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Java Set is a collection of elements (Or objects) that contains no duplicate elements. Java Set is an interface that extends Collection interface. Unlike List, Java Set is NOT an ordered collection, it’s elements does NOT have a particular order. Java Set does NOT provide a control over the position where you . . . Read more
Difference between HashSet and LinkedHashSet? It is the child class of HashSet. A LinkedHashSet is an ordered version of HashSet that maintains a doubly-linked List across all elements. Contains unique elements only like HashSet. Provides all optional set operations, and permits null elements. Maintains insertion order. LinkedHashSet doesn’t have its . . . Read more
HashSet in Java and what is FillRatio or LoadFactor? The underlying data-structure is Hashtable. Duplicate objects are not allowed. Insertion order is not preserved and it is based on HashCode of objects. Null insertion is possible (only once). Heterogeneous objects are allowed. Implements serializable and cloneable but not the RandomAccess interface. . . . Read more