Data encryption, Standalone and web application development using third party tools like Struts, Struts2, HTML, JSP, Freemarker, Java, Spring, AOP, Rest, Hibernate/JPA, Java Socket, iBatis, MySQL, Oracle, MS SQL, Apache Maven, Eclipse, PGP Lib, Jasper Report, Quartz, JAXB, Git/Bitbucket, Apache Tomcat, APache POI