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lightning
Asked: 2013-03-08 13:09:45 +0800 CST

How do I run a .JAR file via the terminal

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Mispelled classname in manifest.txt file caused this error

enter image description hereenter image description hereIm trying to run a java file outside of my IDE by exporting the .jar file to my documents folder and trying to display the text 'hello world'in the file on the terminal line. I attempted to create a Manifest.txt file with this in it,

Main-Class: lightning.java.hello.MyFirstClass

I then used this script to create a file MyJar.jar and got this back,

lightning@rigel5:~$ jar cfm MyJar.jar Manifest.txt lightning.java.hello/*.class java.io.FileNotFoundException: Manifest.txt (No such file or directory) at java.io.FileInputStream.open(Native Method) at java.io.FileInputStream.(FileInputStream.java:138) at java.io.FileInputStream.(FileInputStream.java:97) at sun.tools.jar.Main.run(Main.java:171) at sun.tools.jar.Main.main(Main.java:1177)

command-line

3 Answers

  1. Best Answer

    You can run java package using this command on your terminal:

    java -jar MyFirstClass.jar

    If you don't have Java Runtime Edition (JRE) you'll need to install default-jre package.

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  2. java /home/lighting/Documents/temp.jar Error: Could not find or load main class .home.lighting.Documents.temp.jar lightning

    This shows that you clearly have done a mistake in the META-INF/MANIFEST.MF

    See this Tutorial for more informations.

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  3. First you need a main-method in your class file - public static void main(String args[]){ ... } - probably done...

    In the jar-file you need a manifest.txt file - inside the class with the main method has to be noted like this -> Main-Class: MyPackage.MyClass

    To create one you can use the commandline tool jar ...

    If you don't have an manifest-file in your jar, you can just type:

    java -cp jarFileName.jar ClassNameWithMainMethod
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