Define a function that acts like a statement just as you would a function that acts like an expression, with two exceptions.
The return type is void.
You do not need to include a return statement. If you want to, you can write
return;
to exit the function immediately.
//=========================================
// printGreeting(name) prints a greeting to
// someone called name.
//=========================================
public static void printGreeting(String name)
{
System.out.println("Hello, "
+ name
+ ", how are you?");
}