Method Argument Checks

http://google-collections.googlecode.com/svn/trunk/javadoc/com/google/common/base/Preconditions.html

JWatch - A Quartz Monitor

Selbst noch nicht ausprobiert, klingt aber interessant!
http://code.google.com/p/jwatch/

Java 1.7 - What's new?

Foud this today: http://inebium.com/post/java-7-new-release-performance-code