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??

0 Answers   JPMorgan Chase,

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when,where and how to use abstract class and interface

2 Answers  

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What are 3 boolean operators?

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What are static methods?

0 Answers  

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What are the object and class classes used for?

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Why Over riding is Run Time Polymorphism?

3 Answers   Genpact,

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Explain about interthread communication and how it takes place in java?

0 Answers  

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Is java 1.7 the same as java 7?

0 Answers  

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How do you include a string in java?

0 Answers  

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What is a hashmap used for?

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Is cout buffered?

0 Answers  

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What does || mean in code?

0 Answers  

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