Platform for Object Oriented and Functional Programming Concepts

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 […]

1. Introduction In this article I will discuss how to assert an Optional. I have written a series of articles on Optional, which includes introduction, […]

1. Overview Generally speaking, container is an object such as box which can be used to hold something. In programming container means the same thing. […]

Collections aka containers are used to group objects into single entity. Once the objects are stored in a collection you can then perform operations on […]

1. Introduction In this article, we will be go through the new methods added in Boolean class under package java.lang. Boolean class wraps up the […]

1. Introduction In this article we will see how to convert an array i.e. primitive and object array to List. The following methods acts as […]

1. Introduction In this article we will see how to reverse the elements in a primitive array as well as in object array. We will […]

1. Introduction In this post we will see how to convert List<E> to array in 4 different ways. The following methods acts as a bridge […]

Fail-Fast iterators throw ConcurrentModificationException if the Collection is modified structurally. Fail-Fast iterators fail quickly and cleanly rather than risking the arbitrary non-deterministic behavior at undetermined […]

ConcurrentModificationException is thrown by methods when they discover concurrent modification of object which such modifications are not permitted. So if the collection is modified structurally […]

1. Introduction In this article, we will see how to traverse the List in a few different ways. This includes traversing using Iterator and without […]