Protecting the source code

I heard about the possibilty of decompiling the java code and getting back the source code, is this flaw specific to java or is it common among all programming langauges?
how is it possible to protect the source code? and how expensive is the solution?
thank you

This is not a flaw!
Java is compiled on the byte level not bit level. This is so because the same class can run on Windows, Solaris, Linux and Unix. This makes the execution a little bit slower and easier to decompile but a small price to pay for cross platform compatibilty.

Similar Messages

How to protect the source code?

hello everyone,
how can I encrypt the bean program, such that people cannot decompile and get the source code? Any link to useful reading would be very helpful too, thanks in advance!

Just go through this query posted in the jdc forum:
Question of the week No.160: How do you protect your code from decompilers?
http://developer.java.sun.com/developer/qow/archive/160/index.jsp
Hope this clears your doubts.
ajit

How to protect the source code in lookout

we are using the lookout 6.5 version for the automation. we want to protect the code from the end user, please confirm the possibility of the same.

The .lks file is the source file. If you give the .l4p file to end user, and the end user uses the runtime only server, they cannot modify anything. But actually they can modify the process if they have development server.
Ryan Shi
National Instruments

Protecting java source code

I heard about the possibilty of decompiling the java code and getting back the source code, is this flaw specific to java or is it common among all programming langauges?
how is it possible to protect the source code? and how expensive is the solution?
thank you

Back to poster: To my knowledge, the ability tode-compile back to valid source code is unique to
Java.
No it's not. Any program files can be decompiledback
to source code.
If not their original C or C++ code, then at least
assembly code.You cannot decompile C or C++ code to anything but
assembler language. Which even when written by a good
programmer is considered obfuscated by others. I
doubt that anyone has lifted C or C++ code from
another application using a decompiler.yes you can, all binaries can be reverse compiled, logically speaking they have to be!
However, the readability of the output is not going to be as high as that obtained from decompiled java.
>
I would say that de-compilation is not a flaw in Javawhen compared to
powerful features it has to offer. Of course it's a flaw (so I disagree with you here).
People don't want this behavior, but it exists. As I
stated earlier (and I'm agreeing with you on this
one), it was an issue of priorites, and the
developers of Java decided that it was OK because it
allowed "powerful features"...it is a feature - whether it is a desirable feature is another argument entirely.
>
Here's a list of projects where the developers arenot interested in
hiding the source code from you, in fact they let youhave it for free:
Notice the words developers, not software companies.
I believe in open source and participate in it when
not bound by non-disclosure which is 99% of the time.
But I would stand by my statement that there are no
o software companies selling retail software that
believe the ability to decompile Java back to Java
source code is OK or good for them in anyway. I would
gently suggest that providing open source code, and
providing the ability to decompile to source code
really don't belong in the same discussion...Protecting code is not the job of programmers, it is the job of the Law.
rob,

Protecting Apex Source Code

Hi,
It is possible to encrypt or protect the source code for an apex application.
I want to make sure nobody can export my application or at least that is not legible to protect the logic.
Any suggestions or workaround?
Thanks!!!!

Hello Oliver,
You cannot encrypt the data in the apex tables (unless you use encrypted tablespaces, but then still you can access the data using an oracle front end). But you can use database packages (procedures/functions) to store your logic (and just call these functions from within apex). And you can wrap the source code of those packages..
Greetings,
Roel
http://roelhartman.blogspot.com/
You can reward this reply by marking it as either Helpful or Correct ;-)

Protecting J2ee source code

hi
How I can protect my source code from a decompilation in a J2ee
environment. I search a effective means for protecting the source code,
and that is not a handicap in term of performances.
I must to crypted the source code or to use an obfuscator (which is most
effective)?
regards

In a J2EE environment, obfuscating your code should make sense only if you're a library or components developer, and you have to supply class files to your clients and don't want them to be able to reverse-engineer.
If you do not supply libraries, your code is on the server, and you shouldn't need to obfuscate anything.
Of course, if some intruder gets access to your server machine, the above does not hold anymore. However, I suspect that you'll have much bigger worries in this case than the mere possibility of the intruder decompiling your code....

