When this flag is used, the specified JAR file is the source of all user classes, and other class path settings are ignored. First start by writing a simple Java class with a main method for an application called TecmintApp , for demonstration purpose.
Next, we need to compile and pack the class into a JAR file using the javac and jar utilities as shown. Once tecmintapp. From the output of the above command, we encountered an error. To fix the above error, we will need to update the JAR file to include a manifest attribute together with our code.
MF file. MF to our tecmintapp. Finally, when we executed the JAR file again, it should produce the expected result as shown in the output. This manifest file contains the name of the class that should be executed when the JAR is run. Our directory has two files, the. We need the compiled. We first need to run the javac command to create the.
To create an executable JAR file, we also need a manifest file. The content of the manifest file is shown below. The -c flag is used to create an archive file. The -f flag is used to specify the file name. And the -m flag will include the content of the manifest file.
Note that the. To create a non-executable JAR file, we will exclude the -m flag. We don't need to pass the name of the manifest file to our command. We can use the following java command with the -jar option to run the executable JAR file. Instead of using the -jar option , we will use the -cp option to run a non-executable JAR file.
We need to specify the JAR file name and the main class name in the command. Any Java application can have any number of command-line arguments. These arguments are passed to the main method of the class through a string array.
The arguments should be separated by whitespace. If any argument contains whitespace, then we must enclose that argument in quotes. Let's create a new class with a main method. The main method should print the command-line arguments passed to it. We will compile the. To run the executable JAR, we will use the java -jar command and pass the arguments. Viewed k times. Improve this question. Community Bot 1 1 1 silver badge. Nirav Nirav 5, 4 4 gold badges 33 33 silver badges 44 44 bronze badges.
Add a comment. Active Oldest Votes. Improve this answer. Bala R Bala R k 22 22 gold badges silver badges bronze badges. More times when you usea a '. Thanks : — user Using these command you can run the jar file using the background process. Is there a way to execute a file with Java in the Bash Terminal? You can see if you already have java installed by running in a terminal:.
You can use openjdkjre , or openjdkjre , or openjdkjre instead, if you prefer - whichever is available on your version of Ubuntu. Linux is perfectly capable of running a foreign binary, like a JAR file.
This is how Wine works, for example. To run JAR files as executable do the following in a console. Cd to your JAR file and change it to executable you can also do this through file properties in Nautilus. If you use your custom compiled kernel without this module, binfmt-support won't work. Not all jar-Archives contain an executable class, declared to be started in the Manifest file, but if there is, this will work.
The dot is a shortcut for source , and it only works in the bash and some other shells, to include a script in the scope of the current session. The file has to be marked executable for you see: chmod. All of the above is true for shellscripts too, but they often have an extension.
If you don't want to start a new bash, you can use source, and you do so, to consume function definitions, aliases and variable settings. You might as well want to make a nice entry for the application in Unity.
You might need to log out and back in to see the effects. Install jarwrapper. After that and by adding the executable bit you can start the jar file just by entering the jarfile name. Executing a jar file using the regular syntax.
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