Java util package & UndirectedGraph

Hi Everyone!
I am trying to write a java program, which will use the Java util package to implement the Undirected Graph. I do not know from where I sould start, but I already wrote the interface.
I had the same problem when I used the java's built in facility to implement the Linked List. Although it is very simple, it took me a while to finish coding the linked list problem. I think its becaue I am new to Java.
Any help will be greatly appreciated.
Thanks!

Write down for yourself what a (undirected) graph is, or read it over in your textbook. Then underline the nouns in your (or the books) definition of a graph. Try to create classes from those nouns. If your not sure about your approach, then post it here first. Responses are usually given pretty fast.
Good luck.

Similar Messages

JRE 1.6 missing/can't find java/util package

I installed Sun's JRE1.6 to mitigate the DST issue a couple
of months ago. In the past few days, my clients report when, trying
access web-services the Java Compiler throws an exception dealing
with the inability to access the java/util package.
One solution (in Japanese) purported to say that if one adds
the switch:
-Djmx.invoke.getters=true
This can help mitigate the issue (after a restart). I did for
a couple of hours but the services began failing again.
### Exception Code ###
coldfusion.jsp.CompilationFailedException: Errors reported by
Java compiler: Found 2 system errors: *** Error: Could not find
package "java/util" in:
/opt/coldfusionmx7/runtime/jre/bin/jre1.6.0/lib/ext/sunjce_provider.jar
[filepath]coldfusionmx7/runtime/jre/bin/jre1.6.0/lib/ext/sunpkcs11.jar
[filepath]coldfusionmx7/runtime/jre/bin/jre1.6.0/lib/ext/dnsns.jar
[filepath]coldfusionmx7/runtime/jre/bin/jre1.6.0/lib/ext/meta-index
[filepath]/coldfusionmx7/runtime/jre/bin/jre1.6.0/lib/ext/localedata.jar
/opt/coldfusionmx7/wwwroot/WEB-INF/classes
[filepath]/coldfusionmx7/wwwroot/WEB-INF/lib/cfmx_bootstrap.jar
/opt/coldfusionmx7/wwwroot/WEB-INF/lib/cfx.jar
[filepath]/coldfusionmx7/wwwroot/WEB-INF/lib/commons-beanutils.jar
[filepath]/coldfusionmx7/wwwroot/WEB-INF/lib/commons-collections.jar
/opt/coldfusionmx7/wwwroot/WEB-INF/lib/js.jar
[filepath]/coldfusionmx7/lib/updates/chf700003.jar
/opt/coldfusionmx7/lib/ant-launcher.jar ....
### EOF ###
SysInfo:
Solaris 2.8
CFMX Ent 7.0.0
Java Version 1.6.0b.105

Thx Ian - you're correct. I've incepted 1.4.12 and
web-services are up and running *note to readers: watch your
permissons on the new files - ensure CFSvr "user" has access to new
files.
This technote details how to upgrade the JVM:
http://kb.adobe.com/selfservice/viewContent.do?externalId=2d547983&sliceId=2
Thank you both. DjlR

Is java.util package is available in J2SDK1.4.1_01 version ?.

in my machine ,i have j2sdk1.4.1_01 version jdk.when i am using any util classes in my program ,those doesnt compile.it gives the error regarding to java.util classes. can u help me.....?pls...... ,how to solve this problem?
i am eagerly waiting for ur reply.......
i import the util package into my program.
at command prompt
javap java.util.List
even i tried with javap command to see the methods in java.util.List class. it gives me error "no class is available". but it works fine for the remaining packages.

yeah....i am using correct version. i am working on windows 2000 professional OS.
i looked at the version also. it is showing
C:\SivaWorkArea\Mislaneous>java -version
java version "1.4.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-b21)
Java HotSpot(TM) Client VM (build 1.4.1-b21, mixed mode)
thanks & regards,
siva kumar.

