j-j2me-9-3.shtml

这是一本介绍J2ME 编程的书籍,里面有具体的实现过程讲解,是很好的入门书籍

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  <td width="*" valign="bottom" align="right"><a border="0" href="../tutorial.zip"><img alt="下载教程 zip 文件" border="0" src="../i/icon-zip.gif" width="38" height="26"></a><a href=../tutorial_eng/index.shtml target=_blank><img alt="英文原文" border="0" src="../i/icon-source.gif" width="43" height="26"></a></td></tr><tr><td height="2" colspan="2"><img height="2" width="1" src="../i/c.gif"></td></tr></table><TABLE border="0" cellpadding="0" cellspacing="0" width="100%"><TR><TD width="150" height="1" bgcolor="#000000" colspan="6"><IMG alt="" height="1" width="150" src="../i/c.gif"></TD></TR><TR><TD background="../i/sw-gold.gif"><a border="0" href="index.shtml" onMouseOver="iOver('topmain'); iOver('bottommain'); self.status=mainblurb; return true;" onMouseOut="iOut('topmain'); iOut('bottommain'); self.status=''; return true;"><img alt="主菜单" border="0" src="../i/main.gif" name="topmain" width="77" height="15"></a></TD><TD background="../i/sw-gold.gif"><a border="0" onMouseOver="iOver('topsection'); iOver('bottomsection'); self.status=sectionblurb; return true;" onMouseOut="iOut('topsection'); iOut('bottomsection'); self.status=''; return true;" href="index9.shtml"><img alt="章节菜单" border="0" src="../i/section.gif" name="topsection" width="98" height="15"></a></TD><TD background="../i/sw-gold.gif"><a border="0" onMouseOver="iOver('topfeedback'); iOver('bottomfeedback'); self.status=feedbackblurb; return true;" onMouseOut="iOut('topfeedback'); iOut('bottomfeedback'); self.status=''; return true;" href="j-j2me-12-3.shtml"><img alt="给出此教程的反馈意见" border="0" src="../i/feedback.gif" name="topfeedback" width="80" height="15"></a></TD><TD width="100%" background="../i/sw-gold.gif"><img src="../i/c.gif" width="1" height="1"></TD><TD background="../i/sw-gold.gif"><a border="0" onMouseOver="iOver('topprevious'); iOver('bottomprevious'); self.status=previousblurb; return true;" onMouseOut="iOut('topprevious'); iOut('bottomprevious'); self.status=''; return true;" href="j-j2me-9-2.shtml"><img alt="上一屏" border="0" src="../i/previous.gif" name="topprevious" width="77" height="15"></a></TD><TD background="../i/sw-gold.gif"><a border="0" onMouseOver="iOver('topnext'); iOver('bottomnext'); self.status=nextblurb; return true;" onMouseOut="iOut('topnext'); iOut('bottomnext'); self.status=''; return true;" href="j-j2me-9-4.shtml"><img alt="下一屏" border="0" src="../i/next.gif" name="topnext" width="60" height="15"></a></TD></TR></TABLE><table bgcolor="ffffff" cellspacing="0" cellpadding="2" border="0" height="400" width="100%"><tr valign="bottom"><a name="navskip"></a><td height="25" colspan="4"><img border="0" height="25" width="562" src="imagemaster/titlebar9.jpg" alt="第九章：使用 KJava 事件处理的开发"></td></tr><tr><td bgcolor="ffffff" width="15">&nbsp;</td><td bgcolor="ffffff" width="12">&nbsp;</td><td valign="top" align="left" bgcolor="ffffff" width="*"><p><br x="7"><table cellspacing="0" cellpadding="0" border="0"><tr><td width="90%"><b><font size="4" face="Verdana, Arial, Helvetica">处理键盘输入，电子束定向发送／接收，以及未知事件</font></b></td><td width="200" align="right"><nobr><font size="1" face="Verdana, Arial, Helvetica">第 3 页（共 6 页）</font></nobr></td></tr></table><br x="7"><br x="7"><p><font size="2"> 
        在 J2SE AWT 中，接口  
        <code style="font-family: Courier New, Courier, monospace; font-size: 12">java.awt.event.KeyListener</code>   
        包含处理不同键盘事件的 <code style="font-family: Courier New, Courier, monospace; font-size: 12">keyPressed</code>、<code style="font-family: Courier New, Courier, monospace; font-size: 12">keyReleased</code> 和 <code style="font-family: Courier New, Courier, monospace; font-size: 12">keyTyped</code>。与此相比，KJava  
        则只有一个函数，<code style="font-family: Courier New, Courier, monospace; font-size: 12">keyDown()</code>。</p><p> 
        如果用户在可书画区写下一个字符，按下计算器或菜单图标，或者是按下任何“硬键”（缺省情况下，Date  
        Book、Address、page  
        up、page  
