Michael Nascimento Santos is a seasoned developer with more than 8 years of experience with the Java platform, from J2ME to J2EE, and over 14 years of pratical programming experience. He co-leads JSR-310 (Date & Time API), is a Java Champion, an expert at 5 JSRs - JSR-207 (PD4J), JSR-250 (Common Annotations) and JSR-270 (Mustang/Java 6), JSR-296 (Swing Application Framework) and JSR-303 (Bean Validation) -, the java.net Community Manager for the JSR Community and a java.net blogger. He also helps to run SouJava, one of the largest JUGs in the world and collaborates with many open-source projects, such as Thinlet, AspectWerkz and genesis. He has spoken at many Java-related events, such as JavaOne 2003/2007, JustJava 2003/2004/2005/2006, Abaporu 2003, FISL 2004, COMDEX Brasil 2004, BrasilOne 2004 and Conexao Java 2005/2006.