The Ebooks are about the Java Programming Language. The files come in two formats: CHM and PDF. CHM files are basically bundled HTML files and can be extracted to plain HTML.
Recommended Books for Programmers
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Algorithms In Java, Parts 1-4, 2002.chm
Java Concurrency In Practice, 2006.chm
Ant, The Definite Guide, 2005.chm
Professional Eclipse 3, For Java Developers, 2005.pdf
Beginning Hibernate, 2006.pdf
Java, Java, Java - Object-Oriented Problem Solving, 2005.chm
Directory Layout (size in MB)
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27M ./Advanced Topics
27M ./Ant
33M ./Application Servers
11M ./Data Structures
40M ./Design Patterns
63M ./Eclipse
90M ./Enterprise
41M ./General
18M ./Hibernate
78M ./Learning Java
58M ./Swing, Graphics
6.5M ./Virtual Machine
v.v..

Download:

FILESONIC.COM
http://www.filesonic.com/file/4318766135/Java Programming Books Collection.rar

FILEJUNGLE.COM
http://www.filejungle.com/f/Ez6Uh2/Java Programming Books Collection.rar