Using JAR file in running application and POI !

Hi all
I am trying to use POI HSSF f(for the first time, So pls bear with me!)or creating excel file from my java Application. I am using the jar file :
poi-2.0-RC2-20040102.jar. Not sure if its the correct one. So If I am wrong pls correct me.
Now I am creating a bat file to compile my application:
@echo off
C:\jdk1.3.1_04\bin\javac -classpath C:\POI\poi-2.0-RC2-20040102.jar MyApp.java
pauseIt compiles fine. Now If I try to use the jar file in run.bat for running my application, it says NoClassDef FoundError:MyApp. Here is my run.bat
java -classpath C:\POI\poi-2.0-RC2-20040102.jar MyApp
pauseI am not able to run my application with this run.bat file . If I change the content to:
"java MyApp.java"
It runs but give me error: NOClassDefFoundError:import org.apache.poi.hssf.usermodel.HSSFWorkbook
Pls suggest me about how to use jar file in running my app and how to rresolve workbook finding problem.
Reagrds

Try this:
java -classpath .;C:\POI\poi-2.0-RC2-20040102.jar MyApp
pauseNote the "dot semi-colon" at the start of the CLASSPATH. That puts the current directory in the CLASSPATH, which is where MyApp.class lives. (No package, right?)
See if that works better.

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Accessing files from jar file when running application?

I have an application that when run should read an xml file (test.xml) from a jar file located in a resource folder. I do this:
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//      f = new File(url.toURI());
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fedevaps wrote:
But is there now otherway to create a File from the URL?Only if the URL refers to a file in the first place. Which it doesn't when the URL refers to an entry in a ZIP file because an entry in a ZIP file is not a file.
java.io.File refers to physical files in the sense that the operating system uses it. It can't refer to Files on remote machines, it can't refer to "files" stored in .ZIP files and it can't refer to some random String that you construct.
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Problem in run the Java ME application using jar file

Hi all,
I am using Eclipse 3.3 with CLDC and MIDP, I add external jar file for my application. The jar contains MIDlet and some classes. I create a class (not MIDlet) that have same package name and Class as in jar file.
Say for example the jar file have com.Displaytext and My new project have com.Displaytext.
The problem is my application takes the class file in external jar but my intent is the application class file needs to work.
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Edited by: chals on Aug 23, 2008 12:24 PM
Edited by: chals on Aug 23, 2008 12:25 PM
Edited by: chals on Aug 23, 2008 12:37 PM

For class loading inside or outside of JAR files I use this code:
void loadClass (String className) {
    String prefix = "de.test.";
    String postfix = ""; // use this if your classes have a name pattern
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void loadClass (String className, Class[] paramClasses, Object[] params) {
    String prefix = "de.test.";
    String postfix = ""; // use this if your classes have a name pattern
    Object o = Class.forName(prefix + className + postfix).getConstructor(paramsClasses).newInstance(params);
}

Using a jar file in my application... how?

I have a JAR file which contains some classes I need to use in my application. I however, after looking in several books, cannot figure out how to use this JAR file within my application.
Do I simply put it in the directory with my .java files, and use an import command? I'm confused.

If the classes in the jar are part of a package then you can import them based on the package structure. The jar file will have to be part of your CLASSPATH variable.
i.e.
myUtils.jar
resides in C:\"My Classes"
CLASSPATH = .;"C:\My Classes";"C:\My Classes\myUtils.jar"
within the jar I have the following class:
\ameyer\Util\someUtil.class
\ameyer\Util\anotherUtil.class
To use these classes I could use the following import statement
import ameyer.Util.*;
This would import any class at that level in the jar.
Note: the import part of the CLASSPATH is "C:\My Classes\myUtils.jar"
hope this helps.

