what is polymorhism
what is inheritance?
what is Abstract n Interface?
what if two interfaces have same method and a concrete
class is implementing both the
interfaces. Will there be a compilation error?
What are mutable and immutable classes?
How can u make a class mutable?
when will u use dem ...explain with example?
what is overriding and overloading?
what is garbage collection?
what is Thread? how do dey communicate?
what are the different ways of implementing ?
have u used any messaging technologies?
what is synchronization?
what are some additions in java 1.5?
what are generics?
whst is advanced for loop?
what is finally block?
can u have a try in finally? yes!!
can u have a finally in finally?
how do you write junits?
when is a object eligible for garbage collection?explain?
a = null and b has ref to a will b be eligible to be
garbage collected?
sql questions like diff joins? how do dey work?
exception handling?
what is marker interface? what is the need??
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How do you define a set in java?
Can static methods access instance variables in java?
When should you use arraylist and when should you use linkedlist?
What are streams?
Java.util.regex consists of which classes?
Can you tell me range of byte?
Can we pass a primitive type by reference in java? How
What is static keyword in java?
What is run time polymorphism?
6 Answers eClerx, Elementus Technologies,
Distinguish method overloading and method overriding
Can final class have constructor?
What are the 8 primitive data types in java?