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Scans multiple files looking for a REGEX pattern, and summarised what it finds.

Check that class target versions are as expected in a Java jar.

JDisplay displays colorised program listings in web pages.

Converts text with many possible cleanups and transformations.

Aligns data in ASCII text files into neat columns.

Compresses HTML by removing unnecessary white space.

A framework for static html macros in Java to generate elaborate boilerplate.

Calculates American sales taxes state and district

Generates sample Java code to do 378 types of I/O.

This Applet will help you write Java code.