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 a triangle.

A no-arg constructor that creates a default triangle.

A constructor that creates a triangle with the specified side1, side2, and side3.

The accessor methods (getter methods) for all three data fields.

A method named getArea() that returns the area of this triangle. (see below for the formula)

A method named getPerimeter() that returns the perimeter of this triangle.

A method named getName() that returns a string description for the triangle.

The getName() method is implemented as follows:

return Triangle: side1 = + side1 + side2 = + side2 + side3 = + side3;

The formula for computing the area of a triangle is:

s = (side1 + side2 + side3) / 2;

area = Math.sqrt(s * (s - side1) * (s - side2) * (s - side3));

Create a user-defined exception class and modify Triangle class: IllegalTriangleException and TriangleWithException classes (20 pts)

Defined the TriangleWithException class from the Triangle class (you just create from the above) with three sides. In this class, the sum of any sides is greater than the other side. The TriangleWithException class must adhere to this rule.

Create the IllegalTriangleException class, and modify the constructor of the TriangleWithException class to throw an IllegalTriangleException object if a TriangleWithException is created with sides that violate the rule, as follows:

public TriangleWithException(double side1, double side2, double side3

throws IllegalTriangleException { //implement it }

Write a Driver class TriangleExceptionTest in the separate file to test your TriangleWithException class.

You will create two TriangleWithException objects: (5 pts)

TriangleWithException t1 = new TriangleWithException(1.5, 2, 3);

TriangleWithException t2 = new TriangleWithException(1, 2, 3);

The result is similar to the following figure:

Perimeter for t1: 6.5

Area for t1: 1.3331705629813464

Illegal triangle

Side1: 1.0

Side2: 2.0

Side3: 3.0

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