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Download a File From an URL in Java 1. Introduction In this tutorial, we’ll see several methods that we can use to download a file. We’ll cover examples ranging from the basic usage of Java IO to the NIO package, and some common libraries like Async Http Client and Apache Commons… Continue Reading java-download-file

Implementing a FTP-Client in Java 1. Overview In this tutorial, we’ll take a look at how to leverage the Apache Commons Net library to interact with an external FTP server. 2. Setup When using libraries, that are used to interact with external systems, it’s often a good idea to write… Continue Reading java-ftp-client

Find the Number of Lines in a File Using Java 1. Overview In this tutorial, we’ll learn how to find the number of lines in a file using Java with the help of standard Java IO APIs, Google Guava and the Apache Commons IO library. 2. NIO2 Files Note that,… Continue Reading java-file-number-of-lines

A Guide to Java Sockets 1. Overview The term socket programming refers to writing programs that execute across multiple computers in which the devices are all connected to each other using a network. There are two communication protocols that one can use for socket programming: User Datagram Protocol (UDP) and… Continue Reading a-guide-to-java-sockets

Java – Write a Reader to File In this quick tutorial, we’re going to write the contents of a Reader to a File using plain Java, then Guava and finally the Apache Commons IO library. This article is part of the “Java – Back to Basic” series here on Baeldung.… Continue Reading java-write-reader-to-file

Reading a CSV File into an Array 1. Overview Simply put, a CSV (Comma Separated Values) file contains organized information separated by a comma delimiter. In this tutorial, we’ll look into different ways to read a CSV file into an array. 2. BufferedReader in java.io First, we’ll read the records line by… Continue Reading java-csv-file-array