Source code question

ok, first of all please dont slate me if this question is stupid, but is there a way to get the source code of some of the java classes so i can compile and edit it myself to suit my purposes?
thanks

i need to fiddle with the code of theJColorChooser,
i just need to get rid of the sample panel as itis
annoyingly big at the moment!Umm, if you don't like the preview panel, why don't
you just
[url=http://java.sun.com/docs/books/tutorial/uiswing/c
omponents/colorchooser.html#previewpanel]replace
it?Again, I reiterate. Mucking with the jdk source is
almost never a good idea.
It also prevents anyone else from using the fruits of your effort, as you're not allowed to distribute those changes to anyone.
And of course anyone with little or no experience with the language should assume that anything he does that fails is HIS fault, not that of the language.
in fact that's an extremely healthy attitude in general, and would prevent the vast majority of the stupid "proposals" to "fix bugs" by introducing or changing core language features which are almost universally caused by people misunderstanding what the language can do and how.

Similar Messages

JMStudio source code question / compilation problem/ what is JMFI18N ?

Hi everyone , I'm trying to make videocapture application and I was studying JMStudio source code but i have a few problems
1:
DirectSound Capture Supported = true
Exception on commit = java.io.IOException: Can't find registry file
DirectSoundAuto: Committed ok
JavaSound Capture Supported = true
JavaSoundAuto: Committed ok
Exception on commit = java.io.IOException: Can't find registry file
Found device Microsoft WDM Image Capture (Win32)
Querying device. Please wait...
Exception on commit = java.io.IOException: Can't find registry file
Exception on commit = java.io.IOException: Can't find registry filehow to repair it? i dont know where should i start !!
2:
JMFI18N - i cant find documentation for this class - i cant find this class - i know nothing about it and i cat fine anything any ideas?
thanks a lot
jan jarczyk

I know it's a little late, but maybe this source code can help some other programmers out:
package com.sun.media.util;
import java.io.PrintStream;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
public class JMFI18N
public static ResourceBundle bundle = null;
public static ResourceBundle bundleApps = null;
public static String getResource(String key)
    Locale currentLocale = Locale.getDefault();
    if (bundle == null) {
      try {
        bundle = ResourceBundle.getBundle("com.sun.media.util.locale.JMFProps", currentLocale);
      } catch (MissingResourceException e) {
        System.out.println("Could not load Resources");
        System.exit(0);
      try {
        bundleApps = ResourceBundle.getBundle("com.sun.media.util.locale.JMFAppProps", currentLocale);
      } catch (MissingResourceException me) {
    String value = "";
    try {
      value = (String)bundle.getObject(key);
    } catch (MissingResourceException e) {
      if (bundleApps != null)
        try {
          value = (String)bundleApps.getObject(key);
        } catch (MissingResourceException mre) {
          System.out.println("Could not find " + key);
      else
        System.out.println("Could not find " + key);
    return value;
}

Question about the Documentation Tags for Source Code

Hello,
I have a question about CVI's automatic source code documentation. My problem is that is seems like you need to write all documentation for a specific tag on one line. If you don't, a line break will be inserted when the documentation is displayed. Suppose I want to write a large amount of documentation for the function itself, using the HIFN tag. If I don't want linebreaks to be forced in the documentation, I need to write all this documentation on one single line, which kinda messes up my code. If I split the documentation over several HIFN tags, the documentation displayed to the user might look messed up because of all the linebreaks. Is there any escape character I can put at the end of a line, allowing me to split the documentation of several HIFN lines without forcing linebreaks in the documentation?
Thanks!
GEMIDIS - Innovating Display Technology
HQ Ghent, Belgium

This information is certainly useful. Note, however, that it can also be found in the documentation
Tag
Description
/// HIFN help text
Specifies the help text for the function. Use multiple /// HIFN tags to display help text for the function on separate lines. To separate help text with an empty line, use /// HIFN on a line by itself. You also can use HTML tags, but you must enclose the tags in <HTML><BODY></BODY></HTML> tags.
Example
/// HIFN SampleFunction returns the value of a control.
int SampleFunction (int controlID, ctrlType controlType, char label[], double *value)
SomeAction;

Some question when i read ip_filter 3.4.14 source code

when i read ip_filter 3.4.14 source code,i have some question.if you can give directions to me ,i will very appreciate for your generosity.
i read the source code ,and i know how the auther hooked the struct qinit ,my question is " did there have two struct ill_s 's ill_rq point to one struct queue_t?"
if not ,"did there have two struct queue_t 's qinfo
point to one struct qinit?"
if you have the elaborate introduce of the struct ill_s ,please send to me ,i will be very appreciate for your generosity. thank you very much!
your's
sincere
newchess

