B4J Question jrdc2 only recognizes versions up to 55

jahswant

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• Jul 15, 2022

• #2

Are you compiling with java 8?

 

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Hamied Abou Hulaikah

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• Jul 15, 2022

• #3

It is not mine.
It is ready here.
Also this is source.

 

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Hamied Abou Hulaikah

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• Jul 15, 2022

• #4

If you mean b4j compiling, i use jdk-11.0.1

 

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Chris2

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• Jul 15, 2022

• #5

Hamied Abou Hulaikah said:

If you mean b4j compiling, i use jdk-11.0.1

Click to expand...

Maybe you need to use a later version....

List of Java class file format major version numbers?

I saw this list of major version numbers for Java in another post: Java Major version 24 68 23 67 22 66 21 65 20 64 19 63 18 62 17 61 16 60 15 59 14 58 13 57 12 56 11 55 10 54 9 53 8 52 7 51 6 50 5...

stackoverflow.com

You can use any version you want or need to,

Update OpenJDK

I've been using OpenJDK 14 + OpenJFX 14 from Erels beta release post for a couple of years now for all my B4X projects, it works perfect. My wish is simply to hope that Anywhere Software updates to OpenJDK 18 + OpenJFX 18 sooner rather than later, especially as the B4A and B4J download pages...

www.b4x.com

 

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Hamied Abou Hulaikah

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Longtime User

• Jul 15, 2022

• #6

Thank you for everyone

I googled & found something like this:

• ...
• 49 = Java 5
• 50 = Java 6
• 51 = Java 7
• 52 = Java 8
• 53 = Java 9
• 54 = Java 10
• 55 = Java 11
• 56 = Java 12
• 57 = Java 13
• ...

So, I solved it by downloading jdk 18 (latest up to today) & set it in B4J java path.
Cassandra now connected successfully.

 

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Solution