“Buffers have not been created” … whilst creating buffers

Question

I have (what I thought was) a straightforward BufferStrategy for a JFrame. It is created like so:

    // Buffer
    container.createBufferStrategy(2);                


        

Answer 1

Swing components are double buffered by default, so there is no need to play around with a BufferStrategy.

However when you get random errors like that its usually because code is not executed on the EDT. Read the section from the Swing tutorial on Concurrency for more information.