Please I can not get a .jar file to run on XP SP3 start/run/cmd/

I can not get a .jar file to run on XP SP3 start/run/cmd/
Please help if can figure this out. I'm convinced it is a Windows XP SP3 problem from searching on google and seeing other ppl on XP SP3 with same problem (but no working solution for myself). I'll try to be complete-listing all I've done.
I had installed: Java SE Runtime Environment v6u14 for Windows Multi-language
I had checked here it was working properly: http://www.java.com/en/download/manual.jsp
I'm trying to run this jar file (soht-client-0.6.2.jar):
http://prdownloads.sourceforge.net/telnetoverhttp/soht-java-client-0.6.2.zip?download
http://www.ericdaugherty.com/dev/soht/javaclient.html < this is the information for the program.
(yes the file can be executed and should open the program's window
I wanted to post screenshot of it but friend that it's working for isn't here)
_(Please find log of all cmds I did in this post here: http://pastebin.com/f792983df )_
_I have extracted +'all' the files to: C:\062\+_ (I have tried using other directories, same problem)
++I then start/open/run/cmd+
then I: cd C:\062\+
then I try various commands - all+ of these do absolutely nothing- meaning no errors, no reply, no window opens, nothing except enters that directoy again:
java -jar soht-client-0.6.2.jar
java -jar -client soht-client-0.6.2.jar
java -client -jar soht-client-0.6.2.jar
java -jar soht-client-0.6.2.jar soht.properties
soht-client-0.6.2.jar
So I try this cmd: java soht-client-0.6.2.jar
Reply:
C:\062>java soht-client-0.6.2.jar
Exception in thread "main" java.lang.NoClassDefFoundError: soht-client-0/6/2/jar
Caused by: java.lang.ClassNotFoundException: soht-client-0.6.2.jar
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Could not find the main class: soht-client-0.6.2.jar. Program will exit.
I try this cmd:
java -jar soht-client-0.6.2.jar -client
Reply:
C:\062>java -jar soht-client-0.6.2.jar -client
Unable to load configuration file: -client - java.io.FileNotFoundException: -cli
ent (The system cannot find the file specified)
SOHT Java Client
The SOHT Java Client requires a properties file. Either start
the application in the same directory as the soht.properties
file, or specify the file name on the command line:
java -jar soht-cleint-<version>.jar c:\soht.properties
So then I do these cmds which produce the exact same error/reply just above; Unable to load..:
j_ava -jar soht-client-0.6.2.jar -client soht.properties_
java -jar soht-client-0.6.2.jar -client C:\062\soht.properties
So then I copy soht.properties to C root and do:
java -jar soht-client-0.6.2.jar -client C:\soht.properties <same error as above
Then from other information I have read I right click on the .jar file, select open with Always open with:
_"C:\Program Files\Java\jre6\bin\javaw.exe"_
Try again.. same problem.
Then I do cmd:
_"C:\Program Files\Java\jre6\bin\javaw.exe" -jar "C:\062\soht-client-0.6.2.jar"_
does nothing, retry the other commands same thing (either nothing or those same replies)
Then I read (http://forums.sun.com/thread.jspa?threadID=5384879) someone had the same problem as I and they solved it by uninstalling all Java/reboot/ then install JDK 6 Update 14 with NetBeans 6.5.1 start NetBeans and then it worked for them.
So I unistalled all Java, rebooted and gave the cmd another try (before re-installing), now a new error, of course:
C:\062>java -jar soht-client-0.6.2.jar
'java' is not recognized as an internal or external command, operable program or batch file.
Then I install Java SE and NetBeans Cobundle (JDK 6u14 and NB 6.5.1) Final Release/ reboot/ open Netbeans/
go to test java page; all is good, run cmds again -and still nothing..
C:\062>java -version
java version "1.6.0_14"
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) Client VM (build 14.0-b16, mixed mode, sharing)
I reassociate program with: C:\Program Files\Java\jre1.6.007\bin\javaw.exe_
same thing.. nothing
Thank you very much for your time :D_
PS. My computer has been newly reformatted so needing another reformat I'm sure is not the solution.

Thank you very much for your replies Taggert_77 & swmtgoet_x :D
Taggert77_: I have never used NetBeans. I only installed it in the bundle as I had read on another post that somehow installing the bundle magically helped another user with the same problem (he didn't know why it worked after that either).
Before XP SP3 I was able to execute .jar file through cmd prompt. Now I am not.
This file is executable, grab it and you will see. Here is a screen shot (program in front is FlashFXP, behind is the cmd prompt and what should happen):http://www.freeimagehosting.net/uploads/53273b4ddf.jpg
swmtgoetx_: I only did the other cmd's to try to make it spit out something, anything lol :D
The proper cmd is simply: java -jar soht-client-0.6.2.jar
I did give your cmd a try, and it produced nothing :( (just like the other correct cmds)
java -client -jar soht-client-0.6.2.jar soht.properties
Thank you again...the mystery remains
PS. If you do a search for this you'll find an amazing amount of XP SP3 users with the same problem and no solution posted that I could find except one chap that did the unistall install order that I did above).

