Programming :: Replacing The File In .Jar - Java.lang.NoClassDefFoundError Exception At Main Class

Jul 21, 2010

working on a script to update .Jar file, I have tried jar xf to unpack and jar cf to repack it is giving me java.lang.NoClassDefFoundError exception at main class. I also tried jar uf, which is also not working for me Basically my jar file requires to update date, which i do from "winrar" Manual it works fine, but now to remove "Donkey work", i want to make an script which does this all automatically, and the last stage is to update jar file which is not happening.

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Debian Programming :: Java Can't Find Main Class

May 18, 2010

This is a bit of revision for the OU course M257

Code: Select all import java.util.*;
public class FindDupes {
public static void main(String[] args) {
   Set<String> orig = new HashSet<String>();
   Set<String> dupe = new HashSet<String>();
   for(String a: args)
   if(!orig.add(a))
      dupe.add(a);

   orig.removeAll(dupe);
   System.out.println("words " + orig);
   System.out.println("dudes " + dupe);
}
}

for some reason it will compile but not run on debian lenny complains it can't find the main class but it compiles and runs without problem on Fedora 12.

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Programming :: Getting Undefined Reference To Main In Sub-class For BST?

Apr 27, 2011

I'm writing a binary search tree class to insert records and I'm stuck on the following error:

Code:
/usr/lib/gcc/x86_64-redhat-linux/4.1.2/../../../../lib64/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
collect2: ld returned 1 exit status
Here is the code for my class:

[Code]...

I really don't know how to approach this, I thought that everything was working fine but I have no idea what is wrong. Also, for clarification, main() is in a different .cpp file that #includes "tree.h"

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May 10, 2011

I've had to do some code in java, a language I'm very much unfamiliarly with so please excuse my incorrect use of terms. The basic outline of my problem is I create a class object as a local within a swing button function it works fine. If I create it as a global ( with I think I need to do ) within main, then prototype it with the other swing objects at the bottom of the file when it is called it causes a host of problems. I think the easiest way is to show it.

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Sep 18, 2010

I am looking to write a function to return an MD5 hash in Java but I don't want to us the MessageDigest class as I am using the J2ME framework which doesn't include it.

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Ubuntu :: Cannot Execute Java Class File In 9.10

Mar 20, 2010

I installed jdk1.6.0_18 version. Please see below for the version.

[Code].....

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Feb 23, 2011

i try to open a java app, the launch proceeds as far as the final stages, but then stops to do the final sequences showing the error msg listed above.

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Programming :: NumberFormatException And NoClassDefFoundError?

Jul 19, 2011

I'm a noob linux user who thought it'd be pretty sweet to take an intro to programming prerequisite course for a master's program on a linux based system. Made sense at the time, use on operating system based on the premise that you'll be using the command line frequently to take a course where you'll be running your programs from the command line. Around the end of week two, and I started having some serious issues w/ my programs. Basically, any program that has to do any type of calculation (rather than just print string values I set initially for their respective variables), I get two intermittant errors.

Exception in thread "main" java.lang.NumberFormatException: invalid character at position 1 in uninitializedValue
at java.lang.Integer.parseInt(libgcj.so.10)
at java.lang.Integer.parseInt(libgcj.so.10)
at CollegeAdmission.main(CollegeAdmission.java:21)
icetherapy@Frodo:~/Documents/intro_prog/smith_Ch3$

The error is so intermittant I can't actually tell you what criteria to provide to get it. Numbers under 50 seem to trigger it more often though. I'll post the actual java code for that particular file in a second post. There is a second error I haven't been able to reproduce as a standard user tonight, but I got it to come up logged in as root:

Exception in thread "main" java.lang.NoClassDefFoundError: CollegeAdmission.
at gnu.java.lang.MainThread.run(libgcj.so.10)
Caused by: java.lang.ClassNotFoundException: CollegeAdmission. not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:./,file:/home/icetherapy/Documents/intro_prog/smith_Ch3/],

CODE....

Things I've tried to do to fix it:

Entered the following into my .bashrc profile in an attempt to set the classpath. I spotted the JAVA_HOME bit in a thread and thought it worth a shot since I've been at this on and off for over two weeks with no success

# 5th attempt at adding CLASS_PATH to .bashrc profile
export CLASSPATH=$CLASSPATH:~/Documents/intro_prog/smith_Ch3
JAVA_HOME=~/etc/java-6-sun export JAVA_HOME

Things I think I may have screwed up:

This is on Debian Squeeze, I went with a simple non-partitioned graphical install, and installed the JDK using they synaptic package manager. Normally, it looks like people have Java installed in their /bin directory, but mine ended up in /etc after the automated install

pwd returns: /etc/java

The class definition error makes me think that it's something to do with my CLASSPATH variable, but even when I set it in .bashrc to the directory the .class files are housed in, that error still returns. I feel like the integer parse error has something to do with not having installed everything, but I'm really just making that up, as I have no definitive proof.

