JUnit 5 with Gradle Setup

In this article we will setup a Java project that using JUnit 5 and Gradle build.

Apache POI Update Excel File Content

In this article we show you how to update existing Excel file content in Java using Apache POI library.

Apache POI Excel Cell Fonts

In Java code examples below we show you how to use Apache POI library to generate Excel file with custom font style for Excel cells such as bold, italic, underline, strikeout, type offset, font name, font height and color.

Apache POI Merging Excel Cells

In Java example code below we show you how to create Excel file with merged cell.

Log4j 2 Properties Configuration with Console Appender

The Java code example below to show you how to configure Log4j 2 with Properties configuration file to log messages to sytem console using Console appender.

Log4j 2 YAML Configuration with Console Appender

The Java code example below to show you how to configure Log4j 2 with YAML configuration file to log messages to sytem console using Console appender.

Log4j 2 XML Configuration with Console Appender

The Java code example below to show you how to configure Log4j 2 with XML configuration file to log messages to sytem console using Console appender.

Log4j 2 JSON Configuration with Console Appender

The Java code example below to show you how to configure Log4j 2 with JSON configuration file to log messages to sytem console using Console appender.

Google Guava in Java to join String with Joiner

Java Code Examples for using com.google.common.base.Joiner class

Apache Commons IO to get Readable File Size in KB MB GB TB

Java Code Examples for using byteCountToDisplaySize() method of org.apache.commons.io.FileUtils class