Tip: Install & Run Multiple Different Versions of the same Java J2ME Program on your Mobile Device
16 Mar
Posted by Abdul Aziz as Nokia S60, Sony Ericsson UIQ, Symbian, Tips, Tutorials
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At times, you may want to run different versions of the same Java J2ME application simultaneously on your mobile device without overwriting the older version. You may want to do this when an older version of a program may have a feature that the latest version does not have.
Here is a step by step on how to go about doing it:
1. Download and install WinRar
2. Open the JAR file with WinRar
3. Open the folder META-INF and copy the MANIFEST.MF file to your computer
4. Open the MANIFEST.MF file with Notepad and modify the MIDlet-Name and MIDlet-Description fields to something different. For example, if the original name & description of the application is “Mobile GMail”, change it to “Mobile GMail 1″ or something else. Save the changes.
5. Copy the modified MANIFEST.MF into the META-INF folder and proceed with installing the program on your mobile device.
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One Response
Decoder
March 16th, 2008 at 12:55 pm
1Very interesting. I just attempted to do this with Mail for Google (Gmail mobile for Google Apps) however once I edited the MANIFEST.MF and changed the names and then copied the file back into the .JAR file. Once I attempted to install the file on my N95 i received an error advising of “invalid JAR file” and i cannot proceed any furthur with the install.
Do you have any ideas as this is a fantastic work around for when you have multiple Google Apps emails such as I.
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