What is a package in java? List down various advantages of packages.
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Can a static class have a constructor?
write a program to create an vector and listeterator.and value should be enter through keyboard.
What is heterogeneous in java?
What is try-with-resources in java?
These static constructors are correct ? class A { statc intA() { } static A(int x,int y) { } static A(int x) { } }
Why method overriding is used?
what is the collable collections in java?
Can we sort hashset in java?
why should we get the following error ? Exception in main method NoClassDefFoundError:classname could anyone give the detail clarification on how java compiler can look for .class file?
How do you empty a list in java?
what is the default value of a variable char?(If not assigned)
What is the difference between variable & constant?
Core Java 
