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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Difference between overriding and overloading in java?

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What is complexity in java?

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Explain public static void main(string args[]) in java.

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What are three ways in which a thread can enter the waiting state in java programming?

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Can I create any Marker Interface? If yes then how can I use it???

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What is a singleton class? Give a practical example of its usage.

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Can we overload the constructors?

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What is serial version uid and its importance in java?

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Why char array is preferred over string for storing password?

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How many types of string data types are there?

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define polymorphism in java

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