I don't have anything that just says Adobe Reader. I have Adobe Reader X,
and when I open it none of those options are shown. It says things like
open an existing file, Change pdf to word or excel, etc. No Edit, No
preferences, etc?
On Tue, Oct 21, 2014 at 5:05 PM, Gilad D (try67) <[email protected]>

A question about reading tomcat source code

Hi, everyone!
I just saw the tomcat source code, there is a method named "await" in StandardServer class. The comment of this method decribe that this method will wait util a proper shutdown command is received.
I'm confused about it after read this method.
In my opinion, this method create a server socket on port 8005 by default, and wait for "SHUTDOWN" string to only close the server socket which is listening on port 8005.
But I think this method is supposed to close all the server sockets which are listenning for client's request and belong to this server when port 8005 received "SHUTDOWN" string.
Thank you in advance.
Edited by: Garrett.Li on Oct 17, 2007 9:18 AM

about reading tomcat source code i cant get you man,

Very Easy Question: How to view source code of JAR file

Hi Experts,
1) Can we can see the content of JAR file?
2) How we can we see content of JAR file?
3) I have with me JAR file. It is sap.compcui_gpoadp~ObjectAndDataProvider.JAR. I have to make some changes in the JAR file source code. How I can find the source code?
I tried to see the source code using NWDS. However, I can not see the code.
Regards,
Gaurav

>
Gary wrote:
> Can I make changes in the source code of JAR file? Can I make changes in the code?
You cannot do this by simple repacking/rearchiving of JAR, because it contains special descriptor with fingerprint. In general, JAR is unmodifiable, however, you can create a new one with modified sources.
You can try to import the JAR in some Java project in Eclipse, for example. Then make your changes and use the Eclipse's Export JAR wizard in order to repack the modified source Java files in a new JAR.
>
Gary wrote:
> Can I rename the JAR file and still it will usable? Please confirm.
I general, yes, the operation is allowed. However, you cannot do this with JAR deployed on some J2EE server or Portal, for example. Because there are references to it.
>
Gary wrote:
> Please let me know if by any chance I can see the content of JAR file in NWDS.
Yes, sure. Use Import from Archive wizard in Eclipse. Or add the JAR in the class path of some Java project and Eclipse will show you the content of it.
BR, Sergei

ABAP source code is written "by hand" or automatically?

Hi all,
I would like to modify the report "Open Items - Vendor Due Date Forecast" created by T. S_ALR_87012084.
With SE93 i found the name of the program RFKOFW00, which are referring to the T. S_ALR_87012084. T. S_ALR_87012084. (Parameter: D_SREPOVARI-REPORT = RFKOFW00) and with SE38 i have seen the ABAP source code of the program RFKOFW00.
My questions are:
1) The ABAP source code of the program RFKOFW00 is written "by hand", or automatically by one of the SAP tools, for example Report Painter/Writer, SAP queryu2026..? It seems to me that it is written "by hand". Is this true?
2) In general, how can i tell if a SAP ABAP program is written "by hand" or automatically by one of SAP tools? I know that one way to understand is that source code, written by hand is more clear.
Is there a way to understand, more accurate, more secure?
Thanks in advance
Serena

Hi ,
if the code is automatically created, there will be a comment line in the beginning of the code which says
Generated function module for ..........
Please do not modify or copy this function module
Regards

How to view RUN_REPORT_OBJECT built-in source code

Ps help.
I'm creating a batch report that will execute from PL/SQL not forms - so I can't use this built-in directly on my PL/SQL procedure. How do I view RUN_REPORT_OBJECT source code and that of the functions that it calls.
Thanks
Khombi

good question for the report forum :
Reports

How to use Source Code Control for Large Application?

