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Hello, Yes you can all BlackBerry Devices from OS 5-7 are Java based. Here is the link to the BlackBerry Java SDK - https://developer.blackberry.com/java/ Also you have posted this thread in the wrong category.
If you have an answer to your question then please click “Accept as Solution” Click on the LIKE on the bottom right if the post deserves credit. BB 8700 -> Bold 9000 -> Curve 8520 -> Bold 9700 -> Curve 9320 -> Bold 9900 -> BlackBerry Z10 + PlayBook 64 GB Wi-Fi