Bug on native code of OJVM java.util.zip.CRC32.updateBytes(CRC32.java)

I want to unzip OpenOffice 1.0 files inside the OJVM but it fails into the native method java.util.zip.CRC32.updateBytes(CRC32.java).
The first execution of the code runs OK, but the second not.
After a long wait it shutdown the connection and the oracle trace file shows an stack trace like this:
*** 2003-04-18 11:31:31.926
*** SESSION ID:(17.97) 2003-04-18 11:31:31.926
java.lang.IllegalArgumentException
at java.util.zip.CRC32.updateBytes(CRC32.java)
at java.util.zip.CRC32.update(CRC32.java)
at java.util.zip.ZipInputStream.read(ZipInputStream.java)
at oracle.xml.parser.v2.XMLByteReader.fillByteBuffer(XMLByteReader.java:354)
at oracle.xml.parser.v2.XMLUTF8Reader.fillBuffer(XMLUTF8Reader.java:142)
at oracle.xml.parser.v2.XMLByteReader.saveBuffer(XMLByteReader.java:448)
at oracle.xml.parser.v2.XMLReader.fillBuffer(XMLReader.java:2012)
at oracle.xml.parser.v2.XMLReader.skipWhiteSpace(XMLReader.java:1800)
at oracle.xml.parser.v2.NonValidatingParser.parseMisc(NonValidatingParser.java:305)
at oracle.xml.parser.v2.NonValidatingParser.parseProlog(NonValidatingParser.java:274)
at oracle.xml.parser.v2.NonValidatingParser.parseDocument(NonValidatingParser.java:254)
at oracle.xml.parser.v2.XMLParser.parse(XMLParser.java:225)
at com.prism.cms.frontend.EditPropertiesActions.processUpload(EditPropertiesActions.java:1901)
Exception signal: 11 (SIGSEGV), code: 1 (Address not mapped to object), addr: 0x6d3a74a0, PC: [0x40263600, eomake_reference_to_eobjec
t()+80]
Registers:
%eax: 0x54a54000 %ebx: 0x40429c20 %ecx: 0x54a546bf
%edx: 0x6d3a7478 %edi: 0x402b27d0 %esi: 0x45c718ac
%esp: 0xbfffbf20 %ebp: 0xbfffbf48 %eip: 0x40263600
%efl: 0x00010206
The code of the java method is:
public static void processUpload(String id_page, String longname,
String filename, String filetype,
String s00)
throws SQLException {
Integer p_id = new Integer(id_page);
String toSource;
XMLDocument doc = null;
DOMParser theParser = null;
InputStream XSLStream = null;
BufferedWriter out = null;
#sql { select path||name||'.html' into :toSource from pages where id_page=:p_id };
if ("Cancel".equalsIgnoreCase(s00)) {
Jxtp.redirecUrl("/dbprism/ldoc/live/edit.html?p_source="+toSource);
return;
if ("no-file".equals(filename) && "no-contenttpye".equals(filetype)) {
Jxtp.redirecUrl("/dbprism/ldoc/live/edit.html?p_source="+toSource);
return;
if ("xml".equalsIgnoreCase(filetype))
#sql { call CMSj.moveFromUpload(:filename,:p_id) };
else if ("sxw".equalsIgnoreCase(filetype)) {
XSLProcessor processor = new XSLProcessor();
XSLStylesheet theXSLStylesheet = null;
BLOB locator = null;
// open sxw file, it will be in zip format with a file named content.xml
// then convert content.xml to document-v10.dtd with an stylesheet
#sql { select blob_content into :locator from wpg_document where name = :filename for update };
ZipInputStream zin = new ZipInputStream(locator.binaryStreamValue());
ZipEntry entry;
try {
while((entry=zin.getNextEntry())!=null)
if ("content.xml".equalsIgnoreCase(entry.getName())) {
Integer newVersion;
CLOB dstDoc;
CMSDocURLStreamHandlerFactory.enableCMSDocURLs();
try {
URL inUrl = new URL("cms:/stylesheets/sxw2document-v10.xsl");
XSLStream = inUrl.openStream();
// Create the Stylesheet from the stream
theXSLStylesheet = processor.newXSLStylesheet(XSLStream);
// Stores the document processing it with the given stylesheet
theParser = new DOMParser();
theParser.setValidationMode(theParser.NONVALIDATING);
theParser.setBaseURL(new URL("cms:/dtd/"));
theParser.parse(zin);
doc = theParser.getDocument();
#sql { SELECT NVL(MAX(version),0)+1 INTO :newVersion FROM content
WHERE cn_id_page = :p_id };
#sql { INSERT INTO content( cn_id_page, version, owner, status, source_file,
file_size, content, created, modified, created_by,
modified_by)
VALUES ( :p_id, :newVersion, sys_context('cms_context','user_id'),
'Uploaded', :filename, 0 , EMPTY_CLOB(), SYSDATE, SYSDATE,
sys_context('cms_context','user_id'),
sys_context('cms_context','user_id')) };
#sql { SELECT content INTO :dstDoc FROM content
WHERE cn_id_page = :p_id AND version = :newVersion for update };
#sql { call DBMS_LOB.trim(:inout dstDoc,0) };
out = new BufferedWriter(dstDoc.getCharacterOutputStream(),dstDoc.getChunkSize());
processor.processXSL(theXSLStylesheet, doc, new PrintWriter(out));
#sql { delete from wpg_document where name=:filename };
} catch (SAXParseException spe) {
throw new SQLException("processUpload SAXParseException: "+xmlError(spe));
} catch (SAXException se) {
throw new SQLException("processUpload SAXException: "+se.getLocalizedMessage());
} catch (XSLException xsle) {
throw new SQLException("processUpload XSLException: "+xsle.getLocalizedMessage());
} finally {
if (XSLStream!=null)
XSLStream.close();
if (theParser!=null)
theParser = null;
if (out!=null) {
out.flush();
out.close();
zin.close();
} catch (IOException ioe) {
throw new SQLException("processUpload IOException: "+ioe.getLocalizedMessage());
} finally {
if (XSLStream!=null)
XSLStream = null;
if (out!=null)
out = null;
if (zin!=null)
zin = null;
Jxtp.redirecUrl("/dbprism/ldoc/live/edit.html?p_source="+toSource);
Basically it takes the content from a BLOB column of the wpg_document table, unzip it using java.util.zip package, look for the file content.xml and parse it using Oracle XML toolkit.
Using an open source utility which replace java.util.package (http://jazzlib.sourceforge.net/) it works perfect because is a pure java application.
Best regards, Marcelo.
PD: I am using Oracle 9.2.0.2 on Linux.

