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porting existing java SE code to Java ME

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We have a java application in Java SE , we hope to transfer existing java application from Java SE to Java ME , in order to get the less memory and CPU usage for the the application. Our code is most backend code, and no UI part.

I tested the most simple "Hello Word" Java application spends a round 10M memory. We need much less memory in embedded device and hope to use Java ME , instead Java SE, and hope to get better performance usage for CPU and memory.

I am new to Java ME and have a few question for Java ME development.

1, could we porting the existing Jave SE code to Java ME? Any recommendation for related document or link to potting existing java SE code to Java ME? ( Sorry I didn't find much, or I don't get the correct one)

2, From Oracle DOc, looks like Java ME need to run on Raspberry PI , etc from Does that mean Java ME must run on those device? Could we develop the code in Eclipse and port to embedded device in the final stage when development is completed?

3, Jave ME SDK only has windows version? I am using Mac, is there Java ME Mac version?

Thank you very much for any comments and suggestions!

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