Java Programming for Beginners. Page 1. Java Programming for Beginners. CEMC Summer Institute for High School CS Teachers. Byron Weber Becker …

Hands On • Think about what additional capabilities a robot should have to make your life as a PickSquare programmer easier (but not trivial). Add those capabilities to MyBot.java. Modify PickSquare2.java to pick up all the things, as before, but using your new kind of robot. • To compile, either use javac separately on each file or both at the same time javac PickSquare2.java MyBot.java java PickSquare2 Writing a Class from Scratch An object like a robot has a bunch of information it needs to keep about itself. For example, open and run Vars.java: import becker.robots.*; public class Vars extends Object { public static void main(String[] args) { City waterloo = new City(“pickSquare.txt”); Robot karel = new Robot(waterloo, 1, 0, Direction.EAST); Robot sue = new Robot(waterloo, 5, 1, Direction.NORTH); karel.setSpeed(0.5); while (karel.frontIsClear()) { karel.move(); karel.pickThing();…. Hands On • Open Account.java and Bank.java. Leave Bank.java alone; modify Account.java to model a bank account for use by the bank. • Test your solution with the following commands: javac Bank.java Account.java java –ea Bank The –ea turns on assertions. They can be useful for checking (testing!) that things you know ought to be true really are true. • Suggestion: work incrementally. Do what you need to do to get the uncommented code working. Then work on getting the next assertion to pass, etc….

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