Using Comparator to Sort an Array It offers an interface , called Comparator that is useful to impose a total ordering on a collection of...

Array Class Arrays class provides methods to perform certain operations on any one dimensional array.All the methods of the array class...

ArrayList Class An ArrayList is like an array, which can grow in memory dynamically.Memory is dynamically allotted and re-allotted to...

LinkedHashSet Class This is a subclass of HashSet class and does not contain any additional members on its own.It is a generic class that...

HashSet Class A HashSet represents a set of elements.it does not guarantee the order of elements.Also it does not allow the duplicate...