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Software :: Firefox Java.lang.SecurityException Error?

Jan 14, 2010

I use Fedora 10.When I use Firefox , the following message appear with the dialog box.java.lang.SecurityException:Changing the SecurityManager is not allowed.:I click OK button.How can I do for it.

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General :: SuSe 11.3 - Could Not Find Main Class (OData)

Apr 20, 2011

I have installed suse linux 11.3. I have jdk 1.6.20.0 and oracle 10g 10.2.0. When I tried to connect to a database through thin driver ,it is giving me the following error.

Exception in thread "main" java.lang.NoClassDefFoundError: odata
Caused by: java.lang.ClassNotFoundException: odata
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)

Could not find the main class: odata. Program will exit.

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Programming :: Replacing Lines With Pattern Partialy By Different File?

Apr 12, 2010

I have two files, where the 1. file has special lines that need to be updated by lines from a 2. file:file1:

foo
foo
foo 0.00 0.00 0.00 pattern

[code]....

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Programming :: Using Grep And Regular Expression To Find Class References In C++ File?

May 28, 2010

I'm trying to math all class references in a C++ file using grep with regular expression. I'm trying to know if a specific include is usuless or not, so I have to know if there is a refence in cpp. I wrote this RE that searches for a reference from class ABCZ, but unfortunately it isn't working as I espected:

grep -E '^[^(/*)(//)].*[^a-zA-Z]ABCZ[]*[*(<:;,{& ]'
^[^(/*)(//)] don't math comments in the begging of the line ( // or /* )
.* followed by any character

[code]....

Well, I can get patterns like this:

class Test: public ABCZ{
class Test: public ABCZ {
class Test : public ABCZ<T>

[code]....

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Fedora :: Java Engine For Browser - Add Exception ?

May 24, 2010

I want a internet browser to open a site that needs java engine,firefox has not this and also galeon :

The certificate is not trusted because it is self-signed.

(Error code: sec_error_ca_cert_invalid)

* This could be a problem with the server's configuration, or it could be someone trying to impersonate the server.

* If you have connected to this server successfully in the past, the error may be temporary, and you can try again later.

Or you can add an exception

You should not add an exception if you are using an internet connection that you do not trust completely or if you are not used to seeing a warning for this server.

If you still wish to add an exception for this site, you can do so in your advanced encryption settings.

How i can add exception or it is better to say me that :is there any browser instead of internet explorer for linux??

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Nov 9, 2010

I have a text file that needs to be updated to be used by some fortran code later. it looks like that:

1,1 !Ms for y-stations, Ns for x-stations
0,0,0, !xsta, ysta, zsta

I need to replace the "0,0,0" with new values for xsta,ysta and zsta;

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Programming :: Bash File Comparing - Report How Many Matching Words My Main File ?

Jun 9, 2009

I have been messing with diff and grep for 2 days now without result

I am trying to match a file consisting of words to many separate other wordfiles in a specific directory. one by one.

What i want the script to do is to report how many matching words my main file has with every file in the directory, each in turn

setup:

Each of em are plain text files with 1 word per line

Output should be something like:

SCRIPT REPORT:

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Programming :: Regarding The 16 Bit Enumeration In C Lang?

Mar 22, 2011

enum argu {
send = 0x0001
, receive = 0x0002
};

what is the meaning of the 0x0001 and 2.

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Programming :: Implementing Hamming Code In C Lang?

Sep 12, 2010

implementing hamming code in c: Calculating the Hamming Code The key to the Hamming Code is the use of extra parity bits to allow the identification of a single error. Create the code word as follows:

Mark all bit positions that are powers of two as parity bits. (positions 1, 2, 4, 8, 16, 32, 64, etc.)
All other bit positions are for the data to be encoded. (positions 3, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 17, etc.)

[code]....

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Feb 4, 2011

I have a simple code like below. when I run this command javac callSMSClient.java I get this erros. Any solution to this please?

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Software :: Set Class Path For Java In Ubuntu 9.10

May 24, 2010

I recently installed java in ubuntu (ver#java1.6.0.00)with many pains.Now I need a clear class path for this java in ubuntu 9.10.

