Guava Charmatcher static initialization slow

Question

UPDATE: It looks like my 13.0.1 is calling code from this diffed CharMatcher.

http://code.google.com/p/guava-libraries/source/diff?spec=svn69ad96b719d7cd3d872a948d7454f1

Answer 1

Just tested with :

@Test
public void testCharMatcherSlow() throws Exception {
    System.out.println(CharMatcher.JAVA_DIGIT.matches('1'));
}

and it took 0.06sec to execute. Also looked at the CharMatcher code, and nothing could explain the slow behavior you encounter. You should replace the CharMatcher by a mock to see that it is not the issue and maybe use a profiler to find out the cause.