The javac -Xmaxerrs/-Xmaxwarns flags could be made more discoverable. Sometimes the diagnostic that best explains a failing build is truncated because the warning or error limit has already been reached, and the problem may be difficult to diagnose for users that aren't aware of -Xmaxerrs/-Xmaxwarns.

One possible solution would be to add something similar to e.g. compiler.note.unchecked.recompile, which notes that diagnostics were suppressed and mentions that recompiling with a larger value of -Xmaxerrs/-Xmaxwarns will show more information.

For example:

# 0: number, 1: number
compiler.misc.count.error.recompile=\
    {0} more errors not shown; recompile with -Xmaxerrs {1} to see them

# 0: number, 1: number
compiler.misc.count.warn.recompile=\
    {0} more warnings not shown; recompile with -Xmaxwarns {1} to see them