PLEASE HELP ASAP

Part #1: Written Exercises (0 pts)

None

Part #2 - Programming (20 pts)

Your assignment is to write a class definition (not a program, there is no main method) named Triangle (saved in a file Triangle.java). A Triangle has 3 instance variables:

int side1, side2, side3; The class Triangle must include the following constructors and methods: (If your class does not contain

any of the following methods, points will be deducted).

public Triangle (int s1, int s2, int s3) - Sets up a triangle with the specified side lengths.

private int largest() - Returns the length of the longest side of the triangle. This is a helper method.

1

private int shortest() Returns the length of the shortest side of the triangle. This is a helper method.

public boolean is_equilateral() - Determines whether a triangle is equilateral. If the longest side is equal to the shortest side, then the triangle is equilateral.

public boolean is_isosceles() - Determines whether a triangle is isosceles. Any (and at least) two sides must be equal.

public boolean is_scalene() - Determines whether a triangle is scalene. No two sides are equal.

public String toString() - Prints the sides of the triangle.

Save the Triangle class in a file called Triangle.java and use the following program stored in Assignment4.java which has the main method to create a new Triangle object and to test what kind of Triangle it is. A sample output is shown below.

Important

Your class should have exactly the method headers that are described or otherwise your class will not work with the test driver program (Assignment4.java) that is provided. You should never change the test driver program if the test driver is provided but instead make changes to Triangle class to make it work.

Helpful Hints

Work on it in steps - write one method, test it with a test driver and make sure it works before going on to the next method.

Always make sure your code compiles before you add another method.

Your methods should be able to be called in any order.

Triangle equal = new Triangle (6, 6, 6); //example of equilateral (and isosceles) triangle Triangle isosceles = new Triangle (3, 7, 7); // example of isosceles triangle Triangle scalene = new Triangle (4, 5, 6); // example of scalene triangle 

Sample Outputs

Sample 1: Enter the sides of the triangle: 345 3 4 5 triangle: It is not isosceles It is not a equilateral It is scalene

Check another Triangle (y/n)? y Enter the sides of the triangle: 456 4 5 6 triangle:

It is not isosceles It is not a equilateral It is scalene

Check another Triangle (y/n)? y Enter the sides of the triangle: 444

2

4 4 4 triangle: It is isosceles It is equilateral It is not scalene

Check another Triangle (y/n)? y Enter the sides of the triangle: 377 3 7 7 triangle:

It is isosceles It is not a equilateral It is not scalene

Check another Triangle (y/n)? n Press any key to continue . . .

Driver:

/*------------------------------------------------------------------------- /*------------------------------------------------------------------------- // AUTHOR: your name // FILENAME: title of the source file // SPECIFICATION: description of the program // TIME SPENT: how long it took you to complete the assignment //----------------------------------------------------------------------*/ import java.util.Scanner; public class Assignment4 { //=========================================================== // Create and determine properties of various triangles. //=========================================================== public static void main (String[] args) { Scanner console = new Scanner(System.in); int num1, num2, num3; String another; // repeat until the user enter 'n' do { // get the input System.out.println("Enter the sides of the triangle: "); num1 = console.nextInt(); num2 = console.nextInt(); num3 = console.nextInt(); // create the Triangle Triangle myTriangle = new Triangle (num1, num2, num3); // print the Triangle System.out.println(myTriangle.toString() + " triangle:"); //check the isosceles if (myTriangle.is_isosceles()) System.out.println("\tIt is isosceles"); else System.out.println("\tIt is not isosceles"); //check the equilateral if (myTriangle.is_equilateral()) System.out.println("\tIt is equilateral"); else System.out.println("\tIt is not a equilateral"); //check the scalene if (myTriangle.is_scalene()) System.out.println("\tIt is scalene"); else System.out.println("\tIt is not scalene"); // find if the user want to repeat System.out.println(); System.out.print("Check another Triangle (y/n)? "); another = console.next(); } while (another.equalsIgnoreCase("y")); } // method main } // class Assignment4