What all the ways to reduce the jar size

Dear folks
M developing an real time app. Its jar size now exceeded 150kb. I have used obfuscation but still im unable to reduce the size. Is there any way to reduce than obfuscation.

Pravin
can a single PNG file contain all my png images with
some index representation.Check out GameCanvas, TiledLayer and Sprite, there may be somthing there you can use.
Note -- I haven't used these myself, but I'm aware that they can show different frames from one png.
Also, there are at least 2 .png formats -- I am aware of PNG-8 and PNG-24. PNG-8 is considerably smaller.
Hope this helps, Darryl

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