Design a triangle to have three variables to store the length of each side of the traingle. your class must include all the necessary methods:

-Constructor(default, parenthesized:values of 3 sides are passed to it), and copy constructors

-getters

-setters

-toString

-calcArea

-calcPerimeter

write a test class named TestTriangle to declare an Arraylist to store objects of type Traingle, use a loop to read data for 5 Traingles and if they are not the same stire them in the ArrayList. Then print the content of the list to the monitor. Make a deep copy of the one of the first Triangle in the list, and modify a side and print it to the monitor.