Use java.io package for output operations. 4. User Input: Use Java Console object, Scanner class, Swing JOptionPane, or System.in. 5. Exception Handling: Handle I/O exceptions to prevent ...

In prior Java 101 articles, I referred to the concepts of redirection, standard input device, and standard output device. To demonstrate inputting data, several examples called System.in.read() .

Many core Java classes and objects implement the Comparable interface, which means we don’t have to implement the compareTo() logic for those classes. Here are a few familiar examples: String ...

Implement a Java Scanner nextChar method. Naturally, all Java developers, after learning the Java Scanner class has no nextChar method, want to implement one of their own. It’s not that hard. By ...