Chapter 8, Problem 26PE

Program Plan Intro

Implementation of class Robot

Program plan:

Filename: “Robot.java”

• Import the required packages.
• Define the “Robot” class.
  • Declare the class members.
  • Create a constructor “Robot()”.
    • Initialize the class members.
  • Create a method “turnLeft()”.
    • Decrement the value of “direction”.
    • If the value of “direction” is less than 0,
      • Set the value of “direction” equal to 3.
  • Create a method “turnRight ()”.
    • Increment the value of “direction”.
    • If the value of “direction” is greater than 3,
      • Set the value of “direction” equal to 0.
  • Create a method “ move()”.
    • If the value of “direction” is equal to 0,
      • Call the method “translate()”.
        • Else if the value of “direction” is equal to 1,
        • • Call the method “translate()”.
        • If the value of “direction” is equal to 2,
        • • Call the method “translate()”.
        • If the value of “direction” is equal to 3,
        • • Call the method “translate()”.
  • Create a method “ getLocation ()”.
    • Return the “location”.
  • Create a method“getDirection()”.
    • If the value of “direction” is equal to 1,
      • Return “E”.
        • If the value of “direction” is equal to 2,
        • • Return “S”.
        • If the value of “direction” is equal to 3,
        • • Return “W”.
        • Return the value of “N”.

Filename: “RobotTester.java”

• Import the required packages.
• Define the “RobotTester” class
• Define the main method.
  • Create an object for “Robot” class.
  • Call the method “move()”.
  • Call the method “turnRight()”.
  • Call the method “move()”.
  • Call the method “move()”.
  • Call the method “turnRight()”.
  • Call the method “move()”.
  • Call the method “move()”.
  • Call the method “turnLeft()”.
  • Call the method “move()”.
  • Create object of “Point”.