Is it safe to convert jbyte to int?

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By looking at the definition of jbyte in jni.h I have:
typedef int8_t jbyte; /* signed 8 bits */
So is it is always safe to convert jbyte to a signed integer without casting?

What I have tried:

So far I have tried int8_t

Posted 18-May-21 3:29am

another_newbie

Updated 18-May-21 3:33am

PIEBALDconsult

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Richard MacCutchan 18-May-21 9:38am

It rather depends on what you are trying to do, and we cannot guess that.

BTW are you the same person that recently asked all the other JNI questions?

another_newbie 18-May-21 9:42am

Thank you for your comment. Regarding your question about me asking other JNI question, this is my first time asking a question in this website.

Richard MacCutchan 18-May-21 9:46am

Thank you. But we still do not know what you are trying to use jbyte for.

another_newbie 18-May-21 11:10am

Sorry I thought it was not necessary. I want to use jbyte as an integer and compare its value to an enum constant. I am getting this jbytes in java from a Greendao data table.

Richard MacCutchan 18-May-21 11:10am

So what happens when you try it?

another_newbie 18-May-21 11:24am

It was OK. What I meant was is it always safe to assume that jbyte is a small signed integer? I am sorry if my question is trivial. Maybe I should delete my question?

Richard MacCutchan 18-May-21 11:27am

Yes, the definition in jni.h makes it clear that it is a signed char type. And since Java types are not configurable then it will not change. Until some bright spark decides to 'improve' Java.

Richard MacCutchan 18-May-21 11:29am

No, please do not delete your question. The content could be useful for other developers.

another_newbie 18-May-21 11:32am

Thank you very much for your answer and feedbacks.

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