How to call a .jar file in JSP

Hi Folks,
I would like to know how to call a .jar file in a JSP page..
Thanks in adv.

Any web app creating tutorial can. You know, if this doesn't ring a bell with you at all, I don't really feel inclined to explain it to you because I think you shouldn't yet be dealing with JEE in the first place.
http://java.sun.com/j2ee/tutorial/1_3-fcs/doc/WebComponents3.html

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duminda

I created a bean area and set the class name as implementation class. within that java bean class I called to a bat file which consists of the execution command of the jar file ( because i don't know how to call .jar file from my bean class directly).
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How to call a .jar file from a java bean?

any body knows how to call a .jar file from a java bean?

Crosspost!
http://forum.java.sun.com/thread.jspa?messageID=4349619

How to import a jar file in JSP

How to import a Jar file in JSP Page.
please reply its very urgent!

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Hi,
I would be thankful if someone could help me with this -
I need to call the external jar files into my EJB project - Here is what I have done and am getting runtime exception as -
java.lang.RuntimeException: java.lang.NoClassDefFoundError: com/glance/pdf/pt/PTDoc
1. Created a EJB project" HelloWorld " using Java perspective in NWDS 7.1 called with client as HelloWorldClient and EAR project as HelloWorldEAR.
2. Am working on HelloWorld project (1st one).
3. In my code I am instantiating a class which is a class in one of the external jar file that I need to refer in my project.
4. I have set the Java Build path but it works only for the compile time and fails during runtime.
5. Have read I need to create external library DC and refer in my project "HelloWorld".
Can anyone help me with exact steps what needs to be done - during creation of external library project and then for my "HelloWorld" EJB project. How would I be able to reference or set the external library project in my EJB project?
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Edited by: Shiv Khullar on Aug 30, 2010 9:39 PM

Hi Edson,
I tried it , but it still gives me runtime exception.
javax.ejb.EJBException: nested exception is: java.lang.RuntimeException: java.lang.NoClassDefFoundError: com/glance/pdf/pt/PTDoc
java.lang.RuntimeException: java.lang.NoClassDefFoundError: com/glance/pdf/pt/PTDoc
Steps I performed are -
1. Created a library project and created 2 Public parts "Compilation" and "Assembly"
2. Build the library project.
Now in my EJB project using Project Explorer - set the classpath and added both compilation jar and assembly jar files.
This is how the classpath entries for external library looks like -
<classpathentry kind="lib" path="/LocalDevelopmentLocalDevelopmentexternallibrarypdftoolsforwatermarkingdemo.sap.com/gen/default/public/WatermarkAssembly/lib/java/demo.sap.comexternallibrarypdftoolsforwatermarking~WatermarkAssembly.jar"/>
<classpathentry kind="lib" path="/LocalDevelopmentLocalDevelopmentexternallibrarypdftoolsforwatermarkingdemo.sap.com/gen/default/public/WatermarkCompilation/lib/java/demo.sap.comexternallibrarypdftoolsforwatermarking~WatermarkCompilation.jar"/>
I have also added the jar files I used in my external library project as "User Library" from Java Build Path . I dont do it , then the code fails during compilation itself.
Regards,
Shiv

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[email protected]

I have a solution write one batch file in that you specify class path and java home.
then give
java -jar Test.jar
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Runtime.exec method...
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How do I import Jar files in JSP? (novice)

Hello,
I have developed BC4J UIX JSP in JDev9i. Every JSP there is a URI that points to an Oracle website:
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hi
we need to call java classes (which are written separately in .java file )from jsp file. we need it for our project if anyone knows about please reply us.
bye
siva sankari

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<%
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that was very kind of u for replying to me. thanks a lot. Well, the web software i'm running is nothing soo great but it's simply a chat server side application. In this application, i'm using a thread where my datagram socket will keep on receiving data from clients and this server side apllication must response to the client. For example, if a client has added a new room, or a new user has logged in, the server side must take care to inform all other clients that a new user has just logged in or a new room has been created. The main method is in the "chatserver.class". Then, i've combined all my classes including the chatserver.class into a jar file. When i click on the jar file on my local system or on the server of a local area network, it works beautifully. So, my server side application works like that. I have to click on the chatserver.jar once and nothing else. No other interaction with the applicaion. But my problem is how to run it on a web-server like apache. Or even if i upload this software on a website, how do i make it run? Shall i implement jsp codes? If yes, how to execute such jar file using jsp?
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Calling jar file from jsp - serious problem !

Hi there, I'm trying to call a jar from a jsp file. I need an import clause in my jsp, to the class I want to use.
I'm using eclipse, and while i"m writing "<%= " and the begining of my class name , he autocompletes it and automatically puts an import of my class in the top of the html. It is very convenient , but the problem is that he underling the class name (in the impot: <%@page import="myClass"%>), and I get "The import myClass cannot be resolved" error.
I got an advice to put my class in a package, since it was in a default package. I did it. But now I have 2 problems:
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Hi MSoldier.
There are two ways to do this:
1) You use the java.lang.Runtime classes to start the java application in your JAR file, just like you would have done it from the command line. The Runtime class has three different exec() methods that can be used to run any program just like you would from the command line. Remember, using this method you will have to write everything just like if you run your Java application from the command line, incl. classpath etc. This way your Java application will be run as a separate process. When the application finishes the process is shutdown and the resources (RAM etc.) taken by it freed, just like when you shutdown any other application.
2) You can open the JAR file yourself from inside the JSP page, look inside the META-INF file to find the main class, and then calls the main class main method. There is an example of how to do this in the Java Tutorial available from Sun under the JAR files track. Check these links :
The Java Tutorial at Sun
http://java.sun.com/docs/books/tutorial/
The JAR File Tutorial at Sun
http://java.sun.com/docs/books/tutorial/jar/index.html
Opening JAR Files via the Java JAR File API
http://java.sun.com/docs/books/tutorial/jar/api/index.html
Note however, if you have just created some classes that you want to use from inside your JSP pages, and not a separate application that needs to be run separately, you should just include the JAR file with your custom classes inside the WEB-INF/lib directory. These classes are then automatically available to your JSP pages, just like the rest of the Java API.
I hope this answers your questions,
Kind Regards,
Jakob Jenkov
Software Architect
Jenkov Development
www.jenkov.com

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trying to login to software program known as hamspher (vip simulated ham radio, it downloaded the program but it will not allow me to login with call sign and pin. it has to be opened with what they call a jar file. how do i do this?

This is compatible with Mac? Especially Snow Leopard (if that is what you'e running)?
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How to call a .jar file in JSP

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