The cause of errors was a dying Westen Digital drive, specially the 48G partition reserved only for $ORACLE_BASE (/dev/sdb3 mounted on /opt/oracle).
A simple quick scan of unmounted partition (badblocks -v /dev/sdb3) reported more than thousand new bad blocks (compared to the last scan six months ago). Although I strongly believe, specially in the case of WDC drives, that the best utility to "repair" bad blocks is the one that opens a window and prints the message: "Go to the nearest shop and buy a new drive", I was very curious to prove my suspicion just on this drive. After zero-filling the partition with dd, then formatting it (mke2fs -cc) and mounting again, the 11g installation and database creation (on the same partition) successfully completed, performing fast and smoothly. To make sure it was not a casual event, I repeated the installation once again with full success. The database itself is working fine (by now). Well, the whole procedure took me more than four hours, but I'm pretty satisfied. I learned once again - stay away from Western Digital. As Oracle cannot rely on dying drive, my friend is going tomorrow to spend a 150+ euro on two 250G Seagate Barracudas and replace both WDC drives, even though the first drive seems to be healthy.
In general there is no difference between loading correct data from good disk into bad memory and loading the incorrect data from dying disk into good memory. In both cases the pattern is damaged. For everyone who runs into the problem similar to this, and the cause cannot be easily determined, the rule of thumb must be:
1. test memory and, if it shows any error, check sockets and test memory modules individually
2. check disks for bad blocks regardless of the result of memory testing
Therefore I consider your answer being generally correct.
Regards
NJ

Cannot import java.util.concurrent.locks ... WHY?

Why is Xcode unable to find the java.util.concurrent.locks package. The class browser knows it exists. For example the entry for the ReentrantLock class looks like this in the browser class window:
ReentrantLock (java.util.concurrent.locks)
Xcode knows about other java.util packages such as java.util.ResourceBundle which I have been accessed successfully in other parts of my projecgt.
Here is a source file and the resulting compiler error:
The source file:
// Foo.java
import java.util.ResourceBundle;
import java.util.concurrent.locks;
public class Foo { }
The compiler error:
compile:
Compiling 2 source files to /Users/Terry/Desktop/JAVA/PROJECTS/Logic/bin
/Users/Terry/Desktop/JAVA/PROJECTS/Logic/src/Foo.java:3: cannot find symbol
symbol : class locks
location: package java.util.concurrent
import java.util.concurrent.locks;
^
1 error
BUILD FAILED
Help or hints would be greatly appreciated!

