Create Temporary File in Java

In this tutorial, we are going to learn how to create a new temporary file in a Java program by using core Java API.

Read QR Code from Image File or Base64 String in Java using ZXing

In this tutorial, we are going to learn how to decode the QR code image to read the encoded text in a Java application. We will use ZXing open source library in order to decode the image. Via different Java code examples we show you how to extract text from an image file and from encoded base64 string image.

Read Text Files in Java

In this tutorial we are going to explore how to read text files in a Java program. We provide different solutions to show how to use different Java core classes of Java IO and NIO packages to read files.

Spring Boot Web Application Export and Download Text File

In this tutorial we learn how to create a new text file and provide the user the web interface to download the text file in a Spring Boot web application. We will learn how to download a text file in Spring Boot with 5 different approaches to implement the feature.

Create New Files in Java

In this article we learn how to create a new file in a Java application by using core Java classes of IO and NIO packages.

Check Hidden Files in Java

In this post we are going to explore how to use Java IO and Java NIO core classes to check if a file is hidden or not.

Write Text to a File in Java

In this tutorial we are going to learn how to write text to a text file in a Java application. By different Java example programs we will explore different approaches to write a String into a text file using Java core classes.

Get Absolute File Path of a File in Java

In this post we will explore how to get an absolute path of a file in a Java application and return it as a String value.

Get File Size in Java

In this post we are going to explore how to get file size in bytes, kilobytes, megabytes or gigabytes in different Java versions.

Writing Excel File Using Apache POI Library in Java

Apache POI is and open source Java library allow you to read and write Microsoft Documents such as Excel workbook, Word document, Powerpoint presentation. In this blog post I will show you how to use Apache POI library to writing an Excel file.