Using Java: Write a class called Triangle that can be used to represent a triangle. It should include the following methods:

 a) is_scalene (no two sides are the same length)

 b) is_isosceles (exactly two sides are the same length)

 c) is_equilateral (all three sides are the same length)

 d) calculatePerimeter (calculate the perimeter of the triangle)

Write a separate .java file with a main method to test the Triangle class.

Here is the Triangle class structure (Triangle.java):

Class Triangle {

 int side1;

 int side2;

 int side3;

 boolean isScalene() {

 }

 boolean isIsosceles() {

 }

 boolean isEquilateral() {

 }

 int calculatePerimeter(){

 }

}