I am unable to watch any tv channel due to the problem that it says is the source code is protected by html guardian. how to solve this problem?

when i tried to watch a tv channel on livetvchannelsfree.in it says that the source code is protected by html guardian. in firefox 3.6 beeta5 i did not come across this problem. but now in latest version i am unable to watch any tv channel. canyou please tell me how to solve this problem?

Forgotten Passcode or device disabled after entering wrong passcode

How to protect JSP source code on the Server Side ?

I am new on JSP. I Already know about various Web and Desktop technologies but is the first time on JSP. I know ASP for example.
Well, about .NET platform, it protects my source code on the server, the source code is compiled and on the server, only the compiled file are installed, my source code stay with me...
About JSP, how it works about ? Is possible to hide my source code too ? What the technique to hide the codes ? I need to prevent access to my source codes...
Roberto

roberto.novakosky wrote:
About .exe files, do you know if a java class is more easy or dificult to do reverse engineering ?Depends on who your enemy is. If it's for example a hacker with a lot of C knowledge but zero of Java knowledge, reverse engineering .exe would be easier than .class. If one was interested, one would always take time to learn how to decompile the one or other. Making files secure is a waste of time. It's always "hackable".
If there was a proof of concept, no one major software vendor would have had so much problems with piracy and cracks/keygens. Think about it once again. It's simply impossible. Just have a clear EULA and actually make work of it whenever you discovers if someone breaks your EULA.
I was thinking about, the .JSP can be converted to servlet .java, and converted to .class, this way hide the source code.Once again, one could still decompile it (or reverse engineer, so you call).

How to display the source code for this friggin' file.