Well the reason to your problem is very simple... java.util.concurrent.locks is a package... Not a class.
if you want to import a specific class, the class should be written at the end like you did for import java.util.ResourceBundle; but if you want to import a whole package you need to add the little star at the end :
import java.util.concurrent.locks.*;
Or else, you only import the class you need :
import java.util.concurrent.locks.ReentrantLock;

Java.util

Hello,
I've been programming in java since about Christmas and everything was going (more or less) fine. A few weeks ago I left it for a while but then went back to it and saw that alot of my programmes that were working fine weren't working anymore. I couldn't run or compile any of them.
After a while I noticed that all the programmes that weren't working anymore involved localization and classes from the java.util package (ResourceBundles, Locale...). Frankly, I'm extremely confused because to me this makes no sense at all. I know they were all working perfectly before.
Unfortunately I don't know much about the internal workings of java so is it possible that something could have gone wrong with some file or tool responsable for java.util? I'm not quite sure how this could have happened (I'm not really in the habit of randomly deleting files) but it's all I can think of. Unless I'm somehow imagining things or someone's been messing with my pc. Or maybe I'm doing strange things in my sleep...
Any help would be greatly appreciated.
Thanks,
Phil.

Or maybe I'm doing strange things in my sleep...Many people do strange things in their sleep :)
Have you installed new software, like the J2ME toolkit? J2ME is kind of like a thinned version of Java for small devices like palm computers and mobile phones. Check that it is the javac from your j2se SDK installation that you are using to compile.

Using ExecutorService class from java.util.concurrent package

Dear java programmers,
I have a question regarding the ExecutorService class from java.util.concurrent package.
I want to parse hundreds of files and for this purpose I'm implementing a thread pool. The way I use the ExecutorService class is summarized below:
ExecutorService executor = Executors.newFixedThreadPool(10);
        for (int i = 0; i < 1000; i++){
            System.out.println("Parsing file No "+i);
            executor.submit(new Dock(i));
        executor.shutdown();
        try {
            executor.awaitTermination(30, TimeUnit.SECONDS);
        } catch (InterruptedException ex) {
            ex.printStackTrace();
        executor.shutdownNow();However, the code snippet above creates all the 1000 threads (Dock objects) at once and loads them to the executor, and thus I'm worrying about memory leak. I haven't tested it on 1000 files yet but just on 50 small ones, and even if the program prints out "Parsing file No "+i 50 times at once, it executes normally the threads in the background.
I guess the write way would be to keep the number of active/idle threads in the executor constant (lets say 20 if the thread pool's size is 10) and submit a new one whenever a thread has been finished or terminated. But for this to happen the program should be notified someway whenever a thread is done. Can anybody help me do that?
thanks in advance,
Tom

Ok I found a feasible solution myself although I'm not sure if this is the optimum.
Here's what I did:
        ExecutorService executor = Executors.newFixedThreadPool(10);
        Future<String> future0, future1, future2, future3, future4, future5, future6, future7, future8, future9;
        Future[] futureArray = {future0 = null, future1 = null, future2 = null, future3 = null, future4 = null, future5 = null,
        future6 = null, future7 = null, future8 = null, future9 = null};
        for (int i = 0; i < 10; i++){
            futureArray[i] = executor.submit(new Dock(i));
        }I created the ExecutorService object which encapsulates the thread pool and then created 10 Future objects (java.util.concurrent.Future) and added them into an Array.
For java.util.concurrent.Future and Callable Interface usage refer to:
[http://www.swingwiki.org/best:use_worker_thread_for_long_operations]
[http://www.particle.kth.se/~lindsey/JavaCourse/Book/Part1/Java/Chapter10/concurrencyTools.html]
I used a Future[] Array to make the code neater. So after that I submitted -and in this way filled up- the first 10 threads to the thread pool.
        int i = 9;
        while (i < 1000){
            for (int j = 0; j < 10; j++){
                if (futureArray[j].isDone() && i < 999){
                    try{
                        i++;
                        futureArray[j] = executor.submit(new Dock(i));
                    } catch (ExecutionException ex) {
                        ex.printStackTrace();
                    } catch (InterruptedException ex) {
                        ex.printStackTrace();
            try {
                Thread.sleep(100); // wait a while
            } catch(InterruptedException iex) { /* ignore */ }
        executor.shutdown();
        try {
            executor.awaitTermination(60, TimeUnit.SECONDS);
        } catch (InterruptedException ex) {
            ex.printStackTrace();
        executor.shutdownNow();
    }Each of the future[0-9] objects represents a thread in the thread pool. So essentially I'm check which of these 10 threads has been finished (using the java.util.concurrent.Future.isDone() method) and if yes I replenish that empty future[0-9] object with a new one.

