If you work with anonymous classes a lot (as Wicket applications do), you sometimes get confronted with compiler/tool messages referring to anonymous (inner) classes with names like MyPage$1$1$2 (for instance in FindBugs reports). Its pretty tedious to figure out which class is meant. Maybe there’s a better way, but what I do is go to the target directory and call “javap MyPage$1$1$2.class”. This produces a decompiled version of the class which makes it pretty clear which class it is.