Below is a rather lengthy bit of code that provides the behavior and attributes of a web server for OpenCyc. I need to know if I can enter some java to have the HTML source code displayed in a separate text file whenever this class returns some resulting webpage. If you have any ideas it will be greatly appreciated.
-"Will code for foo."
package org.opencyc.webserver;
* Class WebServer is simple multithreaded HTTP server
* with CGI limited to a Cyc connection on default port 3600.
* <p>
import java.net.*;
import java.io.*;
import java.util.*;
import java.util.jar.*;
import java.text.*;
import org.opencyc.util.*;
public class WebServer extends Thread {
     * Singleton WebServer instance.
    public static WebServer current;
     * Default HTTP port.
    protected static int DEFAULT_PORT = 80;
     * Default Cyc base port.
    protected static int DEFAULT_CYC_PORT = 3600;
     * Default directory to serve files from on non-Windows OS.
    protected static String DEFAULT_DIR = "/";
     * Default directory to serve files from on Windows.
    //protected static String DEFAULT_WIN_DIR = "C:\\";
    protected static String DEFAULT_WIN_DIR = "k:\\opencyc\\run\\httpd\\htdocs";
     * File cache capacity.
    protected static final int CACHE_CAPACITY = 100;
     * File cache to improve file serving performance.
    protected static Hashtable fileCache = new Hashtable(CACHE_CAPACITY);
     * Number of files served from this web server.
    protected static long nbrFilesServed = 0;
     * Number of files served from this web server that were found in the cache.
    protected static long nbrCacheHits = 0;
     * Server socket for accepting connections.
    protected ServerSocket server;
     * Directories to serve files from.
    protected ArrayList dirs;
     * Map from String (jar root) to JarFile[] (jar class path).
    protected HashMap map;
     * Webserver HTTP port.
    protected int port;
     * Cyc HTML host.
    protected String cycHost = "localhost";
     * Cyc HTML port.
    protected int cycPort;
     * Expand jar tress.
    protected boolean trees;
     * Requests flag.
    protected boolean traceRequests;
     * Constructs a WebServer object.
     * @param port the port to use
     * @param directories the directory to serve files from
     * @param trees true if files within jar files should be served up
     * @param traceRequests true if client's request text should be logged.
     * @exception IOException if the listening socket cannot be opened, or problem opening jar files.
    public WebServer() throws IOException {
        getProperties();
        server = new ServerSocket(port);
        processDirectories();
     * Class Task processes a single HTTP request.
    protected class Task extends Thread {
         * Socket for the incoming request.
        protected Socket sock;
         * Client socket to the Cyc KB HTML server.
        protected Socket cycHtmlSocket;
         * Output tcp stream.
        protected DataOutputStream out;
         * Contains the file request path for a not-found error message.
        protected String notFoundPath;
         * Contains the first line of a request message.
        protected String methodLine;
         * Contains the body of a POST method.
        protected String bodyLine;
         * Constructs a Task object.
         * @param sock the socket assigned for this request.
        public Task(Socket sock) {
            this.sock = sock;
         * Processes the HTTP request.
        public void run() {
            if (traceRequests)
                Log.current.println("connection accepted from " + sock.getInetAddress());
            notFoundPath = "";
            try {
                out = new DataOutputStream(sock.getOutputStream());
                try {
                    getBytes();
                catch (Exception e) {
                    Log.current.println("file not found: " + notFoundPath);
                    try {
                        out.writeBytes("HTTP/1.1 404 Not Found\r\n");
                        out.writeBytes("Server: Cyc WebServer\r\n");
                        out.writeBytes("Connection: close\r\n");
                        out.writeBytes("Content-Type: text/html\r\n\r\n");
                        out.writeBytes("<HTML><HEAD>\n");
                        out.writeBytes("<TITLE>404 Not Found</TITLE>\n");
                        out.writeBytes("</HEAD><BODY>\n");
                        out.writeBytes("<H1>404 - Not Found</H1>\n");
                        out.writeBytes("</BODY></HTML>");
                        out.flush();
                    catch (SocketException se) {
            catch (Exception e) {
                Log.current.printStackTrace(e);
            finally {
                try {
                    sock.close();
                catch (IOException e) {
         * Reads the HTTP request and obtains the response.
         * @exception IOException when HTTP request has an invalid format.
