B4J Question B4J on Raspberry + LCD

[rdkartono]

Hi Guys,

I have been playing with Raspberry and LCD in these days, and found a problem.
I have following setups :
1. Raspberry Pi 2 connect with HDMI 7 inch LCD Sainsmart using HDMI cables
2. Raspberry Pi B connect to Tontec 3.2 inch LCD (itontec.com) using their propietary connectors.

Both setup 1 and 2 have boot normally, can enter Xwindow (using startx), already updated, upgraded, and dist-upgraded. Both have running B4J-Bridge at background normally.

When i write a simple UI program using B4J, and send it to Setup 1 via B4J-bridge, the program can display and work normally.
However when I send the same program to Setup 2, nothing displayed.

Anybody have the same experience and having the solution ?

Regards,

Rudy.

 

[Erel]

In the long run you should avoid running a UI app on Raspberry Pi boards. Oracle has removed support for ARM boards in Java 8.

Make sure that Java 7 is installed on the device.

 

[rdkartono]

Thank you for the confirmation.
However newer Raspbian image already have built-in JDK 8, should I downgrade it to JDK 7 ?

How about using OpenJDK and OpenJFX ?

 

[Erel]

Yes, you will need to downgrade to Java 7.

How about using OpenJDK and OpenJFX ?

If Oracle doesn't support then it is probably not the way to go. Especially as UI apps are quite slow on Raspberry Pi.

You can instead create a server solution and access it from the browser.