Question 3: Problem Description: Design a class named Triangle that extends GeometricObject. The class contains: Three double data fields named side1, side2, and side3 with default values 1.0 to denote three sides of the triangle. A constructor that creates a triangle with the specified side1, side2, and side3. The get and set methods for all three data fields. A method named getArea() that returns the area of this triangle. A method named getPerimeter() that returns the perimeter of this triangle. A method named toString() that returns a string description for the triangle. The toString() method is implemented as follows: return "Triangle: side1 = " + side1 + " side2 = " + side2 + " side3 = " + side3; Coding: public class Assignment1 { public static void main(String[] args) { Triangle triangle = new Triangle(1, 1.5, 1); triangle.setColor("yellow"); triangle.setFilled(true); System.out.println(triangle); System.out.println("The area is " + triangle.getArea()); System.out.println("The perimeter is " + triangle.getPerimeter()); System.out.println(triangle); } } public abstract class GeometricObject { private String color = "white"; private boolean filled; private java.util.Date dateCreated; 3 of 4 /** Construct a default geometric object */ protected GeometricObject() { dateCreated = new java.util.Date(); } /** Construct a geometric object with color and filled value */ protected GeometricObject(String color, boolean filled) { dateCreated = new java.util.Date(); this.color = color; this.filled = filled; } /** Return color */ public String getColor() { return color; } /** Set a new color */ public void setColor(String color) { this.color = color; } /** Return filled. Since filled is boolean, * the get method is named isFilled */ public boolean isFilled() { return filled; } /** Set a new filled */ public void setFilled(boolean filled) { this.filled = filled; } /** Get dateCreated */ public java.util.Date getDateCreated() { return dateCreated; } @Override public String toString() { return "created on " + dateCreated + " color: " + color + " and filled: " + filled; } /** Abstract method getArea */ public abstract double getArea(); /** Abstract method getPerimeter */ public abstract double getPerimeter(); } class Triangle extends GeometricObject { // Implement it } 4 of 4 Submit the following items: 1. Implement the class Triangle. 2. Run the test program that creates a Triangle object with sides 1, 1.5, 1, colour yellow and filled true, and displays the area, perimeter, colour, and whether filled or not. 3. Compile, Run, and take a screenshot of the output and submit to Blackboard (you must submit the program regardless whether it complete or incomplete, correct or incorrect).