Embedded files in class?(Orignated from thre thread "Class Structure")

I have two classes which are about 1MB & 1.5MB in size. When I decompile them I get a code of only 30Kb. The classes shows swing gui components but there is no sign of swing in the byte code, forget the file produced by decompiling.
I want to know that is special is the class that gives rise to such situation.
A few things I would appreciated if repliers keep in mind:
0)The classes are 1)Unistaller of JavaEE and 2)installer of Solaris10
You may get a copy the decompiled code here:
http://javautilities.sourceforge.net/class_and_source.zip
1) Size of Byte code = 1.5MB
2) Size of code generated by decompiling = 30KB
30Kb/1.5Mb=0.02=2%=comparitively very small
3)The class shows swing components like JFrame, JButtons....
But when I search the byte code for javax.swing, or setVisible or any other set of characters generally found in a class that uses swing, I find nothing. There is no sign of swing!
4) The class extends ClassLoader, so it may be using classloader for running the classes by loadClass(byte[]b...)
5)The look and feel is JavaLookAndFeel
6)Both the Solaris10 setup and JavaEE unistaller show the same icon and more or less same type of frames.
7)I have kept them seperated from there respective environments, completely inert, and even then they work(show errors but still don't terminate)
I would be really thankful for your replies.
Thanks.
PS: This topic has originated from
http://forum.java.sun.com/thread.jspa?threadID=792867&start=0&tstart=0
you would get a better idea if you go through the first few posts from the parent thread.

My first priority is to get my question answered.I guess no matter how many multi-posts it takes
I don't know how much patience one requires.Greater than what I have.
And zodak why aren't you expressing your views in
this topic? Why did you leave the topic yesterday?Because you began to frustrate me yesterday. I can choose what topics I want to respond to, when I want to. You do know that no one is payed to help you right?
Also my name is Zadok not zodak.
Well it has been about a week I have tried getting
answers or this topic. And I am getting really weary.Then stop putting a drain on us and just do it yourself or give up.

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Use the "code" formatting tags when posting code.
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thank you very much !
i tried it ,but the TableModel i used like this ,and how to change the TableModel?
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You can declare your i variable in myClass2 as public static and then simply call there
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I have most of what I need here, but I’m missing 2 important pieces.
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Knowledge is the only thing that I can give you, and still retain, and we are both better off for it.

Hi ryguy72,
>>When I have PDF files and Word files, the contents of the Word files are copied in fine, but the contents of the PDF files seem to come in as Chinese, and there is no Chinese in the PDF, so I have no idea where that’s coming from.<<
Based on the code, you were insert the file via the code Selection.InsertFile. I am trying to reproduce this issue however failed. I suggest that you insert the PDF file manually to see whether this issue relative to the specific file. You can insert PDF
file via Insert->Text->Object->Text from file.
If this issue also could reproduced manually, I would suggest that you reopen a new thread in forum to narrow down whether this issue relative to the specific PDF file or Word application.
>> I want to extract all embedded files (in all my Word files) and save the extracted/opened file into the folder. Some embedded files are PDFs and some are Excel files.<<
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absolve.
Hope it is helpful.
Regards & Fei
We are trying to better understand customer views on social support experience, so your participation in this interview project would be greatly appreciated if you have time. Thanks for helping make community forums a great place.
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HERE to participate the survey.

