Frank's simple file extractor is a simple program that can be used to
extract zip files

you can download the source code here
you can download the jar file here
you can download both class files here and here

how to get it running

1. download the program
If compiling from source code then download the source code
and run javac unzip.java, otherwise just download both class files.

2. run it
run java unzipapp

how to extract files with it
1. open a zip file by going to file->open zip file
2. extract the files by going to file->extract all