With one simple line of code, Java’s JOptionPane enables a program to prompt the user with a Windows-based ... students to console-based input with the JDK’s Scanner, Console or InputStream classes?

To perform user input with the Scanner class, follow these steps: Found in the java.util package, Java’s Scanner class can read input from the command line and return it as a String, BigDecimal or any ...

In prior Java 101 articles, I referred to the concepts of redirection, standard input device ... issue the following command line: java Echo. Suppose you need a utility program that reads an ...

The command-line ... java/com/infoworld/App.java to start a REPL loop. Modify App.java using the code in Listing 3. At heart, the REPL is an infinite while loop, which breaks when the user enters ...

Finding the version of Clojure you are using is as simple as executing one of the following commands inside the Clojure REPL, which you can enter by running clojure: # clojure Clojure 1.8.0 user=> ...