To make your code cohesive, you must know how to break it down so that each class and method does one thing well. If you create a method called saveCustomer, you want this method to have one ...

Method and variable handles vs. Java reflection To truly understand MethodHandles and VarHandles —what they do and why they are useful—it’s helpful to know a few things about reflection in Java.

The example code below shows how to use Java’s DirectoryStream in a method to list the files of a directory: public Set<String> listFilesUsingDirectoryStream(String dir) throws IOException { ...

How to use the JOptionPane’s showOptionDialog method Java’s JOptionPane provides a simple way to read input from the user and display information back. The JOptionPane’s list of methods includes many ...

To complete the use case, you must convert this one-character String into a single Java char with the charAt(0) method. Java Scanner char input code example The code to get Scanner input one char at a ...

In announcing Java 18 support for Java on VS Code as part of the April 2022 update, Microsoft highlighted changes including: Support Inlay Hints for Parameter Names: Developers can enable Inlay Hints ...