Import the classes in the package java.util

I haven't taken a class in two years so I have ideas but am unsure of myself, and I most likely am way off base, but is this how you import the classes in the package java.util
import java.util.*;
I would appreciate anyone's help. I have a lot of questions.
Thanks,
rp

My assignment is below so that you will know exactly what I am asking. I am being asked to create an instance of LinkedList. I know that this is a part of the java.util. So when you create an instance of LinkedList would that be similar to instance variables? or am I misunderstanding something. I have several ideas, so I will start with the first one.
LinkList();
I really appreciate your taking the time to answer my questions to help me to rebuild my confidence in doing this.
Thanks,
// 2. import the classes in the package java.util
public class MyProgram
     public static void main(String [] args)
          // 3. Create an instance of LinkedList
          // 4. add 5 entries to the list so that it contains
          //     Ann, Bart, Carl, Dirk, Zak
          // 5. display the list on one line using a loop and ADT list methods
          System.out.println("\n\n3. ");
          // 6. display the list using one println
          System.out.println("\n\n4. ");
          // 7. create a ListIterator object for the list
          // 8. display the list on one line using the iterator
          System.out.println("\n\n6. ");
          // 9. restore the iterator to the first item in the list
          // 10. retrieve and display the first item in the iteration,
          //      then advance the iterator to the next item
          System.out.println("\n\n8. ");
          // 11. advance the iterator to the end of the list without displaying anything;
          //      do not use the length of the list
          // 12. display the last item in the list
          System.out.println("\n\n10. ");
          // 13. move back to the beginning of the list without displaying anything;
          //      do not use the length of the list
          // 14. display the first item in the list
          System.out.println("\n\n12. ");
          // 15. advance the iterator to the end of the list without displaying anything;
          // 16. advance the iterator - what happens?
          System.out.println("\n\n14. ");
          // 17. advance the iterator within a try block; catch the exception, display a message,,
          //      and set the iterator back to the beginning of the list.
          System.out.println("\n\n15. ");
          // 18. what does nextIndex and previousIndex return?
          System.out.println("\n\n16. ");
          // 19. move the iterator to the third item in the list; if you were to
          //      execute next(), the third item would be returned and the iterator
          //      would advance to the 4th item.
          System.out.println("\n\n17. ");
          // 20. add the string "New" to the list; where is it inserted relative to
          //      the current item in the iteration?
          System.out.println("\n\n18. ");
          // 21. remove the current item; what happens?
          System.out.println("\n\n19. ");
          // 22. display the current item in the list without advancing the iteration
          //      in 2 ways, as follows:
          // 22A - using only iterator methods
          System.out.println("\n\n20A. ");
          // 22B using an iterator method and list methods
          System.out.println("\n\n20B. ");
          // 23. advance the iterator and remove the current item; which one is removed?
          System.out.println("\n\n21. ");
          // 24. move the iterator back and remove the current item; which one is removed?
          System.out.println("\n\n22. ");
          // 25. move the iterator to the first item in the list and change it to "First"
          System.out.println("\n\n23. ");
     } // end main
} // end MyProgram

USage of import java.util.* & using another package

When we use import java.util.*; from where does JAVA take the class that are related to util, when I did search for "util" in my machine, I got about 50 results for folders named util and also some where in a folder called "java" when I opened it it did not have the classes, that I was expecting. So I am not clear where does it get the class files from. This is not only for this but for any import commands like import java.io.*;
When we get another package or source code which was written in java and want to use it in our code where do we have keep the files ? eg. i have the java code that i m writing in c:\java then do I put all the downloaded related files in that folder and then run the code ? or i keep a folder inside java folder and then import them into my code ?
please do advice.
Thanks in advance.

When we use import java.util.*; from where does JAVA
take the class that are related to util,It means when you use a classname in your code, and that classname is neither in the same package as the class you're writing, nor imported specifically by classname, that it will search for it.
Where it searches is every folder called util whose parent folder is called java which in turn is at the root level of one of the classpath elements. That is, if classpath contains "A" and "B", and you refer to a class called "Foo", then it will look for "A/java/util/Foo.class" and "B/java/util/Foo.class".
search for "util" in my machine, I got about 50
results for folders named util and also some where in
a folder called "java" when I opened it it did not
have the classes, that I was expecting. So I am not
clear where does it get the class files from. This is
not only for this but for any import commands like
import java.io.*; All the java.* and javax.* and whatever else it part of the core API is in rt.jar, which lives inside the Java distribution. Classpath elements can be directories or jar files or zip files.

