1. Overview Empty collections indicate that the collection does not have any values in it. All the empty collections are immutable which means once created […]

1. Introduction In previous article I discussed Tuple is an immutable collection or finite list of elements of same or different types. In this article, […]

1. Introduction In this article, we will explore what is and how to write a Tuple in Java. Tuple is an immutable collection or finite […]

1. Introduction This is third article in Java Generics. In previous articles I discussed about Introduction to Java Generics and cast guarantee provided in Generics. […]

Immutable objects are those objects that cannot be modified once created. Please read the first article in Immutable Objects series to understand what advantages are […]

Let me start this article by quoting Brain Goetz. Immutable objects are simple. They can only be in one state, which is carefully controlled by […]

1. Introduction java.util.Collections class is static utility class which contains polymorphic algorithms, static factories and wrapper methods. It also contains several other interesting methods. All […]

1. Introduction In previous article I wrote about Introduction to Java Generics. In this article we will see what cast guarantee is. Cast guarantee mean […]

1. Introduction Generic programming means a code is written in terms of type which can be specified later and those types can be used as […]

1. Introduction In previous few articles we have seen how not to use Optional and explored few areas by refactoring code in better way rather […]

This article is going to very interesting as we will explore several different ways on how to sort a HashMap using keys. 1. Introduction Usually […]

1. Introduction Get all numbers greater than x where x is some number. For example, get all the numbers greater than 10. 2. Content We […]

1. filter(Predicate) Returns a stream consisting of elements of this stream which matches the given Predicate. 2. map(Function) Returns a stream consisting of elements that […]

1. Overview BufferedReader is a class that is used to read text from character input stream which provides efficient reading of characters, arrays and lines. […]

1. Overview Iterable interface provides a contract which is, if implemented the object will be allowed as a target of for-each loop. Collection interface extends […]

1. Overview In this article, we will see how to add all the elements of an array. For example we will use int[] array. Embed […]

1. Overview In this article, we will see how to search for a value in an array. For example we will use int[] array. Embed […]

Diagram built in BlueJ The core collection interfaces encapsulate different collections such as List, Set, Queue and Deque. Collections operate on generics. Collection Interface declaration […]

1. Overview In this article, we will see how to search for an object in an Object[] array. For example we will use String[] array. […]

1. Overview In this article I will write about converting an Iterator to Collection. Let us begin. Embed from Getty Images 2. Content Below are […]