Showing all 23 articles in this category.
File Operations - VBA, Python, VBS, C, C++ & DOS It is important for any programming language to open text file or get data from external file or write to a ext...
A regular expression (shortened as regex ) is an extremely useful way of matching common patterns and texts such as emails, phone numbers, URLs etc. almost all ...
ArrayList class is based on the List Interface in java which is based on array data structure. ArrayList is widely used for its functionality and flexibility it...
What is Collections Framework in Java? In Java collection is an object that represents a group of objects (such as the classic Vector class). A Collections fram...
Similar to Arrays in java Linked List is also a Linear data structure. In Linked List unlike arrays elements are not stored in a contiguous locations and they a...
What is Two pointer technique? A two pointer technique is a technique where given a sorted array we have two starting points or two points of consideration as t...
Maximum SubArray Sum is the problem of finding the sum of contiguous subarray elements with in an array of numbers form arr[1...n] You might ask what is a subar...
Queue Interface: The Queue Interface in Java Collections provide functionality as a Queue in the real-life, it extends the collections interface. It represents ...
Garbage Collection in Java Garbage Collection means and as the name implies freeing up of space by the waste objects or garbage to avoid memory leaks. Since obj...
A Queue is a linear data structure, following a particular order FIFO (First In First Out) where we can insert elements at one end and remove elements in the ot...
Singly Linked List is the list that holds the links to the next node and so on, each node points to the next node, but the main drawback is it does not point to...
What is DBMS? DBMS stands for Database Management System which is a software used to manage databases. For Example, MySQL, Oracle, etc. are some of the popular ...
The word polymorphism means having many forms. This feature of object-oriented programming allows us to perform a single action in different ways. In other word...
SQL commands: SQL commands are the instructions, given to a database to perofrm some functions and tasks there are also called queries, these commands or rather...
A shell script is a computer program designed to be run by the Unix/Linux shell. A shell is a command-line interpreter and typical operations performed by shell...
What are Transactions in DBMS? A small unit of a program that contains several low level tasks are called Transactions. Basic Concept of transaction : A transac...
Files The file is a collection of records related to each other. The file size is limited by the size of the memory and storage medium. There are two important ...
Indexed sequential access file combines both sequential file and direct access file organization. In indexed sequential access files, records are stored randoml...
Network Programming with Java Sockets The java.net package of the J2SE API contains a collection of classes and interfaces that provide the low-level communicat...
Introduction The development of personal computers brought about tremendous changes in business, industries, science & education. Business today relies on compu...
Stack is a linear data structure ( an abstract data type ) with a fixed capacity. Linear data structure which is simple to use and allows adding and removing el...
Network Programming The term network programming refers to writing programs that execute across multiple devices (computers), in which the devices are all conne...
Daemon thread in java: Daemon thread is a low priority thread providing services to the user thread. This thread runs in the background to perform tasks such as...