When will we use them?
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When should I use singleton?
explain local datetime api in java8?
which one the better thread emplemented thread or extended ?
How do you control extraneous variables?
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??
Give me some null interfaces in java?
using equals method overriding which objects are compared?i.e same class objects or other class objects?Explain me.
Why we go for collections in java?
Relationship between an event-listener interface and an event-adapter class?
what are abstract functions?
State the main difference between c++ and java?
What is a final class in java?