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Debian :: Java Error - Class Applet GUI Not Found

Mar 7, 2010

I have Debian Testing, Kernel 2.6.32-trunk-686 and Java version:
java version "1.6.0_16"
Java(TM) SE Runtime Environment (build 1.6.0_16-b01)
Java HotSpot(TM) Server VM (build 14.2-b01, mixed mode)

If I open web page with Java application (in Opera, Iceweasel and Google Chrome), for example this page: [URL] I get error message (image in attachment). If I click in the Details, I get this text:
Java Plug-in 1.6.0_16
Using JRE version 1.6.0_16-b01 Java HotSpot(TM) Server VM
User home directory = /home/johnnycage
c:clear console window
f:finalize objects on finalization queue
g:garbage collect
h:display this help message
l:dump classloader list
m:print memory usage
o:trigger logging
q:hide console
r:reload policy configuration
s:dump system and deployment properties
t:dump thread list
v:dump thread stack
x: clear classloader cache
0-5: set trace level to <n>

load: class AppletGui not found.
java.lang.ClassNotFoundException: AppletGui .....
Exception: java.lang.ClassNotFoundException: AppletGui

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General :: Convert Java Class Into Jar Archive In (Redhat)?

Jun 7, 2011

I need to know that how to convert a java class file into java archive (jar)

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Programming :: Making Dynamic Memory As 64kB Aligned In C Lang?

Aug 17, 2010

I doing malloc and getting the chunk of dynamic memory. Now I want it to align that memory to 64KB. This means that the address of the memory starts from 64KB or multiple of 64KB.

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Ubuntu Security :: Malware-gen In Class Files With Latest Java?

Apr 4, 2011

I browse with Firefox and I had been running a pretty vanilla install of Ubuntu 10.4 (with a few things like tomcat and mysql) I supposed the repos kept everything (like java) up to date.

Some time ago I replaced OpenJDK with SunJDK.
java -version is "1.6.0_24"
which java is /usr/bin/java

Yesterday, for the first time, I downloaded and ran an Avast! scan. It complains of "Malware-gen" in several class files in what I think is the java cache. Does anyone know how this could be?

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General :: Removing All Traces Of GNU Java And Openjdk And Replacing With Sun JDK

Mar 20, 2011

I have installed latest Sun JDk. But when I do: java -version I still got OpenJDK version. So I completely removed OpenJDK. But now when I do:

java -version I get even older GNU java 1.5 something libgcj. So I completely removed that too but it was asking to remove bunch of dependent apps like OpenOffice.org Writer etc. Even though I need the writer, I let it go because I do not want ever to see the face of any GNU java on my linux. So everything related to GNU java is removed. Luckily I am able to start Eclipse and it works fine and start normally (apparently using the installed Sun JDK which is what I want). But now when I run

java -version I get bash: /usr/bin/java: No such file or directory Now what I need to do so that when I open any terminal window and enter java -version I should get Sun JDK version? Sun JDK is installed in /usr/java/jdk1.6.021. I also have symlinks: /usr/java/latest and /usr/java/defaults pointing to sun jdk.

As suggested in the answer, I tried the alternatives command but it did nothing. I type the --display, nothing is shown, and --config does nothing.

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Software :: Set Mail.jar - JavaMail - And Mysql-connector-java.jar In Class Path

Jan 18, 2010

I want to ask how i set Linux class path for mail.jar and mysql-connector.jar. I have set the class path for java with the command.

Code:

when i do java -version it's work fine.

Also if i want to know that what shell i am using how can i find it.Also what is the command for showing class path variables or how can i see my JAVA_HOME class path.Means after setting the class path for above two files how can i see that these files have added.

When i write echo $CLASSPATH or echo $JAVA_HOME it shows nothing no error but again shows the prompt.

One thing more i want to run a java program on Linux it is in a package (named asteriskproject). It consist of 10 java files. I have run this program on windows using netbeans IDE.For this program i need to set my Linux class path for the above mentioned files, and this is my first time that i am running any program on Linux. So i want to ask how can i run my program. Simply put this asteriskproject directory in any folder and run the main file using javac. Is it right way to run the program that consist of package ?

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Jun 5, 2010

ireverter will not launch due to a java problem: "Could not find the main class: org.thestaticvoid.iriverter.ConverterUI"

In the past a solution was to add: "export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib/jni" before the java line in the script. This does not correct my problem.

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May 21, 2010

this is an error in java not knowing its classpath. IANAP, and could use some help in resolving this.I've followed the instructions available at various sites, and the installation went fine.When I start the service I get the following in the wrapper.log:

Code:
root@twin:/etc# service adito console
Running Adito...

[code]....

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May 11, 2011

I'm fighting my way through JAVA. But have hit another wall. Basically I need to to set paths in java so it can set/read files/director for Linux,Mac and windows.

The tutorials I'm using says to do this through the FileSystems class eg

Code:

However this reports it is missing, so a look on line says I need the headers so I set them with

Code:

This gives the following error

This has me totally confused as the tutorial shows this and checking online shows this, do I need to link in libraries or something like that?

I'm using the latest Ubuntu 11.04 and netbeans.

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Apr 15, 2009

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Jan 4, 2010

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