Gui doesn't show when the Thread is dispatched from the main class

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* User: Administrator
* Date: 14/10/2005
* Time: 18:26:47
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import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
* User: Administrator
* Date: 14/10/2005
* Time: 18:26:47
* This is a file Unzipper;
* It takes a zipped archive, reads it, and decompresses the files within it
* It is a stand alone thread since the user doesn't need to wait for it or whatever;
* It also shows a nice progress bar gui for the user to know how the decompressing works
public class FileUnZip extends Thread{
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 private ZipInputStream zipInStream;
 private FileInputStream fileInputStream;
 private int sChunk=8192;//8KB buffer size for optimized i/o performance
 private byte[] buff;
 private FileOutputStream entryOutputStream;
 private BufferedOutputStream bufferedOutputStream;
 private String sourceArchiveName;
 private String targetDirectoryName;
 private String targetFileName;// a string that stores the current zipped file in the archive
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//for progress bar gui:
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 private JProgressBar currentFileProgBar;
 private JPanel progPanel;
 private JLabel overAllLabel;
 private JLabel currentFileLabel;
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 private int currEntryValue=0;
 private JFrame progFrm;
//constructor that produces the output in the same directory as source
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 targetDirectoryName=sourceArchiveName.substring(0,
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 dir.mkdir();
 this.start();
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 public FileUnZip(String sourceArchiveN, String targetFileN) {
 sourceArchiveName = sourceArchiveN;
 targetDirectoryName = targetFileN.substring(0,targetFileN.length()-4);
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 dir.mkdir();
 this.start();
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 progFrm = new JFrame("Extracting " + sourceArchiveName);
 progPanel = new JPanel(new GridLayout(2,2));
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 progFrm.pack();
 progFrm.setResizable(false);
 progFrm.setVisible(true);
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 try {
 zipFile = new ZipFile(sourceArchiveName);
 zipEntriesNum=zipFile.size();// get entries number from the archive,
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 if (zipFile!=null) {
 try {
 zipFile.close();
 } catch (IOException e) {
 System.out.println("zip file never initiated");
 try {
 fileInputStream = new FileInputStream(sourceArchiveName);
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 e.printStackTrace();
 zipInStream = new ZipInputStream(new BufferedInputStream(
 fileInputStream));
 buff=new byte[sChunk];
 public void start(){
 initStreams();
 initGui();
 run();
 public void run(){
 File outputFile;
 int succeededReading=0;
 try {
 while((zipEntry = zipInStream.getNextEntry())!=null){
 overAllProgBar.setValue(++currEntryValue);
 readsNumber=(int)zipEntry.getSize()/sChunk;
 currentFileProgBar.setMaximum(readsNumber);
 targetFileName=targetDirectoryName +
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 outputFile=new File(targetFileName);
 System.out.println("outputFile.getAbsolutePath() = "
 + outputFile.getAbsolutePath());
 if(!outputFile.exists()){
 outputFile.createNewFile();
 entryOutputStream=new FileOutputStream(outputFile);
 bufferedOutputStream = new BufferedOutputStream(
 entryOutputStream, sChunk);
 while((succeededReading=zipInStream.read(
 buff,0,sChunk))!=-1){ //extract single entry
 bufferedOutputStream.write(buff,0,succeededReading);
 currentFileProgBar.setValue(++currFileValue);
 bufferedOutputStream.flush();
 bufferedOutputStream.close();
 entryOutputStream.flush();
 currFileValue = 0;
 } catch (IOException e) {
 e.printStackTrace();
 finalize();
 public void closeStreams(){
 try {
 zipInStream.close();
 } catch (IOException e) {
 e.printStackTrace();
 try {
 fileInputStream.close();
 } catch (IOException e) {
 e.printStackTrace();
 if (entryOutputStream!=null) {
 try {
 entryOutputStream.flush();
 entryOutputStream.close();
 } catch (IOException e) {
 System.out.println("entry stream never opened");
 if(bufferedOutputStream!=null){
 try {
 bufferedOutputStream.flush();
 bufferedOutputStream.close();
 } catch (IOException e) {
 e.printStackTrace();
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 try {
 super.finalize();
 } catch (Throwable throwable) {
 throwable.printStackTrace();
 progFrm.dispose();
 closeStreams();
 endTask();
 private void endTask(){
//play a sound when task is complete
 java.awt.Toolkit.getDefaultToolkit().beep();
}

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I need to read from and write into a same file multiple threads.
How can we do that without any data contamination.
Can u please provide coding for this type of task.
Thanks in advance.

Assuming you are using RandomAccessFile, you can use the locking functionality in the Java NIO library to lock sections of a file that you are reading/writing from each thread (or process).
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- K
I need to read from and write into a same file
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How can we do that without any data contamination.
Can u please provide coding for this type of task.
Thanks in advance.

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Sorry that wasn't clear. What I mean is that the classes are compiled to byte code directly to memory and no physical .class file is created. Yes, I'm using my own ClassLoader that extends URLClassLoader and I'm setting the parent to ClassLoader.getSystemClassLoader(). I also should mention that I'm doing this inside a Netbeans module that is part of a Netbeans Platform application. I don't know why that should matter though, since I'm trying to do everything in memory without creating the physical files. Thanks.

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Halo.
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if you can reference using that, you can remove using:
MovieClip(root).MyMovieClip.parent.removeChild(MovieClip(root).MyMovieClip);
and you can add to any displayobjectcontainer.

How to use methods from a JAR file inside my springcontext (Oracle fusion 12c) class file?

Dear Friends,
I have a jar file, which has executed classes and methods in it. I want to make use of these methods inside my springcontext piece of code.
Can someone please share an example of how to write spingcontext code which is accessing classes/methods from JAR files along with the any setup?
Thanks,

I have found the answer... as described in:
http://java.sun.com/javase/6/docs/technotes/guides/lang/resources.html
the problem was that the properties are loaded with the getResource & getResourceAsStream methods and I didn't know that one. I thought that is was loaded through findClass because I saw the property files trying to be loaded through findClass.
The truth is that it tries to load with the getRessources methods and if it fails tries with the findClass/loadClass.
To Fix the problem, I have simply overriden the getRessourceAsStream to do my magic and that was it.
Thanks

Accessing object of the main class from the thread

Hi, I'm having problem accessing object of the main class from the thread. I have only one Thread and I'm calling log.append() from the Thread. Object log is defined and inicialized in the main class like this:
public Text log; // Text is SWT component
log = new Text(...);Here is a Thread code:
...while((line = br.readLine())!=null) {
     try {
          log.append(line + "\r\n");
     } catch (SWTException swte) {
          ErrorMsg("SWT error: "+swte.getMessage());
}Error is: org.eclipse.swt.SWTException: Invalid thread access
When I replace log.append(...) with System.out.println(..) it works just fine, so my question is do the log.append(..) the right way.

