Surname 1 1 Define a Java class that will represent a triangle. First create the UML class diagram for the Triangle class as described here. In the class, declare 3 private instance variables (doubles) for the 3 sides, with default values of 1. Also, define the following public instance methods: • constructor with 3 double parameters (call the mutator described next) • 1 public mutator (set) method for the 3 sides (so it must have 3 double parameters), but unlike the Circle class, make sure each of the parameters is > 0 AND the sum of 2 sides > the other (i.e., make sure a+b>c and a+c>b and b+c>a), and if so, assign a parameter to its corresponding instance variable • 3 accessor methods, one for each of the 3 sides (each will return one double) • a method that calculates and returns the perimeter of the triangle (double) • a method that calculates and returns the area of the triangle (double) using Heron's formula shown in Lesson 5 (page 5.6). Before you could test this, read Lesson 5, page 5.7 first (not required to run this for the exercise, you will be required to in the next exercise). UPLOAD the UML class diagram (as a Word doc or PDF or picture and the Triangle class. 2 Write main (may be in the same or separate class from the Triangle class) to test the Triangle class that you wrote, if correct, or the posted answer for Exercise 5.1. Instantiate at least 2 Triangle objects, assigning them to Triangle variables in main. Call at least 2 of the instance methods for EACH of the Triangle objects, displaying the results. Run this, copy and paste the output (commented out) after the end of this program. Surname 2 3 Write a class called Customer which has private instance variables for a name, account number and SavingsAccount (see SavingsAccount class link). Include a constructor with a String, long, and double parameters which instantiates a SavingsAccount using the double parameter. Also include accessors for each instance variable and a mutator for the name only. You MUST also write the UML class diagram for this class.
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