Interfaces in Java are used for defining a contract that classes can implement. They can contain method signatures, default methods, static methods, and constants. we must implement the methods defined in the interface in the implementing class. Constructor in an Interface A Constructor is to initialize the non-static members of ... Read More

In this article, we will create an array of triplet and try to sort them using the Comparable and Comparator interfaces. The term array of triplet means an array having three elements. An Array is a fixed-length linear data structure that stores group of elements with similar datatypes in a ... Read More

To enable communication between devices over the Internet, we use Internet Protocol suite. The UDP is one of the protocols of this suite and its full form is User Datagram Protocol. Unlike TCP, it is not reliable and also it is a connection less protocol. It does not establish any ... Read More

The Internet Protocol suite contains all sort of protocols that enables communication between devices over the Internet. TCP is a connection-oriented protocol, which means it maintains the established connection between two devices till the end of a communication. This is the reason it is used while web surfing, sending emails ... Read More

There are two types of Collections in Java. One is ordered and the other one is unordered collection. The ordered collections store their elements in the order in which they are inserted i.e. it maintains the insertion order of elements. Whereas, the unordered collections such as Map and Set do ... Read More

In Java, downcasting is the process of converting an object of parent class to object of child class. We need to perform the conversion explicitly. It is quite similar to what we do in primitive typecasting. In this article, we will learn about downcasting and what are the rules that ... Read More

Vectors implement the List interface and are used to create dynamic arrays. The array whose size is not fixed and can grow as per our needs is called as a dynamic array. The vectors are very similar to ArrayList in terms of use and features. In this article, we will ... Read More

In Java, the static methods are defined using static keywords but to declare instance variables we don't use static keywords. Generally, we can't access the instance variable by a static method. In this article, we will create an instance variable and then we will check the accessibility of that instance ... Read More

A Python list is a built-in, mutable datatype that stores multiple items or elements, separated by commas, within square brackets [ ]. The index of a list in Python starts from 0 up to length-1. We can retrieve/access elements at a particular index as follows - list_name[index] The ... Read More

With the increase in popularity of the Python programming language, more and more features are becoming available for Python developers. Usage of these features helps us to write efficient code. In this article, we will see 10 Python tricks that are very frequently used. Reversing a List We can reverse a ... Read More