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<a href="http://www.bruceeckel.com/javabook.html">Bruce Eckel's Thinking in Java</a>
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<H2 ALIGN=LEFT>
Exercises</H2>
<OL>
<LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black">	</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">Create
a class 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>myString</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
containing a 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>String</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
object that you initialize in the constructor using the constructor&#8217;s
argument. Add a 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>toString(
)
</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
method and a method 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>concatenate(
)
</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
that appends a 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>String</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
object to your internal string. Implement 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>clone(
)
</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
in 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>myString</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">.
Create two 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>static</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
methods that each take a 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>myString
x
</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
handle as an argument and call 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>x.concatenate(&#8220;test&#8221;)</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">,
but in the second method call 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>clone(
)
</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
first. Test the two methods and show the different effects.
</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black">	</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">Create
a class called 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Battery</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
containing an 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>int</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
that is a battery number (as a unique identifier). Make it cloneable and give
it a 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>toString(&#160;)</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
method. Now create a class called 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Toy</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
that contains an array of 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Battery</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
and a 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>toString(&#160;)</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
that prints out all the batteries. Write a 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>clone(&#160;)</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
for 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Toy</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
that automatically clones all of its 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Battery</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
objects. Test this by cloning 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Toy</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
and printing the result.
</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black">	</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">Change
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>CheckCloneable.java</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
so that all of the 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>clone(&#160;)</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
methods catch the 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>CloneNotSupportedException</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
rather than passing it to the caller.
</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black">	</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">Modify
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Compete.java</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
to add more member objects to classes 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Thing2</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
and 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Thing4</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
and see if you can determine how the timings vary with complexity &#8211;
whether it&#8217;s a simple linear relationship or if it seems more complicated.
</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black">	</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">Starting
with 
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Snake.java</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">,
create a deep-copy version of the snake.
</FONT></OL><DIV ALIGN=LEFT><FONT FACE="Da Vinci Extras" SIZE=39 COLOR="Black">4</FONT><a name="Chapter_15"></a><a name="_Toc375545444"></a><a name="_Toc407441457"></a><a name="_Toc408018677"></a><P></DIV>

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