Update contents of a file within a jar file
By: Naren in Java Tutorials on 2015-04-24
Recently there was a change of IPs in my servers. Therefore some of the applications stopped working. For example, there was an application that was running as an executable jar file. The access to other resources from that application was using IP Addresses and there was a config file named bcconfig.xml that had all the IP addresses of various resources the application needs to access.
This bcconfig.xml was bundled within the jar file and as this was a legacy application we did not want to recompile the source files and regenerate the entire jar file. So what we did is to just make changes to bcconfig.xml and repackage it to the same jar file. If you are facing with similar issue, then there is a simple method to just update the bcconfig.xml file and update the jar file. Once your bcconfig.xml file is ready with the new IP addresses, just run the below command to update the jar
#jar uf mlsscheduler.jar bcconfig.xml
The other way to do is to just use applications such as WinRAR to open the jar file and then drag and drop the files in it. :). It really works.
Add Comment
This policy contains information about your privacy. By posting, you are declaring that you understand this policy:
- Your name, rating, website address, town, country, state and comment will be publicly displayed if entered.
- Aside from the data entered into these form fields, other stored data about your comment will include:
- Your IP address (not displayed)
- The time/date of your submission (displayed)
- Your email address will not be shared. It is collected for only two reasons:
- Administrative purposes, should a need to contact you arise.
- To inform you of new comments, should you subscribe to receive notifications.
- A cookie may be set on your computer. This is used to remember your inputs. It will expire by itself.
This policy is subject to change at any time and without notice.
These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:
- Although the administrator will attempt to moderate comments, it is impossible for every comment to have been moderated at any given time.
- You acknowledge that all comments express the views and opinions of the original author and not those of the administrator.
- You agree not to post any material which is knowingly false, obscene, hateful, threatening, harassing or invasive of a person's privacy.
- The administrator has the right to edit, move or remove any comment for any reason and without notice.
Failure to comply with these rules may result in being banned from submitting further comments.
These terms and conditions are subject to change at any time and without notice.
- Data Science
- Android
- React Native
- AJAX
- ASP.net
- C
- C++
- C#
- Cocoa
- Cloud Computing
- HTML5
- Java
- Javascript
- JSF
- JSP
- J2ME
- Java Beans
- EJB
- JDBC
- Linux
- Mac OS X
- iPhone
- MySQL
- Office 365
- Perl
- PHP
- Python
- Ruby
- VB.net
- Hibernate
- Struts
- SAP
- Trends
- Tech Reviews
- WebServices
- XML
- Certification
- Interview
categories
Related Tutorials
Read a file having a list of telnet commands and execute them one by one using Java
Open a .docx file and show content in a TextArea using Java
Step by Step guide to setup freetts for Java
Of Object, equals (), == and hashCode ()
Using the AWS SDK for Java in Eclipse
DateFormat sample program in Java
concurrent.Flow instead of Observable class in Java
Calculator application in Java
Sending Email from Java application (using gmail)
Comments