1. Provide JUnit test class TaxReturnTest with three test methods that test different tax situations for the TaxReturn class in Chapter 5.
2. Write methods
that show the letters H, E, L, O on the graphics window, where the point p is the top-left corner of the letter. Then call the methods to draw the words "HELLO" and "HOLE" on the graphics display. Draw lines and ellipses. Do not use the drawString method. Do not use System.out.