method Definition: No Parameters

In this problem, you will create a program that defines no-parameter methods (sayHello() and sayGoodbye()) in a Greeter class, calls them in order from Main class, and displays the result to standard output.

Learning Objective: Understand definition and invocation of methods without parameters

Overview

Create a program that defines and calls methods without parameters.

Specifications

• Create a Greeter class
• sayHello() method outputs "Hello, World!"
• sayGoodbye() method outputs "Goodbye!"
• Call both methods in Main class

Output Format

Hello, World!
Goodbye!