Using .jar files

I was able to use .jar files in Java programs that I write on my computer. I could write a program that used an import statement to bring in classes contained in a .jar file.
One day, I was trying to incorporate a jar file folder directly into my windows operating system by using the environmental variable called CLASSPATH. Unfortunately, I made the mistake of screwing up my PATH variable. I fixed my PATH variable back up by adding the directory to the bin folder inside of the Java folder as is described commonly by the documentation for installing the Java SE on windows computer.
Since that day, I have not been able to use .jar files using an import statement. My computer is unable to find the .jar files even if I specify the exact directory. Even the IDE(netbeans) that I use is unable to find and use .jar files. I have found that I can open up .jar files and pull the contents that I need out of said .jar files, but I have a project that does not allow me to open up the .jar files and extract the needed classes.
I have googled this problem so much that I have read hundreds of posts about .jar files, and I cant find anyone in a situation that is similar to mine. If I take my files to another computer with Java SE installed, then my source code can access the .jar files just fine. For some reason, my work computer seems to hate using .jar files. I have no idea what could be the problem. There is no information in the java documentation on troubleshooting with this problem, and the most confusing part is that it worked perfectly fine until That one day
Does anyone have any ideas?
Specific technical details:
I need to pull the Stopwatch.class file from a stdlib.jar file. In the past I had done this by using an import statement inside of my program:
"import stdlib.Stopwatch; "
Using this command to compile:
"javac -cp .;(directory path to .jar file); source.java"
This used to work. Now when using the javac command I get error messages
1. Error points directly to import statement. Arrow directed at the period after stdlib.
"cannot find symbol"
2. Error message pointing to all instances of the class that I was attempting to import into my program.
Thanks for reading
Edited by: 955611 on Aug 28, 2012 7:22 PM

I read your post. I want to compile this project by using the "-classpath" option in the javac command. After screwing up important system variables once, I do not want to continually have to play with system variable in order to compile projects. To quote from the website that you linked:
Using the JDK tools' -classpath option
The JDK tools java, jdb, javac, and javah have a -classpath option which replaces the path or paths specified by the CLASSPATH environment variable while the tool runs. This is the recommended option for changing class path settings, because each application can have the class path it needs without interfering with any other application.
The runtime tool java has a -cp option, as well. This option is an abbreviation for -classpath.
For very special cases, both java and javac have options that let you change the path they use to find their own class libraries. The vast majority of users will never to need to use those options, however.
Clearly, the "-classpath" option in the javac is intended to replace the need to play with important system variables. I guess my post boils down to the question of "Why doesn't this command work for me?". I followed your suggestion by removing the bin directories and adding the stdlib.jar directory directly into the system variable itself. Here is the following output from my command prompt:
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\Lelo>E:
E:\>cd Programs\Java
E:\Programs\Java>javac testy.java
testy.java:1: error: package stdlib does not exist
import stdlib.Stopwatch;
^
1 error
E:\Programs\Java>echo %CLASSPATH%
C:\Program Files\Java\jre6\lib\ext\QTJava.zip;E:\Programs\Java\stdlib.jar;
E:\Programs\Java>javac -classpath .;E:\Programs\Java\stdlib.jar; testy.java
testy.java:1: error: package stdlib does not exist
import stdlib.Stopwatch;
^
1 error
E:\Programs\Java>
I still received the same errors. It seems that even adding the directories into the system variable will not work for me.

Access JAR File while running App with Java Web Start

Hello guys,
I want to delpoy my application so that I can run it when I click on the appropriate button in a web page.
I have a Jar file for all the files that the app needs. No, not all of the files are included.
Indeed, I use JAR files such jdom.jar or postgres...jar that I must use in within my application.
How can I access these JAR files knowing that I can't point to files in a JAR file A from within a JAR file B, if the JAR file B contains the JAR file A?
The main JAR file that I put on the web server can be seen as the JAR file B and the other JAR files must be stored somewhere for the java classes within the main JAR file to have access to them.
I wonder whether there is another way to structure the project.
Thanks.

