exercises.html

JSP中文介绍,对于菜鸟有用

<P>
<LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">What does this code segment do?

<PRE>
Font f=new Font(&quot;Times&quot;, Font.BOLD, 24);
AttributedString ats=new AttributedString(&quot;Magic&quot;);
ats.addAttribute(TextAttribute.FONT, f);
ats.addAttribute(TextAttribute.UNDERLINE, 
		TextAttribute.UNDERLINE_ON);
AttributedCharacterIterator iter=ats.getIterator();

FontRenderContext frc=g2.getFontRenderContext();
tl=new TextLayout(iter, frc);
g2.setColor(Color.red);
tl.draw(g2, (float)30, (float)50); 
</PRE>

<BR>
<INPUT NAME="TWOB" TYPE="RADIO" VALUE="A"> A. Draws a text layout
with font and underline attributes.<BR>
<INPUT NAME="TWOB" TYPE="RADIO" VALUE="B"> B. Sets an underline
attribute on the graphics context.<BR> 
<INPUT NAME="TWOB" TYPE="RADIO" VALUE="C"> C. Draws a text layout
with no attributes.<BR>
<INPUT NAME="TWOB" TYPE="RADIO" VALUE="D"> D. Sets an underline
attribute on the font.</FONT>
</OL>
<UL><INPUT TYPE="SUBMIT" VALUE="Submit">
<INPUT TYPE="RESET">
</UL>
</FORM>

Go to:<BR>
<A HREF="style.html">Lesson 2: Drawing Styled Text</A><BR>
<A HREF="more.html">Lesson 3: Interacting with Styled Text</A>

<A NAME="three"></A>
<H3>Exercise 3: Interacting with Styled Text</H3>

<FORM METHOD="POST" ACTION="/cgi-bin/les3.pl">
<INPUT TYPE=HIDDEN NAME="tut" VALUE="les3">

<OL>
<LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">How do you calculate the current insertion point moving right?
<BR>
<INPUT NAME="THREEA" TYPE="RADIO" VALUE="A"> A. By starting with a <CODE>TextHitInfo</CODE>
object that represents the current insertion point, and calling
<CODE>TextLayout.getCaretShapes</CODE> when the right arrow key is pressed. <P>
<INPUT NAME="THREEA" TYPE="RADIO" VALUE="B"> B. By starting with a <CODE>TextHitInfo</CODE>
object that represents the current insertion point, and calling
<CODE>TextLayout.getHitTestChar</CODE> when the right arrow key is pressed.<P>
<INPUT NAME="THREEA" TYPE="RADIO" VALUE="C"> C. By starting with a <CODE>TextHitInfo</CODE>
object that represents the current insertion point, and calling
<CODE>TextLayout.getNextLeftHit</CODE> when the right arrow key is pressed.<P>
<INPUT NAME="THREEA" TYPE="RADIO" VALUE="D"> D. By starting with a <CODE>TextHitInfo</CODE>
object that represents the current insertion point, and calling
<CODE>TextLayout.getNextRightHit</CODE> when the right arrow key is pressed.</FONT>
<P>
<LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">What is the best way to draw the highlight region for selected text?
<BR>
<INPUT NAME="THREEB" TYPE="RADIO" VALUE="A"> A. Draw the highlight region first
and draw the text over it.<BR>
<INPUT NAME="THREEB" TYPE="RADIO" VALUE="B"> B. Draw the text first and draw the
highlight region over it.<BR>
<INPUT NAME="THREEB" TYPE="RADIO" VALUE="C"> C. It does not matter.<BR>
<INPUT NAME="THREEB" TYPE="RADIO" VALUE="D"> D. Draw the lighter color first, and
put the darker color over it. </FONT>
</OL>
<UL><INPUT TYPE="SUBMIT" VALUE="Submit">
<INPUT TYPE="RESET">
</UL>
</FORM>

Go to:<BR>
<A HREF="more.html">Lesson 3: Interacting with Styled Text</A><BR>
<A HREF="int.html">Lesson 4: Foreign Language Support</A>

<A NAME="four"></A>
<H3>Exercise 4: Foreign Language Support</H3>

<FORM METHOD="POST" ACTION="/cgi-bin/les4.pl">
<INPUT TYPE=HIDDEN NAME="tut" VALUE="les4">

<OL>
<LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">What is bidirectional text?
<BR>
<INPUT NAME="FOURA" TYPE="RADIO" VALUE="A"> A. Text that runs right-to-left. <BR>
<INPUT NAME="FOURA" TYPE="RADIO" VALUE="B"> B. French.<BR>
<INPUT NAME="FOURA" TYPE="RADIO" VALUE="C"> C. Sanskrit.<BR>
<INPUT NAME="FOURA" TYPE="RADIO" VALUE="D"> D. Text that includes right-to-left
and left-to-right text. </FONT>
<P>
<LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Which statement about bidirectional text is true?
<BR>
<INPUT NAME="FOURB" TYPE="RADIO" VALUE="A"> A. A <CODE>TextLayout</CODE>
object needs extra code to draw bidirectional text.<BR>
<INPUT NAME="FOURB" TYPE="RADIO" VALUE="B"> B. The <CODE>TextHitInfo</CODE>
object cannot determine the location of a user click without the help of
the <CODE>TextLayout.CaretPolicy</CODE> class.<BR>
<INPUT NAME="FOURB" TYPE="RADIO" VALUE="C"> C. The source text does not map
one-to-one to the displayed text.<BR>
<INPUT NAME="FOURB" TYPE="RADIO" VALUE="D"> D. When the end user presses an
Arrow key, the caret moves in the opposite direction on the display.</FONT>
</OL>
<UL><INPUT TYPE="SUBMIT" VALUE="Submit">
<INPUT TYPE="RESET">
</UL>
</FORM>

Go to:<BR>
<A HREF="int.html">Lesson 4: Foreign Language Support</A><BR>
<A HREF="other.html">Lesson 5: Other Methods</A>


<A NAME="five"></A>
<H3>Exercise 5: Other Methods</H3>

<FORM METHOD="POST" ACTION="/cgi-bin/les5.pl">
<INPUT TYPE=HIDDEN NAME="tut" VALUE="les5">

<OL>
<LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">A <CODE>TextLayout</CODE> object currently uses what type of baseline?
<BR>
<INPUT NAME="FIVEA" TYPE="RADIO" VALUE="A"> A. Centered.<BR>
<INPUT NAME="FIVEA" TYPE="RADIO" VALUE="B"> B. Hanging.<BR>
<INPUT NAME="FIVEA" TYPE="RADIO" VALUE="C"> C. Roman.<BR>
<INPUT NAME="FIVEA" TYPE="RADIO" VALUE="D"> D. Centered Roman. </FONT>
<P>
<LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">What is the advance of a <CODE>TextLayout</CODE>? 
<BR>
<INPUT NAME="FIVEB" TYPE="RADIO" VALUE="A"> A. The amount of
white space at the beginning of the string.<BR>
<INPUT NAME="FIVEB" TYPE="RADIO" VALUE="B"> B. The amount of white
space at the end of the string.<BR>
<INPUT NAME="FIVEB" TYPE="RADIO" VALUE="C"> C. The space before 
a directional boundary.<BR>
<INPUT NAME="FIVEB" TYPE="RADIO" VALUE="D"> D. The length of the
<CODE>TextLayout</CODE> object. </FONT>
</OL>
<UL><INPUT TYPE="SUBMIT" VALUE="Submit">
<INPUT TYPE="RESET">
</UL>
</FORM>

Go to:<BR>
<A HREF="other.html">Lesson 5: Other Methods</A>

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