Can run jar files

Last Updated: May 6, This article was written by Jack Lloyd. He has over two years of experience writing and editing technology-related articles. He is technology enthusiast and an English teacher. This article has been viewed 2,, times. Most JAR files are simply containers for data that another program needs to run with Java; therefore you cannot run these files and nothing will happen when you double-click them.

Similarly, most executable JAR files are downloaded as installation files to install applications or programs. Therefore, you should double check that you have the right JAR file designed for your operating system if you are having problems opening the file. Install Java on your computer. Make sure the JAR file is executable.

Double-click the JAR file to open it. Did this summary help you? Yes No. Log in Social login does not work in incognito and private browsers. Please log in with your username or email to continue. No account yet? Create an account. Edit this Article. We use cookies to make wikiHow great. By using our site, you agree to our cookie policy. Cookie Settings. Learn why people trust wikiHow.

Download Article Explore this Article methods. Tips and Warnings. Related Articles. Article Summary. Method 1. Install Java on your computer if it isn't installed. You can't run JAR files without Java installed on your computer. You may have to restart your computer for Java to be fully implemented. Double-click the JAR file. When you click on the javaw, a box will appear.

Once this is done, you can directly click and run the JAR file. Give the required permissions to the command prompt, such as making changes to the system. Once the dark interface of the command prompt opens up, type the below-mentioned command: —. Hit enter after you have typed this command, and then you should be able to open and run your JAR file. Another issue that a lot of users face with jar files is that their jar files are in the format of WinRAR files, and when they try to open it, it opens in WinRAR instead of the java format.

To fix this problem, one has to convert the file from WinRAR to actual java format. This issue mainly arises due to 2 things: —. JDK vs. Note that the text file must end with a new line or carriage return. The last line will not be parsed properly if it does not end with a new line or carriage return. MF file. MF is present in jar. You have to add a manifest to the jar, which tells the java runtime what the main class is. Create a file 'Manifest.

Change 'your. MainClass' to your actual main class. You can use any ZIP-utility for that. Executing the jar file. No need to worry too much about manifest file. Make it simple and elgant. If you don't want to deal with those details, you can also use the export jar assistants from Eclipse or NetBeans. Run Jar file using java program cmd by supplying arguments and get the output and display in eclipse console. In Eclipse to find Short cuts :. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 12 years, 5 months ago. Active 2 years, 9 months ago. Viewed k times. I created a JAR file like this: jar cf Predit. Improve this question. Martin Prikryl k 47 47 gold badges silver badges bronze badges. Add a comment. Active Oldest Votes. You need to specify a Main-Class in the jar file manifest. You need two files: Test.