Hi Andrew.
I have followed your suggestions and here is what my .jnlp file look like:
<tt>
<?xml version="1.0" encoding="utf-8"?>
<jnlp spec="1.0+" codebase="http://localhost:8080/koedops" href="beta.jnlp">
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</jnlp>
</tt>
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When I launch the application though nothing happens upon the download. In contrast, if I change the main class to a class file that requires no extra library, it runs perfectly.
I can't be sure whether the jar-files are successfully accessed.
Regards.
Edmond

Performance issue if we use jar file instead of classes

Hi,
My application uses tomcat as web server.
If i use calsses in webapps -> WEB-INF -> classes folder, i place classes in that ,
In other case i use jar file and place that file in WEB-INF -> lib folder in the webapps directory.
There is huge performance difference.
While using classes performance is great while using jar file performance is very disappointed.
I am using a file for encryption /decryption also.

I can't really believe that classes vs jars makes a difference, but whatever.

Use jar file

dear guys,
can somebody tell me why would use jar file? how it would be use? i would like to get the idea of jar file
thanks

Are you familiar with zip files? A jar file is just a kind of zip (the jar utility will even read zip files as though they were jars).
The most common use is to hold .class files generated from all the classes of a Java program so that you can run the program from that one file, rather than very large numbers of small class files. Libraries of classes are almost always stored as jars.
Of course you can put other stuff in there too, like image files and the like.

I am trying to use java file as Model layer and jsf as presentation layer

I am trying to use java file as Model layer and jsf as presentation layer and need some help
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I create java file
package oracle.model;
import java.sql.;*
import java.util.;*
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Connection con ;
Statement ps;
ResultSet rs;
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*public List getperInfoAll() {*
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*public class perInfo {*
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String firstName;
String lastName;
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this.uname = uname;
this.firstName = firstName;
this.lastName = lastName;
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return uname;
*public String getFirstName() {*
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*public String getLastName() {*
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right click on the file and choose 'create data control'
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*<h:dataTable id="dt1" value="#{bindings.perInfoAll}"*
var="item" bgcolor="#F1F1F1" border="10"
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*<h:outputText value="First Name" id="ot1"/>*
*</f:facet>*
*<h:outputText style="" value="#{item.firstName}"*
id="ot2"/>
*</h:column>*
*<h:column id="c4">*
*<f:facet name="header">*
*<h:outputText value="Last Name" id="ot9"/>*
*</f:facet>*
*<h:outputText value="#{item.lastName}" id="ot8"/>*
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*<h:column id="c3">*
*<f:facet name="header">*
*<h:outputText value="Username" id="ot7"/>*
*</f:facet>*
*<h:outputText value="#{item.uname}" id="ot4"/>*
*</h:column>*
*<f:facet name="footer">*
*<h:outputText value="The End" id="ot3"/>*
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*</center>*
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I know that there is something wrong in calling the binding object
I need help pls and where can i find some help to deal with another tag types
thanks

i dragged the "perInfoAll" from my "Data Controls" and choosed adf table (even I know that new table with adf tags well be generated and i want table with jsf tags)
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*<%@ page contentType="text/html;charset=UTF-8"%>*
*<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>*
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*columns="#{bindings.perInfoAll1.hints.uname.displayWidth}"*
*maximumLength="#{bindings.perInfoAll1.hints.uname.precision}"*
*shortDesc="#{bindings.perInfoAll1.hints.uname.tooltip}"*
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*<f:validator binding="#{row.bindings.uname.validator}"/>*
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*</af:column>*
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*headerText="#{bindings.perInfoAll1.hints.firstName.label}"*
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*<af:inputText value="#{row.bindings.firstName.inputValue}"*
*label="#{bindings.perInfoAll1.hints.firstName.label}"*
*required="#{bindings.perInfoAll1.hints.firstName.mandatory}"*
*columns="#{bindings.perInfoAll1.hints.firstName.displayWidth}"*
*maximumLength="#{bindings.perInfoAll1.hints.firstName.precision}"*
*shortDesc="#{bindings.perInfoAll1.hints.firstName.tooltip}"*
*id="it2">*
*<f:validator binding="#{row.bindings.firstName.validator}"/>*
*</af:inputText>*
*</af:column>*
*<af:column sortProperty="lastName" sortable="false"*
*headerText="#{bindings.perInfoAll1.hints.lastName.label}"*
*id="c3">*
*<af:inputText value="#{row.bindings.lastName.inputValue}"*
*label="#{bindings.perInfoAll1.hints.lastName.label}"*
*required="#{bindings.perInfoAll1.hints.lastName.mandatory}"*
*columns="#{bindings.perInfoAll1.hints.lastName.displayWidth}"*
*maximumLength="#{bindings.perInfoAll1.hints.lastName.precision}"*
*shortDesc="#{bindings.perInfoAll1.hints.lastName.tooltip}"*
*id="it1">*
*<f:validator binding="#{row.bindings.lastName.validator}"/>*
*</af:inputText>*
*</af:column>*
*</af:table>*
*</af:form>*
*</af:document>*
*</f:view>*
but when run it i see the following errors
*Class oracle.adf.model.adapter.bean.BeanDataControl can not access a member of class nl.amis.hrm.EmpManager with modifiers "private"*
*Object EmpManager of type DataControl is not found.*
*java.lang.NullPointerException*
*Class oracle.adf.model.adapter.bean.BeanDataControl can not access a member of class nl.amis.hrm.EmpManager with modifiers "private"*
*Object EmpManager of type DataControl is not found.*
*java.lang.NullPointerException*
:(

