ActivityFrame app = new ActivityFrame();
app.setVisible(true);
app.setResizable(false);
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JList jList1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JTable jTable1;
// End of variables declaration
}