        private void getBytes() throws IOException {
            // Below logic is complex because web browsers do not close the
            // socket after sending the request, so must parse message to find
            // the end.
            BufferedReader in = new BufferedReader(new InputStreamReader(sock.getInputStream()));
            ArrayList inBytes = new ArrayList(200);
            int ch = 0;
            boolean postMethod;
            methodLine = in.readLine();
            //if (traceRequests)
            //    Log.current.println("methodLine=" + methodLine);
            bodyLine = "";
            if (methodLine.startsWith("POST /"))
                postMethod = true;
            else
                postMethod = false;
            //if (traceRequests)
            //    Log.current.println("postMethod=" + postMethod);
            int ch1 = -1;
            int ch2 = -1;
            int ch3 = -1;
            int ch4 = -1;
            // Read the HTTP request headers.
            while (true) {
                ch = in.read();
                inBytes.add(new Integer(ch));
                ch1 = ch2;
                ch2 = ch3;
                ch3 = ch4;
                ch4 = ch;
                if (ch1 == '\r' && ch2 == '\n' && ch3 == '\r' && ch4 == '\n')
                    break;
                if ((! postMethod) &&
                    (! in.ready()) &&
                    ch1 == -1 &&
                    ch2 == -1 &&
                    ch3 == '\r' &&
                    ch4 == '\n') {
                    inBytes.add(new Integer('\r'));
                    inBytes.add(new Integer('\n'));
                    break;
            byte[] byteArray = new byte[inBytes.size()];
            for (int i = 0; i < inBytes.size(); i++) {
                Integer ich = (Integer) inBytes.get(i);
                byteArray[i] = ich.byteValue();
            String headers = new String(byteArray);
            if (postMethod) {
                String lcHeaders = headers.toLowerCase();
                int i = lcHeaders.indexOf("content-length: ");
                String contentLength = lcHeaders.substring(i + 16);
                int j = contentLength.indexOf("\r\n");
                contentLength = contentLength.substring(0, j);
                int bodyLen = (new Integer(contentLength)).intValue();
                for (int k = 0; k < bodyLen; k++) {
                    bodyLine = bodyLine + (new Character((char) in.read())).toString();
            String line = methodLine + "\r\n" + headers + bodyLine;
            if (traceRequests)
                Log.current.println(line);
            if (postMethod)
                processHttpPost();
            else
                if (line.startsWith("GET /"))
                    processHttpGet(line.substring(4));
                else {
                    Log.current.println("Invalid request = " + line);
                    throw new IOException();
         * Processes an HTTP GET method.
         * @param httpGetPath the path of the file to get.
         * @exception IOException if the file is not found.
        private void processHttpGet(String httpGetPath) throws IOException {
            int i = httpGetPath.indexOf(' ');
            if (i > 0)
                httpGetPath = httpGetPath.substring(0, i);
            Log.current.println(methodLine + " from " + sock.getInetAddress().getHostName());
            i = httpGetPath.indexOf("cg?");
            if (i > 0) {
                cycHtmlRequest(httpGetPath.substring(i + 3));
                return;
            notFoundPath = httpGetPath;
            i = httpGetPath.indexOf('/');
            if (i < 0 || map == null) {
                if (map == null || httpGetPath.endsWith(".jar")) {
                    for (int j = 0; j < dirs.size(); j++) {
                        String dir = (String) dirs.get(j);
                        String nativePath = dir + httpGetPath;
                        nativePath = nativePath.replace('/', File.separatorChar);
                        if (fileCache.containsKey(nativePath)) {
                            writeDataBytes((byte[]) fileCache.get(nativePath));
                            Log.current.println("...cached");
                            nbrCacheHits++;
                            nbrFilesServed++;
                            return;
                        try {
                            File f = new File(nativePath);
                            byte[] fileBytes = getBytes(new FileInputStream(f), f.length());
                            writeDataBytes(fileBytes);
                            if (fileCache.size() >= CACHE_CAPACITY)
                                fileCache.clear();
                            fileCache.put(nativePath, fileBytes);
                            Log.current.println("...from " + nativePath);
                            nbrFilesServed++;
                            return;