        down、To Do  
        List 或是  
        Memo Pad key ）时，事件 <code style="font-family: Courier New, Courier, monospace; font-size: 12">keyDown</code> 就会被调用。参数 <code style="font-family: Courier New, Courier, monospace; font-size: 12">keyCode  
        </code> 标识用户输入的键的代码。如果按了其中一个“硬键”，事件  
        <code style="font-family: Courier New, Courier, monospace; font-size: 12">keyDown</code>   
        就开始匹配这个类中定义过的相应常量中的一个。</p><p><code style="font-family: Courier New, Courier, monospace; font-size: 12">public void keyDown( int keyCode )</code></p><p><code style="font-family: Courier New, Courier, monospace; font-size: 12"> 
        beamReceive()</code>  
        方法被用于接收从红外线 Palm 设备传来的数据包。数据以一种字节数组的方式被接收，并用虚拟机自动分配这些数据</code>。</p><p><code style="font-family: Courier New, Courier, monospace; font-size: 12">public static boolean beamReceive( byte[] data )</code></p><p><code style="font-family: Courier New, Courier, monospace; font-size: 12">beamSend()</code>   
        方法不是一个事件处理程序，但是它显然与  
        <code style="font-family: Courier New, Courier, monospace; font-size: 12">beamReceive()  
        </code> 相关联，所以我们在这儿还是要提一下。这种方法被用来给发送到另一个红外线 Palm 设备的数据包定向。在给数据定向时，您可以调用这个函数，但是目标设备必须在接收数据的  
         spotlet 中注册一个
        <code style="font-family: Courier New, Courier, monospace; font-size: 12">beamReceive  
        </code>处理器。</font></p><p><code style="font-family: Courier New, Courier, monospace; font-size: 12">public static boolean beamSend( byte[] data )</code></p><p><code style="font-family: Courier New, Courier, monospace; font-size: 12">unknownEvent</code>   
        是一个常规的所有未知事件处理例程。</font></p><font size="2" face="Verdana, Arial, Helvetica"><p><code style="font-family: Courier New, Courier, monospace; font-size: 12">public void unknownEvent( int event, java.io.DataInput in )</code></p><br x="7"></font></td></tr></table><TABLE border="0" cellpadding="0" cellspacing="0" width="100%"><TR><TD background="../i/sw-gold.gif"><a border="0" href="index.shtml" onMouseOver="iOver('topmain'); iOver('bottommain'); self.status=mainblurb; return true;" onMouseOut="iOut('topmain'); iOut('bottommain'); self.status=''; return true;"><img alt="主菜单" border="0" src="../i/main.gif" name="bottommain" width="77" height="15"></a></TD><TD background="../i/sw-gold.gif"><a border="0" onMouseOver="iOver('topsection'); iOver('bottomsection'); self.status=sectionblurb; return true;" onMouseOut="iOut('topsection'); iOut('bottomsection'); self.status=''; return true;" href="index9.shtml"><img alt="章节菜单" border="0" src="../i/section.gif" name="bottomsection" width="98" height="15"></a></TD><TD background="../i/sw-gold.gif"><a border="0" onMouseOver="iOver('topfeedback'); iOver('bottomfeedback'); self.status=feedbackblurb; return true;" onMouseOut="iOut('topfeedback'); iOut('bottomfeedback'); self.status=''; return true;" href="j-j2me-12-3.shtml"><img alt="给出此教程的反馈意见" border="0" src="../i/feedback.gif" name="bottomfeedback" width="80" height="15"></a></TD><TD width="100%" background="../i/sw-gold.gif"><img src="../i/c.gif" width="1" height="1"></TD><TD background="../i/sw-gold.gif"><a border="0" onMouseOver="iOver('topprevious'); iOver('bottomprevious'); self.status=previousblurb; return true;" onMouseOut="iOut('topprevious'); iOut('bottomprevious'); self.status=''; return true;" href="j-j2me-9-2.shtml"><img alt="上一屏" border="0" src="../i/previous.gif" name="bottomprevious" width="77" height="15"></a></TD><TD background="../i/sw-gold.gif"><a border="0" onMouseOver="iOver('topnext'); iOver('bottomnext'); self.status=nextblurb; return true;" onMouseOut="iOut('topnext'); iOut('bottomnext'); self.status=''; return true;" href="j-j2me-9-4.shtml"><img alt="下一屏" border="0" src="../i/next.gif" name="bottomnext" width="60" height="15"></a></TD></TR><TR><TD width="150" height="1" bgcolor="#000000" colspan="6"><IMG alt="" height="1" width="150" src="../i/c.gif"></TD></TR></TABLE><!--#include virtual="/developerWorks/inc/tuto-inc/tuto-footer.inc" --></body></html>