Display course and appropriate message Program plan: Filename: “CourseException.java” Define “CourseException” class which extends from “Exception” class Define the constructor Call the super method. Filename: “Course.java” Define the “Course” class Declare the required variables and set the values Define the default constructor Set the values Define the parameterized constructor Set the values Check the length of the department Append the string to the “msg” variable Check the “num” value is less than “LOW_NUM” or greater than “HIGH_NUM” Append the string to the “msg” variable Check “msg” is not equal to empty string. Throw an exception. Define “toString” method Return the value Filename: “ThrowCourseException.java” Define the class “ThrowCourseException” Define the “main” method Create an object for “Course” class Declare the variables and set the required values to the variables Iterate “for” loop until it reaches length of the “course” Set the values to the object Iterate “for” loop until it reaches length of the “course” In “try” block, set the values In “catch” block, display the course and error Display the course values

Question

Change the following code so that there is always at least one way to get from the left corner to the top right, but the labyrinth is still randomized. The player starts at the bottom left corner of the labyrinth. He has to get to the top right corner of the labyrinth as fast he can, avoiding a meeting with the evil dragon. Take care that the player and the dragon cannot start off on walls. Also the dragon starts off from a randomly chosen position public class Labyrinth { private final int size; private final Cell[][] grid; public Labyrinth(int size) { this.size = size; this.grid = new Cell[size][size]; generateLabyrinth(); } private void generateLabyrinth() { Random rand = new Random(); for (int i = 0; i < size; i++) { for (int j = 0; j < size; j++) { // Randomly create walls and paths grid[i][j] = new Cell(rand.nextBoolean()); } } // Ensure start and end are…

Answer 1

Question

Chapter 12, Problem 6PE

Program Plan Intro

Display course and appropriate message

Program plan:

Filename: “CourseException.java”

Define “CourseException” class which extends from “Exception” class

Define the constructor

Call the super method.

Filename: “Course.java”

Define the “Course” class

Declare the required variables and set the values

Define the default constructor

Set the values

Define the parameterized constructor

Set the values

Check the length of the department

Append the string to the “msg” variable

Check the “num” value is less than “LOW_NUM” or greater than “HIGH_NUM”

Append the string to the “msg” variable

Check “msg” is not equal to empty string.

Throw an exception.

Define “toString” method

Return the value

Filename: “ThrowCourseException.java”

Define the class “ThrowCourseException”

Define the “main” method

Create an object for “Course” class

Declare the variables and set the required values to the variables

Iterate “for” loop until it reaches length of the “course”

Set the values to the object

Iterate “for” loop until it reaches length of the “course”

In “try” block, set the values

In “catch” block, display the course and error

Display the course values

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