Here's how to make classes, fields, methods, constructors, and objects work together in your Java programs.

How to add Java Scanner char support The Java Scanner class provides methods that take String input and convert that String into any Java primitive type you might need, except for one: the char.

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

How to write a Java palindrome program for Strings Good programmers need to create code that efficiently solves problems, using various methods. A popular academic exercise is to create a program that ...

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 { ...