Description of problem:

From javac man page, section "PROGRAMMATIC INTERFACE":

EXAMPLE
    To compile as though providing command-line arguments, use the following syntax:

    JavaCompiler javac = ToolProvider.getSystemJavaCompiler();
    JavaCompiler javac = ToolProvider.getSystemJavaCompiler();


I believe it's a bug. Second line of the code snippet is the same as a first one.
Same example, but in older version of the javac man page [1] looks like following:

    JavaCompiler javac = ToolProvider.getSystemJavaCompiler();
    int rc = javac.run(null, null, null, args);

Which seems to be much better.

[1]: http://docs.oracle.com/javase/7/docs/technotes/tools/solaris/javac.html

Version-Release number of selected component (if applicable):
java-1.8.0-openjdk-devel-1.8.0.5-4.b13.fc21.x86_64