CS 101 - 9/6/11 3 Pieces of Software 1. Java Development Kit (JDK) 2. DrJava Integrated Development Environment (IDE) 3. bookClassses Library 4. Point DrJava to the bookClasses Edit Menu -> Preferences -> Extra ClassPath Basic Arithmetic Operations * - Multiplication / - Division % - Modulus (remainder from integer division) + - addition or string concatenation - - subtraction or "change sign" Basic Output System.out.println () ; System.out.print () ; Use of the input and output library operation from the bookClasses library SimpleInput - class name for the input operations SimpleOutput - class name for the output operations Each of these classes will have some number of methods that perform the operations Output SimpleOutput.showInformation()