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How to Get the File Extension of a File in Java 1. Overview In this quick tutorial, we’ll show how to obtain the file extension programmatically in Java. We’ll focus on three major approaches to the problem. In our implementations, the characters after the final ‘.’ will be returned. Therefore,… Continue Reading java-file-extension

How to Read a Large File Efficiently with Java 1. Overview This tutorial will show how to read all the lines from a large file in Java in an efficient manner. This article is part of the “Java – Back to Basic” tutorial here on Baeldung. Further reading: Java –… Continue Reading java-read-lines-large-file

Quick Use of FilenameFilter 1. Introduction Java has had functional interfaces before the addition of the informative annotation, @FunctionalInterface. FilenameFilter is one such interface. We’ll be taking a brief look at its usage and understand where it fits in the world of Java today. 2. FilenameFilter Since this is a… Continue Reading java-filename-filter

Java IO Tutorials Java IO – Working with Files Let’s start with the basic File operations: + Java – Reading a Large File Efficiently + Java – Rename or Move a File + Java – Create a File + Java – Delete a File + Java – Write to File… Continue Reading java-io

Java IO – Conversions This tutorial series focuses on core Java IO – Conversions: Java IO – To and From InputStream Java IO – To and From Reader 1. Java IO – to and from InputStream Let’s now cover the basic conversions – to and from an InputStream: 1.1. From… Continue Reading java-io-conversions

Transferring a File Through SFTP in Java 1. Overview In this tutorial, we’ll discuss how to upload and download files from a remote server using SFTP in Java. We’ll use three different libraries: JSch, SSHJ, and Apache Commons VFS. 2. Using JSch First, let’s see how to upload and download… Continue Reading java-file-sftp

Java – Directory Size 1. Overview In this tutorial – we’ll learn how to get the size of a folder in Java – using Java 6, 7 and the new Java 8 as well Guava and Apache Common IO. Finally – we will also get a human-readable representation of the… Continue Reading java-folder-size

Java – Reader to InputStream In this quick tutorial we’re going to look at the conversion from a Reader to an InputStream – first with plain Java, then with Guava and finally with the Apache Commons IO library. This article is part of the “Java – Back to Basic” series… Continue Reading java-convert-reader-to-inputstream