WHERE to find [b]java.util.regex.*[\b] package?

Does anyone know where to obtain a copy of the java.util.regex.* package (separate package)? This is a new package included in version 1.4.0.

Does anyone know where to obtain a copy of the
java.util.regex.* package (separate package)?
This is a new package included in version 1.4.0.Simple:
Go to your java sdk directory
$ jar xvf src.jar
$ cd java/util/regex
$ javac ASCII.java
$ javac Matcher.java
$ javac Pattern.java
$ javac PatternSyntaxException.java
$ cd ../../..
$ jar cvf regex.jar java/util/regex/*.class
et voila; how difficult can that be ? There is no native, JVM depending stuff in there, although I did not check for dependencies on other new stuff inside the jdk.
I'm also unaware if this isn't illegal under the agreement with Sun.

Java.util.vector package

What is in the java.util.vector package and why is it used (imported)?
Thanks

Can you tell me what the Vector class is use for?First of all, forget about Vector. When anyone mentions Vector, your response should be "You're still using Vector? Are you still in 1.1?"
Use ArrayList. It's basically the same but better. It's a List. You know what a List is right? It's a group or ordered items that can contain duplicates. An ArrayList is basically a List that is backed by an array. The greate thing about it is that it automatically makes itself bigger as needed and implements probably the most commonly supported Java type: Collection.

Modifying JAR file using java.util.jar package over the network

Hello,
I am modifying a JAR file programmatically using java.util.jar package. The time taken to save the contents to a local disk is very less (around 1 sec) . When I tried modifying the JAR from a remote machine over the network (from mapped drive or shared folder of WIN NT), the time taken to save is 15-20 times more.
I am recreating the whole JAR while modifying. Is there any way to improve the performance. Or is it possible to write only the changed files?
Thanks,
Prasad Y S.

When you "update" a jar file, you must always recreate it from scratch.

Differences on Windows and Linux JVM about java.util.zip package

Hello, there!
I need some help if someone else has already face this problem.
I have a Java server that process the bytes of a SWF File stored in the server and ouptut it to the user through a Servlet. The file was decompressed and re-compressed using the java.util.zip package (Deflater/Inflater).
Everything works fine on Windows Server 2008 server. But now we need to migrate the server to Linux. The problem is that when I test the website now, the file seens to be corrupted.
What really intrigues me is that everything runs normal on Windows Server configuration, when changed to Linux, the final file seens to be corrupeted... what could possible be the cause? Is there any difference between java.util.zip package on Window and Linux JVM?
My Windows Server is:
. Windows Server 2008 (6.0 - x86)
. Apache 2.2.11
. Tomcat 6.0.16.0
. Java JDK 1.6.0_12-b04
My CentOS Server is
. CentOS 5.4 (2.6.18-164.15.1.el5 - i386)
. Apache 2.2.3
. Tomcat 6.0.16.0
. Java JDK 1.6.0_12-b04
Please, if someone could give me a lead, I would appreciate very much!
Thank you all in advance,
CaioToOn!

ejp wrote:
Thank you for the answer, but no. The path is correct.That's not what he meant. Zip file/directory entries are supposed to use / as the path separator. It is possible to use \ but such Zip files will only work under Windows. You may have erred here.Ohhh, I had really missunderstood what Ray said. But, I still think that this is not the problem, since the ZIP is a single SWF file generated by Flex SDK 3.4 and compressed in the ZLIB open standard (as in page 13, at [http://www.adobe.com/devnet/swf/pdf/swf_file_format_spec_v9.pdf|http://www.adobe.com/devnet/swf/pdf/swf_file_format_spec_v9.pdf] ). This is how Flash Compiler compress the files.
jschell wrote:
If the above suggestions do not solve the problem...Specify in detail with the exact steps used how you determined that it was corrupted.The reason why I believe the SWF is getting corrupted is that when it is loaded by Flash Player (in the client-side) the Player throws a VerifyError: Error # 1033. The [documentation says (see error 1033)|http://help.adobe.com/en_US/AS3LCR/Flash_10.0/runtimeErrors.html] that this error means that the SWF file is corrupted.
As I said, what intrigues me is that this work perfectly in a Windows Server 2008 server. I just had setup a CentOS server and deployed the application. The client-remains unchanged, so why could the result change?
raychen wrote:
I would remove the side effect you are doing and send the file straight through, with decompress and compress, the servlet. It is more likely that you have a bug in your swf processor than the zip library.
I had already tried it when first coding, in Windows Server 2008, it had not worked.
Thank you all for the help.
CaioToOn!

