To use an option, type it's flag (usually a dash followed by a letter or two dashes followed by a word) between the command's name and any arguments you provide. You can find these by running a JAR file that requires arguments without any arguments or just by Googling the command for documentation. These options are typically specified below the usage description. When you run certain commands from the Command Prompt, you can include options to modify the command. To supply the JAR with these arguments, simply type them after the 'java -jar xml2csv-conv.jar', each separated by space: java -jar xml2csv-conv.jar my_original_data.xml my_converted_data.csv. Usage: xml2csv-conv ) and also a list of options usable with this JAR file.įor example, the XML-to-CSV converter ( xml2csv-conv.jar) on the CSCI 0931 resources page requires two arguments: a source filename and a destination filename. In this case, your command prompt is displaying a usage description (e.g. Most likely, you have Java installed, but there is another, different problem with running the JAR file: the JAR file may require certain inputs (or arguments) in order to do its job correctly. For example, if you do not have Java installed on your computer, an error saying "java: command not found" may have appeared.
This tells the computer that you want to use Java to run a JAR file called myfile.jar.Ĭhances are the Command Prompt printed out some lines of text that aren't what you expected. To run a JAR file, type 'java -jar myfile.jar'.
JAVA JAR FILE RUN .EXE
exe binary file, producing a result similar to the one explained in this tutorial.Now that we're on the Desktop, we can actually run our JAR file.
JAVA JAR FILE RUN WINDOWS
In the case your are a Windows guy, obviously this will not work (except you will run a Linux compatibility layer like Cygwin).Īnyway exist tools that are able to wrap a Java application into a native Windows.
The script is smart enough to pass any command line parameters to the Java application transparently. Now you can execute the app just typing n on your shell terminal. Than append the jar file to the saved script and grant the execute permission to the file resulting with the following command: cat stub.sh helloworld.jar > n & chmod +x n Let's say that you have a runnable jar named helloworld.jarĬopy the Bash script below to a file named stub.sh #!/bin/sh Too complex? Much more easier to do in practice, than to explain! The script when executed will launch the Java interpreter specifying itself as the jar to run. Taking advantage of this possibility the trick is just to embed a runnable jar file into a Bash script file. This technique it is based on the ability to append a generic binary payload to a Linux shell script. There are many reasons why it would be preferable to have your app runnable by simply invoking it on the terminal shell like any other command. $ jar -cvmf MANIFEST.MF helloworld.jar HelloWorld.classīut this still requires your users to invoke the Java interpreter with the -jar option. $ echo Main-Class: HelloWorld > MANIFEST.MF
The manifest must contain an entry Main-Class that specifies which is the class defining the main method for your application.
JAVA JAR FILE RUN HOW TO
There are plenty of tutorials showing how to implement this feature using Ant, Maven, Eclipse, Netbens, etc.Īnyway in its basic form, it just requires to add a MANIFEST.MF file to the jar package.
JAVA JAR FILE RUN ARCHIVE
Every Java programmer knows - or should known - that it is possible to create a runnable Java package archive (JAR), so that in order to launch an application it is enough to specify the jar file name on the Java interpreter command line along with the -jar parameter.
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