A critique of Java - Harold Thimbleby discusses why Java itself as a programming language leaves much to be desired and highlights a few serious problems with Java's design. - http://www.uclic.ucl.ac.uk/harold/srf/javaspae.html
Why I Am Not A Java Programmer - Paper by Michael G. Schwern in which he explains his reasons for disliking Java. - http://www.guild.net/~schwern/papers/Why_I_Am_Not_A_Java_Programmer/why.html
The Problems with JSP - Why pure JavaServer Pages isn't the solution. Describes alternatives and better ways to use JSP. - http://www.servlets.com/soapbox/problems-jsp.html
Softpanorama Java Page - A skeptical look at Java from the Open Source Software Educational Society. - http://www.softpanorama.org/Lang/java.shtml
Java Sucks - Rant by Jamie Zawinski, with many detailed criticisms of the Java language itself and its supporting libraries. - http://www.jwz.org/doc/java.html
Java is Afraid of Unions - By Rajesh Patkar. Unions give different views of looking at the same memory location. - http://www.rajeshpatkar.com/articles/javaunion.htm