Unable to capture messages from java.util.logging

I have a class called (Caller.java) which invokes a method called foo from another java class(Util.java) using reflection API.Now this method foo logs messages using Java's logger.My requirement is to call foo for 3 times from Caller and capture/redirect the log messages into 3 log files.
But only the first log file is capturing the log messages(from logger) and other two are not ?
Plz suggest if I am doing somethin wrong here ?
Caller.java
package project2;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintStream;
import java.lang.reflect.Method;
public class Caller {
    public Caller() {
    public static void main(String[] args) throws Exception {
        Caller caller = new Caller();
        for (int i = 0 ;i<3 ;i++ ) {
            caller.createLogStream(i);
            System.setOut(caller.getPs());
            System.setErr(caller.getPs());
            /*****************Invoking Util.java*****************************/
            Class clas = Class.forName("project2.Util");
            Method m = clas.getMethod("foo",null);
            Object obj =clas.newInstance();
            m.invoke(obj,null);
    public void createLogStream(int i) throws FileNotFoundException {
        ps = new PrintStream(new File(System.getenv("HOME")+File.separator+"MyLog"+i+".log"));
    public void closeLogStream(){
        ps.close();
        ps = null;
    private PrintStream ps = null;
    public PrintStream getPs() {
        return ps;
} Util.java
package project2;
import java.util.logging.Logger;
public class Util {
    Logger logger = null;
    public Util() {
        logger = Logger.getLogger(this.getClass().getName());
    public void foo(){
        System.out.println("Hello out stream");
        System.err.println("Hello error stream");
        logger.info("This is an information");
        logger.warning("This is a warning message");
        logger.severe("This is fatal!! ");
}First Log file MyLog0.log:
Hello out stream
Hello error stream
Feb 16, 2009 7:55:55 PM project2.Util foo
INFO: This is an information
Feb 16, 2009 7:55:55 PM project2.Util foo
WARNING: This is a warning message
Feb 16, 2009 7:55:55 PM project2.Util foo
SEVERE: This is fatal!!
Feb 16, 2009 7:55:55 PM project2.Util foo
INFO: This is an information
Feb 16, 2009 7:55:55 PM project2.Util foo
WARNING: This is a warning message
Feb 16, 2009 7:55:55 PM project2.Util foo
SEVERE: This is fatal!!
Feb 16, 2009 7:55:55 PM project2.Util foo
INFO: This is an information
Feb 16, 2009 7:55:55 PM project2.Util foo
WARNING: This is a warning message
Feb 16, 2009 7:55:55 PM project2.Util foo
SEVERE: This is fatal!! Other 2 log files have only this much
Hello out stream
Hello error stream

A stale Connection Factory or Connection Handle may be used in SOA 11g
Regards,
Anuj

Using List Class in java.awt / java.util ?

have a program that:
import java.util.*;
List list = new LinkedList();
list = new ArrayList();
... read a file and add elements to array
use a static setter
StaticGettersSetters.setArray(list);
next program:
import java.awt.*;
public static java.util.List queryArray =
StaticGettersSetters.getArray();
If I don't define queryArray with the package and class, the compiler
gives an error that the List class in java.awt is invalid for queryArray.
If I import the util package, import java.util.*; , the compiler
gives an error that the list class is ambiguous.
Question:
If you using a class that exists in multiple packages, is the above declaration of queryArray the only way to declare it ?
Just curious...
Thanks for your help,
YAM-SSM

So what you have to do is explicitly tell the compiler which one you really want by spelling out the fully-resolved class name:
import java.awt.*;
import java.sql.*;
import java.util.*;
public class ClashTest
    public static void main(String [] args)
        java.util.Date today    = new java.util.Date();
        java.util.List argsList = Arrays.asList(args);
        System.out.println(today);
        System.out.println(argsList);
}No problems here. - MOD

Java util package & UndirectedGraph

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