Using the listing 13.7 ( page 495 ) and listing 13.8 ( page 497 ) as your starting point, create a GUI message panel that uses 4 different fonts , colors and styles ( bold ect ) with messages of your choice. Note, for this exercise, use a single java source file for both classes and the main test code . Use Visual Paradigm to create the class diagram by tools->code engineering->Java Round-trip-> import