Write complete Java programs to complete the following tasks.

Q2: Custom exception class for triangle sides

For a triangle with three sides of length a,b,c to be valid,

the length of each side must be greater than 0, and

the sum of any two sides must be greater than the third side by length

Design a Triangle class that

extends the GeometricObject class below

class GeometricObject { private String color = "white"; private boolean filled; private java.util.Date dateCreated; public GeometricObject() { dateCreated = new java.util.Date(); } public GeometricObject(String color, boolean filled) { dateCreated = new java.util.Date(); this.color = color; this.filled = filled; } public String getColor() { return color; } public void setColor(String color) { this.color = color; } public boolean isFilled() { return filled; } public void setFilled(boolean filled) { this.filled = filled; } public java.util.Date getDateCreated() { return dateCreated; } public String toString() { return "created on " + dateCreated + " color: " + color + " and filled: " + filled; } }

add three sides a, b, c as private data fields with the following framework

 public class Triangle extends GeometricObject { private double a, b, c; public Triangle(double a, double b, double c) { // TODO: // if invalid throw InvalidTriangleException // else assign the tree sides respectively } }

Put the Triangle class and GeometricObject in the same file.

It is OK if you put them in different files.

Refer to example Circle

Design the custom exception class InvalidTriangleException

public class InvalidTriangleException extends RuntimeException { private double a, b, c; public InvalidTriangleException(){} public InvalidTriangleException(double a, double b, double c) { // TODO: // use keyword super to invoke the constructor of RuntimeException with an error message // set the three sides } // TODO: // complete three public getters }

Refer to example InvalidRadiusException

Design a test class to create three triangles to trigger the exception with the second triangle

Triangle(3,4,5); Triangle(1,2,3); Triangle(10,4,5);

Refer to example TestCircle

Test cases

InvalidTriangleException: Invalid triangle with sides: 1.0, 2.0, 3.0 Created triangle with sides: 3.0, 4.0, 5.0