java.io.*
You can't.
I believe a jar takes up less memory but requires java to run exe and jar (although a jar is similar to a zip file) can NOT be run on Mac software.
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The Java Archive (JAR) file format enables you to bundle multiple files into a single archive file and Typically a JAR file contains the class files and auxiliary resources associated with applets and applications
SIS files are Symbian and JAR files are java. The software that converts a SIS file to a JAR file is called Sis to Jar Converter 1.7.7.2.
You can change the file extension from .txt to .jar but .jar is a java format and is not normally used to wrap text.
We can easily convert the zip file into jar file by using the converting software, named winzip.
The most usual way is by way of the jar command. The jar command takes a series of inputs, usually a set of class files and folders that represent the binaries (.class, images, audio files, etc) files you wish to combine into a single jar file. The example given by Oracle on the command is as follows: jar cvf TicTacToe.jar TicTacToe.class audio images This takes the TicTacToe.class file, the folder audio, and the folder images, and combines them into the TicTacToe.jar file. The parameters cvf stand for "create", "verbose output", and and "file output"; these are the most common parameters when creating a jar file. For details, see the attached link.
In order to covert SIS files to JAR files, you will need to download a safe and virus free SIS to JAR converter. This then compresses the files and allows you to open them in JAR format.
If your file is .exe, the program could start working because one or more files were deleted. If your file is a .jar file, for example the minecraft launcher, It could stop working because some code is missing. If you mean like an error message, that means that necessary files or code is missing, or you are using a shortcut to a directory that doesn't even exist. If it's a .jar file and it isn't working, you're basically screwed.
please conver it now
This site has a program that lets you convert .txt to .jar . Perhaps it allows you to do the reverse , try it out. http://forum.mobiles24.com/showthread.php?t=15234 Here is a Chinese program that lets you convert jar to txt.