Question

Homework: Java AU Naturel
Exercise 4.2: Draw a UML class diagram for listing 4.2 on page 4 of the book. Code for the diagram is in comments. Please help if you can.

Answer 1

Code:
import javax.swing.JOptionPane;
class NameChange
{
/** Ask the user for his/her first name, then for the last
* name, then print them out in the opposite order. */
public static void main (String[ ] args)
{ JOptionPane.showMessageDialog (null,
"Illustrate the use of JOptionPane methods");
String firstName = JOptionPane.showInputDialog
("What is your first name?");
String lastName = JOptionPane.showInputDialog
("What is your last name?");
JOptionPane.showMessageDialog (null,
"Reversed it is " + lastName + ", " + firstName);
System.exit (0); // needed when using JOptionPane
} //======================
}

Answer 2

What troubles you? Your book should also list the format of a java uml diagram.

Answer 3

They have an example, but its lousy and my teacher said its for the previous chapter. and this chapter 4 has different info. She was confusing.

Answer 4

I am confused on where the System goes in the diagram. I started it slowly.