J2EE - Application Servers, Java - ORM, Java - Spring Framework, Core Java, SQL Development Languages, Java - Swing Applet, Java - Web Presentation Frameworks, Java - Messaging Implementation, Java Web Services
Strong Development Skills in Java (JDK 1.5 OR 1.6) - must have
Hands on with Java 5 Features (not necessarily with all but should have hands on with few of these): Enums, Annotations, Generics, Auto boxing, Loops, Concurrent APIs etc.