                        catch (IOException e) {
                throw new IOException();
            String jar = httpGetPath.substring(0, i);
            httpGetPath = httpGetPath.substring(i + 1);
            JarFile[] jfs = (JarFile[]) map.get(jar);
            if (jfs == null)
                throw new IOException();
            for (i = 0; i < jfs.length; i++) {
                JarEntry je = jfs.getJarEntry(httpGetPath);
if (je == null)
continue;
writeDataBytes(getBytes(jfs[i].getInputStream(je), je.getSize()));
nbrFilesServed++;
return;
throw new IOException();
* Processes an HTTP POST method.
* @exception IOException if the file is not found.
private void processHttpPost() throws IOException {
Log.current.println("POST " + bodyLine + " from " + sock.getInetAddress().getHostName());
cycHtmlRequest(bodyLine);
* Reads the specified number of bytes and always close the stream.
* @param in the file to be read for subsequent downloading.
* @param length the number of bytes to read from the file.
* @return An array of bytes from the file.
* @exception IOException if an error occurs when processing the file.
private byte[] getBytes(InputStream in, long length) throws IOException {
DataInputStream din = new DataInputStream(in);
byte[] bytes = new byte[ (int) length];
try {
din.readFully(bytes);
finally {
din.close();
return bytes;
* Sends the HTML request to Cyc.
* @param cycPath the portion of the URL which is given to the Cyc HTML server.
private void cycHtmlRequest(String cycPath) {
String request = sock.getInetAddress().getHostName() + "&" + cycPath + "#";
System.out.println("request=" + request);
ArrayList bytes = new ArrayList(10000);
try {
cycHtmlSocket = new Socket(cycHost, cycPort);
System.out.println("cycHost=" + cycHost + " cycPort=" + cycPort);
BufferedReader cycIn = new BufferedReader(new InputStreamReader(cycHtmlSocket.getInputStream()));
PrintWriter cycOut = new PrintWriter(cycHtmlSocket.getOutputStream(), true);
cycOut.println(request);
cycOut.flush();
int ch = 0;
while (ch >= 0) {
ch = cycIn.read();
bytes.add(new Integer(ch));
catch (Exception e) {
Log.current.printStackTrace(e);
byte[] byteArray = new byte[bytes.size()];
for (int i = 0; i < bytes.size() - 1; i++) {
Integer ich = (Integer) bytes.get(i);
byteArray[i] = ich.byteValue();
try {
writeTextBytes(byteArray);
catch (Exception e) {
Log.current.println(e.getMessage());
* Responds to the HTTP client with data content from the requested URL.
* @param bytes the array of bytes from the URL.
* @exception IOException if there is an error writing to the HTTP client.
public void writeDataBytes(byte[] bytes) throws IOException {
out.writeBytes("HTTP/1.1 200 OK\r\n");
out.writeBytes("Server: Cyc WebServer\r\n");
out.writeBytes("Connection: close\r\n");
out.writeBytes("Content-Length: " + bytes.length + "\r\n");
String prefix = (new String(bytes)).toLowerCase();
if (prefix.indexOf("<html>") > -1)
out.writeBytes("Content-Type: text/html\r\n\r\n");
else
out.writeBytes("Content-Type: application/java\r\n\r\n");
out.write(bytes);
out.flush();
* Respond to the HTTP client with text content from the requested URL.
* @param bytes the array of bytes from the URL.
* @exception IOException if there is an error writing to the HTTP client.
public void writeTextBytes(byte[] bytes) throws IOException {
out.writeBytes("HTTP/1.1 200 OK\r\n");
out.writeBytes("Server: Cyc WebServer\r\n");
out.writeBytes("Connection: close\r\n");
out.writeBytes("Content-Length: " + bytes.length + "\r\n");
out.writeBytes("Content-Type: text/html\r\n\r\n");
out.write(bytes);
out.flush();
* Gets properties governing the web server's behavior.
private void getProperties() {
port = DEFAULT_PORT;
String portProperty = System.getProperty("org.opencyc.webserver.port", "");
if (! portProperty.equalsIgnoreCase(""))
port = (new Integer(portProperty)).intValue();
Log.current.println("Listening on port " + port);
cycPort = DEFAULT_CYC_PORT;
String cycPortProperty = System.getProperty("org.opencyc.webserver.cycPort", "");
if (! cycPortProperty.equalsIgnoreCase(""))
cycPort = (new Integer(cycPortProperty)).intValue();
Log.current.println("Cyc connections directed to port " + cycPort);
String dirsProperty = System.getProperty("org.opencyc.webserver.dirs", "");
dirs = new ArrayList(3);
StringTokenizer st = new StringTokenizer(dirsProperty, ";", false);
while (st.hasMoreTokens()) {
String dir = st.nextToken();
dirs.add(dir);
trees = false;
String treesProperty = System.getProperty("org.opencyc.webserver.trees", "");
if (! treesProperty.equalsIgnoreCase(""))
trees = true;
traceRequests = false;
String traceRequestsProperty = System.getProperty("org.opencyc.webserver.traceRequests", "");
if (! traceRequestsProperty.equalsIgnoreCase("")) {
traceRequests = true;
Log.current.println("tracing requests");
* Adds transitive Class-Path jars to jfs.
* @param jar the jar file
* @param jfs the list of jar files to serve.
* @param dir the jar file directory.
