Our Online Store have the new products: RFID antenna board. Currently it can work with JC10M24R and JCOP4 card chips.
Compared with normal cards, the antenna board module has a smaller size and fixed holes, which is easy to integrate in the IOT(Internet Of Things) project.

Applet Compilation/Export file question

Applets Development Guide

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sullycrypto
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Applet Compilation/Export file question

Post by sullycrypto » Sun Jan 24, 2016 1:37 am

Hi there! I went to compile my JavaCard applet and got the following message:

warning: This package requires int support.
error: export file util.exp of package java.util not found.
conversion completed with 1 errors and 1 warnings.

How do I resolve the warning and the error? Any clues would be appreciated! :-)

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UNKNwYSHSA
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Re: Applet Compilation/Export file question

Post by UNKNwYSHSA » Sun Jan 24, 2016 9:43 pm

warning: This package requires int support.

This is only a warning. Check your code, the variable(s) with type "int" you used. Normally, javacard uses type "short". If you have to use type "int", please make sure that your card support it. (The JCVM must implement the class javacardx.framework.util.intx.JCint)

error: export file util.exp of package java.util not found.

JavaCard API didn't support the package java.util. What's the api you used in package java.util? Tell us first.

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manhle
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Re: Applet Compilation/Export file question

Post by manhle » Wed May 20, 2020 9:54 pm

I have the same warning, that is Image
So what is the solution now, I do still not fix that. I was checked again I am sure that I do not use the integer variable.

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