Hi, All!
I would like to collect knowledge about "best practice" examples for using Source Code Control and project organization for relative large application (let's say approx 1000 SubVIs).
Tools used:
LabVIEW 8.0
CVS Server
PushOK CVS Proxy Client
WinCVS
With LabVIEW 8 we can organize large project pretty well. This described in article Managing Large Applications with the LabVIEW Project.
I have read this article too: Using Source Control Software with LabVIEW In this Article Source Safe used, but with PushOK all looks nearby the same and works (some tricks for compare function are required).
Example. Two developers working together on same project. Internally project is modular, so one developer will work with module "Analysis", and another one with "Configuration" without interferences. These modules placed into Subfolders as shown in example above.
Scenario 1:
Developer A started with modification of module "Analysis". Some files checked out. He would like to add some SubVIs here. So, he must also perform check out for the project file (*.lvproj), otherwise he cannot add anything into project structure.
Developer B at the same time would like to add some new functions into module "Configuration". He also needed to check out project file, but this file already checked out by Developer A (and locked). So, he must wait until lvproj file will be checked in. Another way is mark *.lvproj files as text files in PushOK, but then one of developers will get conflict message by checking in and then merging will be necessary. This situation will coming very often, because in most cases *.lvproj file will be checked out all the time.
Question: Which practice is better for such situation? Is Libraries better than folder for large project?
Scenario 2:
Developer C joined to the team. First, he must get complete project code for starting (or may be at least code of one Library, which assigned to him).
Question: How it can be done within LabVIEW IDE? Or WinCVS (or other SCC UI) should be used for initial checkout?
Scenario 3:
Developer D is responcible for Build. Developers A,B,C have added lot of files into modules "Analysis", Configuration" and "FileIO". For building he need to get complete code. If our project splitted into folders, he should get latest *.lvproj first, then newly added SubVIs will appear in Project Explorer, then he should expand tree, select all SubVIs and get latest versions for all. If Project organized in Libraries, he must do the same for each library, isn't?.
Question: Is this "normal way", or WinCVS should be used for this way? In WinCVS its possible with two mouseclicks, but I prefer to get all code from CVS within LabVIEW IDE recursively...
That was a long post... So, if you already working with LabVIEW 8 with SCC used for large project, please post your knowledge here about project structure (Folders or Libraries) and best practices, its may be helpful and useful for all of us. Any examples/use cases/links etc are appreciated.
Thank you,
Andrey

Regarding your scenarios:
1. Using your example, let's say both developers checked out version 3
of the project file. Assuming that there are only files under the
directories in the example project, when Developer A checks in his
version of the project, there will be new files in one section of the
project separate from where Developer B is working. Developer B,
notices that there is now a version 4 of the project. He needs to
resolve the changes so will need to merge his changes to the latest
version of project file. Since the project file is a text file, that is
easy to do. Where an issue arrises is that after Developer B checks in
his merged changes, there is a revision 5. When Developer A and B go to
make another change, they get the latest version which will have the
merged changes to the project file but not the referenced files from
both Developer A and B. So when A opens version 5, he sees that he is
missing the files that B checked in and visa versa. Here is where the
developers will needs to manually use the source control client and,
external to LabVIEW, get those new files.
Where libraries help with the above scenario is that the library is a
separate file from the project so changes made to it outside of the
project do not require the project to be modified. So this time, the
developers are using a single project again which time time references
two libraries. The developers check out the libraries, make changes to
the libraries, and then check those changes in. So when each developer
opens the project file, since it references the project file, the
changes to the library will be reflected. There is still the issue of
the new files not automatically coming down when the latest version of
the library is obtained. Again, the developers will needs to manually
use the source control client and, external to LabVIEW, get those new
files. In general, you should take advantage of the the modularity that
libraries provide.
2. As noted in the above scenario, there is no intrinsic mechanism to
get all files referenced by a LabVIEW project. Files that are missing
will be noted. The developer will then have to use the source control
provider's IDE to get the initial contents of the project (or library).
3. See above scenarios.
George M
National Instruments

How to read the Java source code (in Netbeans)

I use OS X10.5.5, NetBeans 6.1 and JSE 6 on a 64 bit mac.
When I downloaded NB6.1 it had JSE 5 as it's default (and only) java platform. I ran Software Update to get Java 6 from Apple, used the Java Prefrences utitlity to set JSE6 as default. In NB I added the JDK6 platform, registered the JDK6 javadocs and noticed that I also have the option of registering the Java source code.
I have three questions:
1) How do I make JDK6 the default in NetBeans. The JDK5 keeps being default after I did the steps above and I don't see anywhere to change that.
2) How do I read the Java 6 source code? I can see sun provides [source code| http://download.java.net/jdk6/] for their supported platforms. I dont see Apple doing the same for its JDK port. What would I need to do to get to read the java SE6 sources? or is it actually hiding somewhere in the /System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home hierarchy?
3) Where does the JVM look for the binary code to run when I make a call to, say java.util.ArrayList or any other library. In my naivety I would have assumed it would be a .class file somewhere in the java Home folder, but I don't see anything like it.
thanks in advance,
chris