* @exception IOException if an I/O error has occurred with the jar file.
private void addJar(String jar, ArrayList jfs, String dir) throws IOException {
Log.current.println("Serving jar files from: " + dir + jar);
JarFile jf = new JarFile(dir + jar);
jfs.add(jf);
Manifest man = jf.getManifest();
if (man == null)
return;
Attributes attrs = man.getMainAttributes();
if (attrs == null)
return;
String val = attrs.getValue(Attributes.Name.CLASS_PATH);
if (val == null)
return;
dir = dir + jar.substring(0, jar.lastIndexOf(File.separatorChar) + 1);
StringTokenizer st = new StringTokenizer(val);
while (st.hasMoreTokens()) {
addJar(st.nextToken().replace('/', File.separatorChar), jfs, dir);
* Administrative accessor method that obtains list of directories from which files are served.
public ArrayList getDirs() {
return dirs;
* Administrative method that updates the list of directories from which files are served.
public synchronized void setDirs(ArrayList dirs) throws IOException {
this.dirs = dirs;
fileCache.clear();
processDirectories();
* Administrative accessor method that obtains number of files served.
* @return The number of files served.
public long getNbrFilesServed() {
return nbrFilesServed;
* Administrative accessor method that obtains number of files served from cache.
* @return The number of files served from the cache.
public long getNbrCacheHits() {
return nbrCacheHits;
* Administrative method that clears the file cache.
public synchronized void clearFileCache() {
Log.current.println("Clearing file cache");
fileCache.clear();
nbrFilesServed = 0;
nbrCacheHits = 0;
* Processes the directories from which files are served, expanding jar trees if
* directed.
* @exception IOException if problem occurs while processing the jar files.
private void processDirectories() throws IOException {
if (dirs.size() == 0)
if (File.separatorChar == '\\')
dirs.add(DEFAULT_WIN_DIR);
else
dirs.add(DEFAULT_DIR);
Iterator directories = dirs.iterator();
while (directories.hasNext())
Log.current.println("Serving from " + directories.next());
if (trees) {
map = new HashMap();
for (int j = 0; j < dirs.size(); j++) {
String dir = (String) dirs.get(j);
String[] files = new File(dir).list();
for (int i = 0; i < files.length; i++) {
String jar = files[i];
if (!jar.endsWith(".jar"))
continue;
ArrayList jfs = new ArrayList(1);
addJar(jar, jfs, dir);
map.put(jar.substring(0, jar.length() - 4), jfs.toArray(new JarFile[jfs.size()]));
* Provides the command line interface for creating an HTTP server.
* The properties are:
* <pre>
* org.opencyc.webserver.port=<HTTP listening port>
* </pre>
* which defaults to 80.
* <pre>
* org.opencyc.webserver.cycPort=<Cyc connection port>
* </pre>
* which defaults to 3600.
* <pre>
* org.opencyc.webserver.dirs=<path>;<path> ... ;<path>
* </pre>
* with the argument enclosed in quotes if any path contains an
* embedded space.
* The default directory on Windows is C:
* and the default on other systems is / the default
* can be overridden with this property. By default, all files
* under this directory (including all subdirectories) are served
* up via HTTP. If the pathname of a file is <var>path</var> relative
* to the top-level directory, then the file can be downloaded using
* the URL
* <pre>
* http://<var>host</var>:<var>port</var>/<var>path</var>
* </pre>
* Caching of file contents is performed.
* <pre>
* org.opencyc.util.log=all
* </pre>
* If the all value is given, then all attempts to download files
* are output.
* <pre>
* org.opencyc.webserver.traceRequests
* </pre>
* If this property has any value, then the client HTTP requests are
* output.<p>
* <pre>
* org.opencyc.webserver.trees
* </pre>
* This property can be used to serve up individual files stored
* within jar files in addition to the files that are served up by
* default. If the property has any value, the server finds all jar files
* in the top-level directory (not in subdirectories). For each
* jar file, if the name of the jar file is <var>name</var>.jar, then any
* individual file named <var>file</var> within that jar file (or within
* the jar or zip files referenced transitively in the Class-Path manifest
* attribute, can be downloaded using a URL of the form:
* <pre>
* http://<var>host</var>:<var>port</var>/<var>name</var>/<var>file</var>
* </pre>
* When this property has any value, an open file descriptor and cached
* information are held for each jar file, for the life of the process.
* @param args an unused array of command line arguments.
public static void main(String[] args) {
Log.makeLog();
System.out.println("OpenCyc Web Server");
try {
// Launch thread to accept HTTP connections.
current = new WebServer();
current.start();
catch (IOException e) {
e.printStackTrace();
* Just keep looping, spawning a new thread for each incoming request.
public void run() {
try {
while (true) {
// Launch thread to process one HTTP request.
new Task(server.accept()).start();
catch (IOException e) {
e.printStackTrace();

