Using Apache Common IO Library in Java

Apache Commons IO library provides utility classes for working with files, streams, and other I/O operations in Java. In this tutorial, we will explore how to use some of the common functionalities provided by this library. Step 1: Add Apache Commons IO to Your Project Maven Dependency If you're using Maven, add the following…

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Java Arrays Class

In Java, the java.util.Arrays class is a utility class that provides various static methods to work with arrays. It includes methods for sorting, searching, copying, filling, and converting arrays. The Arrays class is part of the Java Collections Framework (java.util package) and is widely used when working with arrays in Java applications. Table of…

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Java Collections Iterator

In Java, the Iterator interface provides a way to traverse (or iterate over) the elements in a collection without exposing the underlying implementation of the collection. It allows you to sequentially access each element in the collection and perform operations like removal, if supported by the underlying collection. Table of Contents Introduction to Iterator…

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Java Collections: Queue and Deque

In Java, Queue and Deque are interfaces in the java.util package that provide implementations for FIFO (First-In-First-Out) and double-ended queue (Deque) data structures respectively. These interfaces are part of the Java Collections Framework and offer a variety of methods for adding, removing, and inspecting elements in a queue or deque. In this tutorial, we'll…

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Java Collections Lists Tutorial

In Java, the java.util.List interface represents an ordered collection of elements. Lists allow duplicates and maintain the insertion order of elements. There are several implementations of the List interface provided by the Java Collections Framework, each with its own characteristics and use cases. In this tutorial, we'll cover some common implementations of the List…

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Java Collections: Sets

In Java, a Set is a collection that does not allow duplicate elements. It models the mathematical set abstraction and provides operations for basic set operations like union, intersection, difference, etc. In this tutorial, we'll explore the various implementations of the Set interface in the Java Collections framework and how to use them. https://youtu.be/cFc7_ShK07Y…

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PowerMock vs. WireMock vs. Mockito

In the world of Java testing, frameworks like PowerMock, WireMock, and Mockito play significant roles. They each serve different purposes but are often used together to achieve comprehensive testing for Java applications. In this tutorial, we'll explore these frameworks, their purposes, and provide examples of how to use them. 1. Mockito Purpose: Mockito is…

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Documenting Java Code with Examples

JavaDoc is a tool provided by Java for generating API documentation in HTML format from comments in source code. It's an essential tool for Java developers to create clear and concise documentation for their classes and methods. In this tutorial, we'll learn how to use JavaDoc effectively with examples. Table of Contents What is…

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Apache POI Tutorial: Working with Excel Files in Java

Apache POI is a popular Java library that allows developers to create, modify, and display Excel files (.xls and .xlsx formats). In this tutorial, we will explore how to use Apache POI to perform common tasks such as reading, writing, and formatting Excel files. Table of Contents Introduction to Apache POI Setting up Apache…

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Getting Started with PDFBox in Java

Apache PDFBox is an open-source Java library that allows users to create, manipulate, and extract data from PDF documents. In this tutorial, we'll cover the basics of using PDFBox in a Java project step by step. Prerequisites Before getting started, ensure you have the following: Java Development Kit (JDK) installed on your machine (version…

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