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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">Open
a text file so that you can read the file one line at a time. Read each line as
a
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>String
</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">and
place that
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>String
</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">object
into a
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Vector</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">.
Print out all of the lines in the
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Vector</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
in reverse order.
</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black"> </FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">Modify
Exercise 1 so that the name of the file you read is provided as a command-line
argument.
</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black"> </FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">Modify
Exercise 2 to also open a text file so you can write text into it. Write the
lines in the
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Vector</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">,
along with line numbers, out to the file.
</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black"> </FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">Modify
Exercise 2 to force all the lines in the
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Vector</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
to upper case and send the results to
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>System.out</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">.</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black"> </FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">Modify
Exercise 2 to take additional arguments of words to find in the file. Print out
any lines in which the words match.
</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black"> </FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">In
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Blips.java</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">,
copy the file and rename it to
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>BlipCheck.java
</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">and
rename the class
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Blip2</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
to
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>BlipCheck
</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">(making
it
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>public</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
in the process). Remove the
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>//!</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
marks in the file and execute the program including the offending lines. Next,
comment out the default constructor for
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>BlipCheck</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">.
Run it and explain why it works.
</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black"> </FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">In
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Blip3.java</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">,
comment out the two lines after the phrases “You must do this:” and
run the program. Explain the result and why it differs from when the two lines
are in the program.
</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black"> </FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">Convert
the
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>SortedWordCount.java</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
program to use the Java 1.
</FONT></OL><DIV ALIGN=LEFT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">1<A NAME="Index1352"></A>
IO Streams.
</FONT><P></DIV>
<OL>
<LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black"> </FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">Repair
the program
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>CADState.java</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
as described in the text.
</FONT><LI><FONT FACE="Carmina Md BT" SIZE=5 COLOR="Black"> </FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">(Intermediate)
In Chapter 7, locate the
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>GreenhouseControls.java</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
example, which consists of three files. In
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>GreenhouseControls.java</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">,
the
</FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black"><B>Restart( )</B></FONT><FONT FACE="Carmina Md BT" SIZE=3 COLOR="Black">
inner class has a hard-coded set of events. Change the program so that it reads
the events and their relative times from a text file. (Challenging: Use a
factory method from Chapter 16 to build the events.)
</FONT></OL><DIV ALIGN=LEFT><FONT FACE="Da Vinci Extras" SIZE=39 COLOR="Black">9</FONT><a name="Chapter_12"></a><a name="_Toc375545404"></a><a name="_Toc407441455"></a><a name="_Toc408018644"></a><P></DIV>
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