How to Resize Screen Resolution in Java Games

Here is a step by step guide on how to change the screen resolution of Java games, to fit the size of your mobile phone's screen. The whole process requires the installation of a third party application, called JarResize. The application is free and needs to be installed on your PC. After the installation is finished, download on your PC the Java game that you want to change the resolution.

For the next step you will need to know the original resolution of the game and the size of your screen. When you find out the info open the JarResize app and select both resolution (original resolution and desired resolution). Then click on the Select & Resize option and select the game's .jar file that you previously downloaded. Close the application and install the game on your phone. Hopefully you will now be able to play with your desired resolution.

If you don't find the third party application or simply don't want to use it, you can change the screen's resolution manually. Just download the Java game on your desktop and open it with an archive app (WinRar, WinZIP). You should be able to find a folder called META-INF. Inside the folder there's a file called MANIFEST.MF. Drag and drop the MANIFEST.MF to your Desktop and open it using Notepad and at the end of the file, add the following two lines to the MANIFEST.MF file.

Nokia-MIDlet-Original-Display-Size: xxx,yyy Nokia-MIDlet-Target-Display-Size: zzz,www

Now save the file and drag the file back to the .jar file folder META-INF using WinRAR. The letters in those two lines are the Original resolution of the game and the Desired resolution. So, your lines should look something like this:

Nokia-MIDlet-Original-Display-Size: 176,208 Nokia-MIDlet-Target-Display-Size: 352,416

The resolution may vary, so you can put any values that you think it will work for your phone. After you replaced the original MANIFEST.MF file with the one edited, you can install the game on your phone and enjoy the game on full screen.

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