Tag Archive: technical interview

May
23

What is servlet, what is jsp?

Servlet : it is a Java class allowing to create data dynamically in an HTTP server. Data created can be presented under HTML format, XML format or any other supported browser format. Servlet runs dynamically in the server and extends their functions : database access, e-commerce transactions… Servlet is loaded automatically in the server and stay active waiting …

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May
23

Cite three objects included in the JSP page

The three objects are : out : output canal request : HttpServletRequest, request object response : HttpServletResponse, response object   See also :

May
23

Which are types of JDBC drivers?

There are 4 types of JDBC drivers: JDBC-ODBC bridge driver : it allows access to DBMS via ODBC.  It is accessible in J2SE platform via sun.jdbc.odbc.JdbcOdbcDriver. Native API partly Java driver : it translates JDBC’s calls to a particular DBMS through a mixture of Java’s API and native API. JDBC-Net pure Java driver : it is known …

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May
20

What does volatile mean in Java?

«volatile» is a keyword used when a variable can be used by many threads. It allows an asynchronous access to this variable. By using this keyword the JVM

May
20

What does transient mean in Java?

«transient» is a keyword used to prevent serialization of certain variables in a class. It’s useful if we have to manipulate a sensitive variable which should not appear in a file or a stream (e.g passwords or some variables in games programs).

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