Certification
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SCJP 6 , Prepare For SCWCD.
Presentation tier.
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JSP ,Struts2 , Ajax (Native and DOJO) , XSL..
Business tier
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EJB3 ,Spring ,AspectJ.
Data Base tier
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JDBC, Hibernate.
Operating Systems (developing environment)
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Linux (special SUSE),windows
Familiar with
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andorid,google App engine, OOP , AOP, OSGI,Design Patterns, UML , JMX.