When I type something wrong and save, eclipse marks my error.
But in the meanwhile, the console view pops up and tells me [2011-04-04 22:27:21 - Sudoku] Error in an XML file: aborting build. or blahblah. I don't want it.
I find an answer here How do you stop Console from popping up automatically in Eclipse, but my console view has not such two icons.