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JDBC allows java applications to connect to relational databases. Database can be reside in local, network or cloud. JDBC Features Provide portable access to various databases Can build custom sql statements JDBC Supported Databases MySQL Oracle DB2 PostgreSQL Key Classes of JDBC java.sql.DriverManager java.sql.Connection java.sql.Statement java.sql.ResultSet java.sql.DataSource JDBC Development Process Get a connection to the database ex :  jdbc:<driver protocol>:<driver connection details> Create a statement object Execute the Query Process the result set

Object Object is an entity that has state and behavior Class Collection of objects is known as class. There are four main types of OOP concepts Inheritance Object acquire all the properties and behavior of parent object Improve code re-usability Polymorphism One task is performed by different ways Use method overload and override Abstraction Hiding internal details and showing functionality Use abstract class and interfaces Encapsulation Binding code and data into a single unit

JEE stands for Java Enterprise Edition. JEE can use for business, web, client and information applications. JEE Applications Web components - JSP,Servlets Web services - JAX/WS, JAX/RS Data access in Java - JDBC/JPA Persist and entities and enterprise Java beans To create JEE project in Eclipse  Create Dynamic Web Project Under the web contents create your web pages (html files) You can use Apache Tomcat server to deploy your web application. To change URL  To change the URL of servlets that you have built, you have to configure web.xml file. As an example, you have to add following lines to your web.xml file   <servlet>   <servlet-name>helloworld</servlet-name>   <servlet-class>com.amali.surverlet.HelloWorld</servlet-class>   </servlet>   <servlet-mapping>   <servlet-name> helloworld</servlet-name>   <url-pattern>/hidden/hello.do</url-pattern>   </servlet-mapping> I