Technoblog

JTL, the Java Tools Language (pronounced “Gee-tel”), is a high-level query language for selecting program elements, designed to serve the development of source code software tools for Java.
It is both simple and powerful: you may use it for various source code tasks, from just finding all classes with print() method to executing an extremely complex refactoring transformation.

JTL is very easy to use, its intuitive query-by-example syntax makes it really easy to write JTL queries. For example,

public static double method(int, int);

matches all static methods that receive two int parameters and return a double. And the following query

classWithFactory := is T, class { 
    no public constructor; 
    public static T method;
}

matches all factory classes - classes having no public constructor, but instance factory method.

Additional JTL examples may be found in JTL Language Tour. The examples above come from this excellent manual too.

The JTL was initially described in the JTL - The Java Tools Language paper and developed at the Computer Science department at the Technion. But now, after a years of development, JTL goes open source at sourceforge. There is no blog or RSS feed there yet, but I hope those will appear soon.