Question { Bally Technologies, 19494 }

Driver manager is a class/interface.

Answer

DriverManager is a class that present in java.sql package
which is used to connect the our application with database.
that is DriverManager containing getConnection() method
that return Connection object

Question { IBM, 8152 }

what is difference between method overloading & method
overridding with example?

Answer

overloading:
method overloading means method name is same and different
parameter ie different signature.. and overloading method
are present in same class
for eg ,
let us consider show() is a method
1.show(int a)
2.show(int a,int b)
overriding:
method overriding means method name is same and
parameter also same. these are present in different levels
of class
for eg,
let us consider show() is a method
1.show(int a)
2.show(int a)

Question { CSS, 5967 }

how to handle exceptions in core applications?

Answer

in core java, we can handle the exception by the following
key words
1.try
2.catch
3.finally
4.throws(it throws only predefined exception)
5.throw(it throw both predefined and userdefined exception)

Question { 7874 }

What is Servlet?

Answer

Servlet:
simply say,Servlet is a serverside java code ... it is
mainly used to write business logic
there are two types of servlet


1.Generic Servlet
2.HttpServlet