One class type compiles into many .class files

I have written a single large GUI file that is composed of a single class (FCTabGui class). When I run javac FCTabGui.java it generates around 190 classes with the same name (FCTabGui) but each one after the first is attached with $# at the end (ie FCTabGui$1.class, ..., FCTabGui$189.class) . I have never seen this before. Does anyone know why this is happening and how I can keep it to just one .class file instead of 190. Thanks.
Jason

What I meant by "standard to jar up files for a GUI"
is that if there are lots of buttons that create
anonymous classes then you HAVE to jar up the files
because there is no alternative to it. One cannot
preserve the single .class file setup with a GUI,
unless its really small and has no action listeners.I suppose you could contort your code so that the single class not only creates all the widgets but also acts as the single action listener for every single button. This way you could avoid creating anonymous inner classes. But anyone who needs to maintain your code will grow to hate you.
One can double click on a jar file and it will start
running automatically, (assuming the JRE is
installed), right?You can do that, but it's not automatic. You have to explicitly list what class has the main() method to invoke when the jar is double clicked. If you're using a wizard to create the jar, this may be easily specified. Otherwise you can do it by creating a jar manifest file with a "Main-class:" attribute.

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i working with jsdk1.4.1 .
i can compile programs but can't perform them with "java" !!
this is error of it :
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anyone can lead & help me !!!
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Hello,
I'm new to java. I recently created a project in netbeans and here is one of the java files. I used the IDE to make a split pane, with a tree structure and panel in it.
* To change this template, choose Tools | Templates
* and open the template in the editor.
* AmplifierDesignGUI.java
* Created on Jun 20, 2010, 1:18:52 PM
package AmplifierDesign;
import java.util.logging.Level;
import java.util.logging.Logger;
* @author Bugz
public class AmplifierDesignGUI extends javax.swing.JFrame {
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public AmplifierDesignGUI() {
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() {
jSplitPane1 = new javax.swing.JSplitPane();
jScrollPane1 = new javax.swing.JScrollPane();
jTree1 = new javax.swing.JTree();
jPanel1 = new javax.swing.JPanel();
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenu2 = new javax.swing.JMenu();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
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jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(0, 475, Short.MAX_VALUE)
jPanel1Layout.setVerticalGroup(
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.add(0, 274, Short.MAX_VALUE)
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jMenuBar1.add(jMenu1);
jMenu2.setText("Edit");
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.add(layout.createSequentialGroup()
.add(8, 8, 8)
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layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
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pack();
}// </editor-fold>
* @param args the command line arguments
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new AmplifierDesignGUI().setVisible(true);
try {
new JTreeStructure().setVisible(true);
} catch (Exception ex) {
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// Variables declaration - do not modify
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JSplitPane jSplitPane1;
private javax.swing.JTree jTree1;
// End of variables declaration
So once this was done I wanted to link the JTree to a mysql database. So I found a sample .java file on the net:
* To change this template, choose Tools | Templates
* and open the template in the editor.
package AmplifierDesign;
import java.awt.*;
import java.sql.*;
import java.util.*;
import javax.swing.*;
import javax.swing.tree.*;
public class JTreeStructure extends JFrame {
Connection con = null;
Statement st = null;
ResultSet rs = null;
//public static void main(String args[]) throws Exception {
// new JTreeStructure();
public JTreeStructure() throws Exception {
super("Retrieving data from database ");
String driver = "com.mysql.jdbc.Driver";
String url = "jdbc:mysql://localhost:8889/";
String db = "icons";
ArrayList list = new ArrayList();
list.add("Laser Objects");
Class.forName(driver);
con = DriverManager.getConnection(url + db, "root", "root");
try {
String sql = "Select * from fiberComponents";
st = con.createStatement();
rs = st.executeQuery(sql);
while (rs.next()) {
Object value[] = {"Fiber Components",rs.getString(2) };
list.add(value);
} catch (Exception e) {
System.out.println(e);
rs.close();
st.close();
con.close();
Object hierarchy[] = list.toArray();
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container content = getContentPane();
DefaultMutableTreeNode root = processHierarchy(hierarchy);
JTree tree = new JTree(root);
content.add(new JScrollPane(tree), BorderLayout.CENTER);
setSize(275, 300);
setLocation(300, 100);
setVisible(true);
private DefaultMutableTreeNode processHierarchy(Object[] hierarchy) {
DefaultMutableTreeNode node = new DefaultMutableTreeNode(hierarchy[0]);
DefaultMutableTreeNode child;
for (int i = 1; i < hierarchy.length; i++) {
Object nodeSpecifier = hierarchy;
if (nodeSpecifier instanceof Object[]) // Ie node with children
child = processHierarchy((Object[]) nodeSpecifier);
} else {
child = new DefaultMutableTreeNode(nodeSpecifier); // Ie Leaf
node.add(child);
return (node);
The problem is when I run my program two windows open up. The original one with JTree1, and the panel and horizontal splitplane and another window with a new tree component that did get its objects from the database. My question is how do I "replace" the JTree1 with the new tree created from the second java file?
Or additionally, maybe I could set the data for JTree1 from within the second java file?

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c:\Program Files\Apache Tomcat 4.0\webapps\Murthy\WEB-INF\classes>javac -d src\*.java
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This, of course, is why topics shouldn't be addressed to individuals - they are likely to never see it. Today is the first time I have seen this, and that is due solely to a search that I was running.
Why would you use one over the other?
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You can use reflection to dynamically add functionality to an application. If you use a jar file then the application must be restarted for the changes to take effect. If you use class files then the application does not have to be restarted. Obviously the second only works if you have some way to dynamically notify the application that new classes are available - like a database.
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Since in the above it is likely that there is not a large distribution problem, when the usage is a concern then the best strategy is as class files. They allow the most flexibility and there is unlikely to be any concern at all how it is packaged.
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Testing. It is easier to replace a class file in a testing environment to fix a bug than a jar file. Particularily if the make process for the jar file rebuilds everything.

One class type compiles into many .class files

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