There are some system properties that can be obtained from Java code. Some of these examples are: Code example: System.getProperty(“os.name”) List of possible os values This is not a complete list. os.name values: Windows NT Windows 98 Windows XP…
A class file contains Java bytecode, it means, the code of a Java application that can be executed by a Java Virtual Machine (JVM). Class files have a .class extension, and are generated from source code files from Java files,…
This post explains how to install or update Java components JRE or JDK in operating system Ubuntu. It may be compatible with other Debian-like or Ubuntu-like Linux distros, like Linux Mint, etc. Step-by-step Procedure 1. Install repository Open a…
This post explains the most relevant concepts about the software needed to run and/or compile Java on a device. It also clarifies the differences between concepts like JVM, JRE, JDK, OpenJDK or Java SE. Java Platforms A Java platform is…
When referencing resources in a Java project, as for example photos, sound clips, video, etc., it is important to do it correctly because otherwise we may find errors when executing the application out of the IDE from a JAR file…
This post is about summarizing different ways to check if user is admin in Java Use system calls to check if user is admin A Java application can call system command through the class Runnable You can see this post…
This post explain different methods to call the operating system commands or native code from a Java application. Methods to call a native function Method 1. Use Runtime class Runtime class contains the exec method that allows the application to…
Packaging a Java App for Distribution on Windows There is a discussion about this topic on this link: Packaging a Java App for Distribution on Mac OS X Follow the instructions by Oracle: Packaging a Java App for…
This are the instructions to add an icon the a Java Swing application. Icon is loaded from an image. In order to load this image we make use of File and Buffered Image classes. Icon can be shown in different…
A developer may need to shut down a computer from a Java application. This post explains how it can be done. Ways to identify operating system In all solutions proposed here we are calling the OS directly to shutdown…