What is floating data type?
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System.out.println("somestring"); It will create any object or not
What is the difference between reader/writer and inputstream/output stream?
What are heap memory and stack memory and what are memory tables.
How we can execute any code even before main method?
can any body body expalin best definitions & best real time exaples for opps concepts.
Why null interfaces are used in Java?
What are the types of literals?
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??
How to create a custom exception?
What does function identity () do?
Give a practical example of singleton class usage?
is this possible to create an array of 0 length? if so how? if not so why? coz we have an array in main() likw this "static void main(String [] s) then what it signifies?