Found it!

sudo update-alternatives --config java

then select manual 2

Hi I am using a PiNet classroom to program Arduino projects. When I open the programmer I cannot enter text. Last year I solved this by reconfiguring Java but I can not recall how I did it. It was a line of code with config Java etc. I cannot find the original reference so hoping that someone can he...

It appears to be a Java error. Will try and find out what's going on.

Hi
I have just installed Arduino IDE but find that we cannot type into the text field. Any ideas, sorry have a class and have not had time to search for an answer here as yet.

Thanks