JLundan,
I want to thank you for responding to the thread I started on the forum at java.sun.com. Your solution to my problem of needing to print the code of the html pages that the file I included generates was just what I was looking for. However, I have some further questions to ask, if you don't mind. To clarify my task I should say that your rephrasing of the problem is accurate: "You wan't to display the contents of the HTML file that the web server produces in response of client's request?"
Yes, this is what I need to do, but also it needs to display the source code of that html file that the server produces in response to the client's request. Also, in this case, I am the client requesting that the server return some html file, and I'm not sure where the server is. But the webserver.java file that I shared on the forum is on my local machine. I was wondering if I could modify this webserver.java file at my home so that any html file the server returns to me would automatically display the source code. This is a school project of mine and I am stuck on this one thing here.
Further, where would I put the "foo.html" file so it can be written to?
FileOuputStream fos = new FileOutputStream("foo.html");
fos.write(bytes);
fos.close();
Thanks so much for your help. I look forward to your response, at your convenience.
Regards

Where to get the source code of the owa_cookie.send procedure?

I want to know where you get the source code of the owa_cookie.send procedure? I can only get the header of this package from ...\RDBMS\ADMIN\pubcook.sql. Could you paste the whole source code here and then I can modify it to set the 'httponly' attribute? I also have a problem that after changing the package, how to use the package I changed? Does it still a system package here? Or it has been changed to an user-defined package in database and I need to execute the package on the database for the web server?
Thank you!

