At the same time they are learning the core of an important modern programming language and the core concepts of the object-oriented programming paradigm. Instead of using many many language features to solve problems, students must apply a few simple tools in combination to solve some hard problems. While not convenient for many tasks, it is theoretically possible to solve any computer programming problem in this simple language. Robot is a Turing complete language that can be mastered in a few weeks.

This version goes beyond the earlier Karel++ to put more emphasis on polymorphism, the primary distinction between procedural programming and object-oriented programming. The programmer uses his or her problem solving skills on both parts of this task. The second is providing a description of the task for the robots to perform. The first part is defining the capabilities of the robots that are needed. The programming task is divided into two parts. There can be one or several robots assigned to a task.

Here, the objects are robots that exist in a simple world. In object-oriented programming, a computation is carried out by a set of interacting objects. Where the original used a syntax and methodology derived from Pascal, the present text is based closely on Java. This book maintains the simplicity of the original and yet provides instruction that is thoroughly object-oriented from the beginning. Robot updates Karel the Robot and even Karel ++ to provide a means of introducing novice programmers to object-oriented programming (OOP). However, the object-orientedprogramming paradigm has begun to dominate the world of commercialsoftware production. However, the concepts of Karel are still as vibrant andvalid an introduction to the programming and problem-solving processesas they were when first introduced.

Pascal no longer enjoys the popularity it did inthe 1980s. Today there are newprogramming languages, new programming paradigms, and new and morepowerful computers. The programming landscape has changed significantly since the initialpublication of Karel the Robot in 1981. A Gentle Introduction to the Art of Object-Oriented Programming in Java

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