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 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…
I programmed my own function, based on other examples: /** * Method that scale an image (BufferedImage) into the specified dimensions * @param sbi Source image * @param imageType Image type among BufferedImage.TYPE_… constants (example: TYPE_INT_ARGB) * @param dWidth Image…
This post explains how to create a JAR (Java ARchive) file for a Java project. Steps to create a JAR file for a Java project The steps to create a JAR file for a Java project are: Ensure your project…
This solution is only available from JDK 9. In other to set the JDK version on NetBeans, right click on Project > “Properties” >> “Sources” > “Source/Binary format”; and “Libraries” > “Java Platform”. package main; import javax.swing.JFrame; import javax.swing.JLabel; import…
This solution works only for .wav files. Source code: public void playSound() { try { AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(new File(“”).getAbsoluteFile()); Clip clip = AudioSystem.getClip(); clip.open(audioInputStream); clip.start(); } catch(Exception ex) { System.out.println(“Error with playing sound.”); ex.printStackTrace(); } } External References “Playing…
DevOps, from development operations, is a cultural and organizational movement that emphasizes collaboration and integration between software developers (Dev) and IT operations (Ops) teams. DevOps uses a set of practices and tools to integrate the work of dev and ops…
This post features software to create widget toolkits for creating graphical user interface (GUI). List of cross-platform Widget Toolkits Widget toolkits featured on this post: GTK Qt wxWidgets GTK Free and open source. C++. Qt Free and open source.…