Error while using .jar file instead of class file.

Hello friends,
I created a java class which are referred and called from other jsp\xml and java files. I compiled this java class and everything is working properly. However, I do not want to use class files but want to use jar files instead. So, I created a jar file of this class file by using the command "jar -cvf jarfilename.jar".I kept the jar file in its respective folder .Also, I removed the class file from its path, just to see that the jar file will work automatically.
Unfortunately, I am getting an error:
java.lang.RuntimeException: Component.createComponent(...) Component class not found: <java class path>. I also tried giving the path of this jar file in the classpath. This also does not seem working.
How to solve this problem?
Thanks,
Ranjith M.V
Edited by: RanjithM.V on May 11, 2008 10:34 PM

You probably populated the jar file incorrectly.
A common mistake is to include the path that you had on the classpath, in the jar file.
So a person will have a classpath like this: /foo/
And a class in a package bar, like this:
package bar;So that other classes would include the file like this:
import bar.TheClass;And the class file is on the filesystem like this:
.../foo/bar/TheClass.classThen they'll create the jar file including the foo directory, so if they list the jar's contents, they'll see the above (/foo/bar/TheClass.class). But this is wrong. It should start off so that the jar entries start with the top-level package names (like /bar/TheClass.class).
Maybe you've done that.

I used to have the iPhoto application and for some reason it is now gone. Do I have to pay 14.99 in order for me to be able to have it again or is there a way I can get it back. I have a MacBook pro 10.9.5 .

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Depends on what you had
If you had iPhoto version 9.5.1 then you can reinstall from the app store under purchases
If you had any version of iPhoto '11 then you can install for free from the App store
If you had any earlier version of iPhoto (iPhoto '09 version 8.x.x) or older then you need to purchase iPhoto '11 version 9.x.x from the app store
If you had iPhoto '08 (version 7.x.x) or older then you also need to download and run the iPhoto library upgraded prior to launching the new iPhoto
LN

How to use jar files without setting classpath

Hi,
I have a situvation, I can not set classpath, but i have to use jar files, how can I do that.

URL[] urls = new URL[]{pathToJar, pathToAnotherJar, ...};
URLClassLoader urlc = new URLClassLoader(urls);
Now load classes within the jars loaded by the urlc classloader as needed. This is a limited approach, you can mostly use interfaces to work with classes loaded by the custom loader instance above and your existing classes.

How to reuse a jar file in another application

i have created a jar file.Now i want to reuse this jar file in another java program.Could anyone please guide me with the steps of how to reuse a jar file

i have created a jar file.Now i want to reuse this
jar file in another java program.Could anyone please
guide me with the steps of how to reuse a jar fileput your jar file in class path and import the class which u want to reuse in your code so that u can access all the methods in that class in ur code.

Error message Indesign:Either the file does not exist, you do not have read access to it, or use the file in another application.

I've got problem with opening a file in InDesign. The file type is an InDesign Markup Document. The error message is: Either the file does not exist, you do not have read access to it, or use the file in another application. What's wrong?

Using JAR file in running application and POI !

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