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I'm trying to make a .jar file out of a java project I wrote in Eclipse and I'm following this tutorial to get it done. I went to my 'workspace' directory and created the .mf file outside my src folder and opened a cmd window on the same level as the .mf file. I started the command jar cmf mf-file.mf jartest.mf Class1.class Class2.class . . . but I have like 40 classes! Is this really the way to make a double-click runnable program to use??

user2651804
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    Have you tried using eclipse tools to create Jar file `File` -> `Export..` -> `jar` or `runnable jar`)? – Pshemo Apr 01 '14 at 19:15
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    `jar cmf mf-file.mf jartest.mf *.class`? You should not put classes in the default package. – JB Nizet Apr 01 '14 at 19:15
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    I would use Ant if i wanted to build a jar without an IDE. Check out [this tutorial](http://www.tutorialspoint.com/ant/ant_creating_jar_files.htm). Here's [a question](http://stackoverflow.com/questions/502960/eclipse-how-to-build-an-executable-jar-with-external-jar) about how to do it with Eclipse. – jahroy Apr 01 '14 at 19:18

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In Eclipse, right-click on your project and select Export. Under Java select Runnable JAR file and go from there.

davidfmatheson
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