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<TITLE>SL275: Module3: Exercise #2: Create Customer Accounts</TITLE>
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<H2>SL275: Module3: Identifiers, Keywords, and Types</H2>
<H3>Exercise #2: Create Customer Accounts</H3>
<H3>(level 2)</H3>
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<H3>Objective</H3>
<P>
In this exercise you will expand the Banking project by adding a
<TT>Customer</TT> class. A customer will contain one <TT>Account</TT> object.
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<TD> <IMG SRC="UML.gif" BORDER=0 ALT="The UML Diagram of the Customer Class" WIDTH=614 HEIGHT=237> </TD>
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Note: please refer to Appendix G <I>UML Modeling in Java</I> to help
understand this UML diagram. For example, the <TT>account</TT> relationship
can be implemented as a data attribute in the <TT>Customer</TT> class;
eventhough, it is not mentioned in the "attributes" section of
the <TT>Customer</TT> class block.
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<H3>Directions</H3>
<P>
Start by changing your working directory to <TT>SL275/mod03/exercise2</TT> on your computer.
<OL>
<LI>Make the <TT>banking</TT> directory.
<P>
<LI>Copy the Banking project files from
the previous Banking lab to this directory. Use a command such as:
<PRE>
cp ../../mod02/exercise3/banking/*.java banking/
</PRE>
<P>
<LI>Create the <TT>Customer</TT> class in the file <TT>Customer.java</TT>
under the <TT>banking</TT> directory. This directory represents the
Java package structure for your program. This class must implement
the model in the above UML diagram.
<OL>
<LI>declare three private object attributes: <TT>firstName</TT>, <TT>lastName</TT>, and
<TT>account</TT>
<LI>declare a public constructor that takes two parameters (<TT>f</TT> and <TT>l</TT>)
that populate the object attributes
<LI>declare two public accessors for the object attributes; these methods
<TT>getFirstName</TT> and <TT>getLastName</TT> simply return the appropriate attribute
<LI>declare the <TT>setAccount</TT> method to assign the <TT>account</TT> attribute
<LI>declare the <TT>account</TT> method to retrieve the <TT>account</TT> attribute
</OL>
<P>
<TT></TT>
<LI>In the main <TT>exercise2</TT> directory, compile and run the <TT>TestBanking</TT> program.
You shoud see the following output:
<PRE>
Creating the customer Jane Smith.
Creating her account with a 500.00 balance.
Withdraw 150.00
Deposit 22.50
Withdraw 47.62
Customer [Smith, Jane] has a balance of 324.88
</PRE>
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