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MICHAEL JUNTAO YUAN is a researcher, developer, author, and advocate for Java and open source technologies. He is a research associate at the Center for Research in Electronic Commerce at the University of Texas at Austin and the Wireless Java columnist for JavaWorld. Yuan won the 2002 Grand Prize in Nextel, Sun, and Motorola’s national J2ME application contest. Currently, he leads an effort in BuzzPhone.com to develop a series of official blueprint applications for Nokia.