Hi Arun,
I am unable to see the pcui_gp components in the DTR ,I require this in order to get the source code of one of its component.
Can you please tell me the step by step procedure getting those pcui_gp components from J2ee engine to the dtr or NWDI.
If there are any documents on pcui_gp components exclusively please do forward to my mail id [email protected]
Thansk and Regards,
Anand.

Where to find the pcui_gp components ,How to get the source code of those

Hi All,
Can anybody tell the exact location wher the pcui_gp components will be stored if they are not appearing.
And another question is how to get the source code of the pcui_gp for customization.
anybody working on these compoents please help me.
answers will be rewarded.
thanks and regards,
anand

Hi Arun,
I am unable to see the pcui_gp components in the DTR ,I require this in order to get the source code of one of its component.
Can you please tell me the step by step procedure getting those pcui_gp components from J2ee engine to the dtr or NWDI.
If there are any documents on pcui_gp components exclusively please do forward to my mail id [email protected]
Thansk and Regards,
Anand.

Need to find the source code for java.util.LinkedList

Hello all,
I'm new to the forums and I actually need the LinkedList source file as well as all the source files for all Java packages and libraries. Please post a link here if you can, or email me at [email protected]
Thanks again!
copter_man

But those must be platform dependant, not really that
interesting to look at. I have never felt any need to
look at those at least.Wake up and smell the coffee, abbie! I read the source code all the time and constantly tell my students to do that, too.
1. Java source code is not platform dependent. The original poster wanted to look at linked list code, how could that be platform dependent?
2. It is the implementation of the SDK APIs, so by definition it is implementation dependent code, liable to change in a later version. So don't assume anything beyond what is claimed in the API documentation. However, sometimes the documentation is incomplete or ambiguous to you, and reading the source can provide some insight, however implementation dependent. (Light a candle or curse the darkness.)
3. Why read source code? It's a good way to learn how to program. You see something in the API and ask: how'd they do that? Or you realize you want to do something broadly similar, but you can't reuse the source code.
For example, Images are not Serializable, but suppose you want a small image that is part of an object to be serialized with the rest of the object without too much fuss (ie, without using javax.imageio). You notice ImageIcon is serializable, so you use it. (An ImageIcon has-an Image.) Then you wonder: how'd they do that? You read the source and then you know.
You live, you learn,
Nax

How can one encrypt the source code of a given web page(html, jsp, etc.) ?

Good Day! I'm just having a hard time of thinking how to encrypt the source code of a given web page(html, jsp, etc.) without affecting how it is previewed in an Internet Browser. What I plan is to disable the capabilities of some malicious Internet users of copying the source codes of my web pages by using the "View Source" option of Internet Explorer and the equivalent function in Netscape Navigator. Please somebody help me in this matter (I'm planning to use an IDEA algorithm using JCE)....
It would be big help if a running code is supplied.
Thank you very much in advance.
God Bless!!!
- Jonathan Untalan([email protected])

don't know theses softs. What i know about encrypted web pages, is that you need a secure socket connection (https).
Your web page will be ciphered, send to the user, and decipher by the browser with the signature file associated to your https connexion.
It isn't possible to encrypt your page directly, and then decrypt them when requested.
For the download time, only the server is responsible for this.
if it is overloaded, then it will slow down its upload.
Maybe you use some encryption method that require a lot of CPU time.
For summary : you can only cipher the pipe transport, but not the transported pages.
Good luck in your search.

How do I see the source code in a Digital Edition doc?

First let me say that as an author, I'm a huGe fan of DRM and anything else that protects my ability to feed my family by allowing me to control who can sell my copyrighted works.
But.....I'm creating a book that I hope will eventually be accessed through Adobe Digital Editions and I would like to see what the books look like from the backside. Usually I go into Sigil to have a look at the coding of books whose layout I like.... but because of DRM I can't see the source code in any of the books in my Digital Library. So, is there a way to take a peek at the coding of a Digital Library book? I don't care about the content, only how the CSS and HTML are done.
Thanks
RS

You're welcome

Where can I get the source code for sun classes?

Hello,
When ever you download sun's j2sdk, the archive always contains the source code for the entire sdk in a zip file called src.zip except the sun.xxx classes like sun.awt.print.PrintDialog or sun.awt.font.FontResolver.
For debugging purposes I need, if availabe, the source code of these classes which are not present in the src.zip.
Please can someone tell me if theses classes are available as source and can point me where I can find it cause I am searching for it but can't find it on the net.
Thank you
Carolin

Hey ChuckBing
And your way is the only way, right? No.What on earth is eating you? Highly sensitive today?
Where is the problem? There are two solutions of the question.
The one link I posted points directly to the sun source download link. The "readme" explains, yippie, the sun sources are contained. Easy, isn't it?
With the other one, you have to navigate at least through two other pages before you might find the link and only if you recognize that "Download JDK 5.0 source via SCSL/JRL" means the sun source code and not the sources contained in the JDK download. This is what I thought as I've seen this link the first time. Unfortunately there is no "readme".
I prefer the easy way, I dont want to earn a doctorate. Ok, you can say dont "play the woman", but I'm a woman and a blonde too;-)
But, let us stop the idle discussion here, please!
Nevertheless, thanks to you and [email protected] for answering.

Protecting the source code

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