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i want to know how to make a jar app which will run on java mobile platform using class file of java. i know basics of java like inheritance,interface,string.....I tried this thing by compiling my java program of simple input/output and then converting it to jar using -jar in cmd.but i dont know why it is not working on mobile showing invalid file. plz help me.

Pointer
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1 Answers1

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If you want to create a jar application, starting from a java class,you don't have to use java -jar filename.jar, this is only for execution.

Try this: jar cf your_jar_app.jar your_class_file.class

c option is needed to create file and f option is needed because you want an output file.

Then you can execute typing: java -jar your_jar_app.jar

Hope this can help you.

For documentation: Oracle Documentation for creating JAR file If you are using NetBeans IDE, take a look to: NetBeans Packaging and Deploying Java Applications

Alberto Solano
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