This is taken from the help included with netbeans. In response to question 1.
By default, the IDE uses the version of the Java SE platform (JDK) with which the IDE runs as the default Java platform
for compilation, execution, and debugging. You can view your IDE's JDK version by choosing Help > About and clicking the
Detail tab. The JDK version is listed in the Java field.
You can run the IDE with a different JDK version by starting the IDE with the --jdkhome jdk-home-dir switch on the command line
or in your IDE-HOME/etc/netbeans.conf file. For more information, see IDE Startup Parameters.
In the IDE, you can register multiple Java platforms and attach Javadoc and source code to each platform. For example, if you
want to work with the new features introduced in JDK 5.0, you would either run the IDE on JDK 5.0 or register JDK 5.0 as a
platform and attach the source code and Javadoc to the platform.
In , you can switch the target JDK in the Project Properties dialog box. In , you have to set the target JDK in the Ant script itself,
then specify the source/binary format in the Project Properties dialog box.
To register a new Java platform:
Choose Tools > Java Platforms from the main window.
Click New Platform and select the directory that contains the Java platform. Java platform directories are marked with a
in the file chooser.
Use the Sources and Javadoc tabs to attach Javadoc documentation and source code for debugging to the platform.
Click Close.
To set the default Java platform for a standard project:
Right-click the project's root node in the Projects window and choose Properties.
In the Project Properties dialog box, select the Libraries node in the left pane.
Choose the desired Java platform in the Java Platform combo box.
Switching the target JDK for a standard project does the following:
Offers the new target JDK's classes for code completion.
If available, displays the target JDK's source code and Javadoc documentation.
Uses the target JDK's executables (javac and java) to compile and execute your application.
Compiles your source code against the target JDK's libraries.
If you want to register additional Java platforms with the IDE, you can do so by clicking the Manage Platforms button.
Then click the Add Platform button and navigate to the desired platform.
To set the target Java platform for a free-form project:
In your Ant script, set the target JDK as desired in the javac, java, and javadoc tasks.
Right-click the project's root node in the Projects window and choose Properties.
In the Sources panel, set the level of JDK you want your application to be run on in the Source/Binary Format combo box.
When you access Javadoc or source code for JDK classes, the IDE searches the Java platforms registered in the
Java Platform Manager for a platform with a matching version number. If no matching platform is found, the IDE's default platform is used instead.
See Also
Managing the Classpath
Declaring the Classpath in a Free-Form Project
Stepping Through Your Program
Legal Notices

Function Module to get ABAP source code for a specific version

Hi all
Is there a function module that I can use to get the source code of another function module at a specific version?
For example, can I call a function module passing in "FM_NAME" and "FM_VERSION" and have it return the lines of code associated with that object?
Thanks in advance.
Stuart

Thanks guys
That's incredibly helpful! I have one more question that I just thought of last night...
Is there a way to hook into the code activation process? I want to be able to take a snapshot of the ABAP source code at each point when it is activated for use in another system, but need to be able to intercept this event and get the source code at that point in time.
Any ideas?
Thanks!

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

ABAP WD, Read the source code of a html page

Hi all,
I have the URL link of .jsp page and I want to get the source code generated by this page to extract some data for my web dynpro.
How do i solve this?
Thanks

Hi Antonio,
not sure if i understand the question properly.
You want to read html content of http site rendered via jsp.
You can use cl_http_client
to write a simple http client tool.
This tool opens the page. The html content is available to this class.
You can extract the content here.
See the attribute 'response' after making a call.
regards
Phil.

Is there any differnce between the Numeric Limit Test source code from TestStand 3.0 to TestStand 3.1? How to get the source code for the Numric Limit Test for both the versions?

I need to know the differnece between the Numeric Limit Test between the TestStand version 3.0 to 3.1. If there is any differnec in the source code how to find it out? If somebody has the code can you share it?
Thanks,
Jeyan

Hi,
I don't believe there are any differences between the two versions. But you can check the source code for the Numeric Limit Test in TestStand\Components\NI\StepTypes\CommonSubsteps. But the main part of the step is the Code Module and this bit the users supplies this.
What has prompted this question?
Regards
Ray Farmer
Regards
Ray Farmer

If I Use JavaFX to Create a Game Do I Have to Release the Source Code?

Hello,
I've asked this question before, but I just thought I would try it again now
that version 1.0 is out.
If I Use JavaFX to Create a Game Do I Have to Release the Source Code?
Thanx in advance.

Could you please point me to a resource describing "the JavaFX Runtime license"? I'm trying to find answers to the following questions:
1. I'd like to use Scenario.jar from the JavaFX project in a desktop app that is not using Webstart and is not an applet. Will I be able to ship the jar with my software?
2. Can JavaFX applications be distributed as commercial software in the absence of a Web connection?
What's not clear to me is which is the real license for Scenario.jar (as shipped with JavaFX). Is it the one in openjfx-compiler's trunk, or the one that comes with the JavaFX SDK (which is very vague about redistribution)?

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