This is NOT a Java problem but a SWT specific issue.
It is listed on the SWT FAQ page http://www.eclipse.org/swt/faq.php#uithread
For more help with this you need to ask your question on a SWT specific forum, there is not a thing in these forums. This advice isn't just about SWT by the way but for all specific API exceptions/problems. You should take those questions to the forum or mailing list for that API. This forum is for general problems and exceptions arising from using the "core" Java libraries.

"Safe" delete of Thread class from a Vector

I need to be able to delete a thread class object from a vector.
1) Is it safe to do so immedately after calling xyz.stop() ?
2) If so, does Java clean all the thread stuff up automatically ?
3) If not, is there something else I should do to clean up?

The stop method of class Thread is deprecated, however it's still possible to stop this thread. A thread's memory should become available for garbage collection the moment it is no longer executing, and it is no longer being reffered to.
To stop your thread, you need to set a boolean flag that is available to it to false:
Thread myThread = new Thread()
     public boolean stopRunning = false;
     public boolean threadComplete = false;
     public void run()
          while(!stopRunning)
               doSomething();
          threadComplete = true;
}If you are doing something involving blocking I/O inside your thread, you're going to need to interrupt the thread after setting this public flag to true in order to get it to stop executing.
Then you can simply remove it's refference from that Vector, and it will become elligable for Garbage collection the moment it becomes inactive.
-Jason Thomas.

Create Class objects from an Array of File Objects

Hi There,
I'm having extreme difficulty in trying to convert an array of file objects to Class objects. My problem is as follows: I'm using Jfilechooser to select a directory and get an array of files of which are all .class files. I want to create Class objects from these .class files. Therefore, i can extract all the constructor, method and field information. I eventually want this class information to display in a JTree. Very similar to the explorer used in Netbeans. I've already created some code below, but it seems to be throwing a NoSuchMethodError exception. Can anyone please help??
Thanks in advance,
Vikash
/* the following is the class im using */
class FileClassLoader extends ClassLoader {
private File file;
public FileClassLoader (File ff) {
this.file = ff;
protected synchronized Class loadClass() throws ClassNotFoundException {
Class c = null;
try {
// Get size of class file
int size = (int)file.length();
// Reserve space to read
byte buff[] = new byte[size];
// Get stream to read from
FileInputStream fis = new FileInputStream(file);
DataInputStream dis = new DataInputStream (fis);
// Read in data
dis.readFully (buff);
// close stream
dis.close();
// get class name and remove ".class"
String classname = null;
String filename = file.getName();
int i = filename.lastIndexOf('.');
if(i>0 && i<filename.length()-1) {
classname = filename.substring(0,i);
// create class object from bytes
c = defineClass (classname, buff, 0, buff.length);
resolveClass (c);
} catch (java.io.IOException e) {
e.printStackTrace();
return c;
} // end of method loadClass
} // end of class FileClassLoader
/* The above class is used in the following button action in my gui */
/* At the moment im trying to output the data to standard output */
private void SelectPackage_but2ActionPerformed(java.awt.event.ActionEvent evt) {
final JFileChooser f = new JFileChooser();
f.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int rVal = f.showOpenDialog(Remedy.this);
// selects directory
File dir = f.getSelectedFile();
// gets a list of files within the directory
File[] allfiles = dir.listFiles();
// for loop to filter out all the .class files
for (int k=0; k < allfiles.length; k++) {
if (allfiles[k].getName().endsWith(".class")) {
try {
System.out.println("File name: " + allfiles[k].getName()); // used for debugging
FileClassLoader loader = new FileClassLoader(allfiles[k]);
Class cl = loader.loadClass();
//Class cl = null;
Class[] interfaces = cl.getInterfaces();
java.lang.reflect.Method[] methods = cl.getDeclaredMethods();
java.lang.reflect.Field[] fields = cl.getDeclaredFields();
System.out.println("Class Name: " + cl.getName());
//print out methods
for (int m=0; m < methods.length; m++) {
System.out.println("Method: " + methods[m].getName());
// print out fields
for (int fld=0; fld < fields.length; fld++) {
System.out.println("Field: " + fields[fld].getName());
} catch (Exception e) {
e.printStackTrace();
} // end of if loop
} // end of for loop
packageName2.setText(dir.getPath());
}

It's throwing the exeption on the line:
FileClassLoader loader = new FileClassLoader(allfiles[k]);
I'm sure its something to do with the extended class i've created. but i cant seem to figure it out..
Thanks if you can figure it out

Embedded files in class?(Orignated from thre thread "Class Structure")

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