Why do we need hashset in java?
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Implementations of set interface?
Can we convert stringbuilder to string in java?
What is static in java?
Can we serialize singleton class?
How can we create objects if we make the constructor private ?
What do you mean by jjs in java8?
write a program that list all permutations of ABCDEF in which A appears before B?
When super keyword is used?
for(i=0;i<100;i++) { int i=method();//method returns no's from 1 to 10; /* insert some stmts which can give output like no.of times numbers(1-10) returned. (for example if it returns 2 then i want output how many times 2 returned) like that i want output for no's 1 - 10 how many times each no returned. */ }
What is collection class in java? List down its methods and interfaces.
What is Yield() method when we r using this ? tell exactly
What is e in java?
Core Java 
