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var emailAbstract="在本教程中，您將要使用 Java 2 平臺(tái)，Micro 版 (Java 2 Platform, Micro Edition, J2ME) -- Sun Microsystem 的 Java 2 平臺(tái)最新版本為手持計(jì)算機(jī)開(kāi)發(fā)一個(gè)基本繪圖應(yīng)用程序。我們將首先說(shuō)明 J2ME 的背景，研究 J2ME 配置和簡(jiǎn)表，然后指導(dǎo)您建立自己的開(kāi)發(fā)環(huán)境。 接著，我們將研究 K 虛擬機(jī) GUI 開(kāi)發(fā)，使用連接限制設(shè)備配置 (Connected Limited Device Configuration, CLDC) API 開(kāi)發(fā)一個(gè)基本繪圖應(yīng)用程序。我們還將討論移動(dòng)信息設(shè)備簡(jiǎn)表 (Mobile Information Device, MIDP) 用戶界面開(kāi)發(fā)，這種開(kāi)發(fā)也要用到 CLDC。最后，我們將簡(jiǎn)單討論一下連接設(shè)備配置 (Connected Device Configuration, CDC)，但我們不開(kāi)發(fā)一個(gè)簡(jiǎn)單的應(yīng)用程序，因?yàn)?CDC 主要面向大型設(shè)備。";
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輸出類</font></b></td><td width="200" align="right"><nobr><font size="1" face="Verdana, Arial, Helvetica">第 7 頁(yè)（共 11 頁(yè)）</font></nobr></td></tr></table><br x="7"><br x="7"><font size="2" face="Verdana, Arial, Helvetica"><p>
CLDC API 包含了許多 J2SE
中的共同使用的輸出類。特別是，CLDC java.io
軟件包中包括下面一些輸出類：
</p><ul><li><code style="font-family: Courier New, Courier, monospace; font-size: 12">ByteArrayOutputStream</code> -- 實(shí)現(xiàn)一個(gè)輸出流，在此輸出流中數(shù)據(jù)被寫入字節(jié)數(shù)組。<br x="7"><br x="7"></li><li><code style="font-family: Courier New, Courier, monospace; font-size: 12">DataOutput</code> -- 一種接口，提供原始 Java
數(shù)據(jù)類型以供寫入二進(jìn)制輸出流。<code style="font-family: Courier New, Courier, monospace; font-size: 12">DataOutputStream </code>提供該接口的實(shí)現(xiàn)。<br x="7"><br x="7"></li><li><code style="font-family: Courier New, Courier, monospace; font-size: 12">DataOutputStream</code> --
一個(gè)輸出流，允許應(yīng)用程序以一種便捷的方式編寫原始
Java 數(shù)據(jù)類型。<br x="7"><br x="7"></li><li><code style="font-family: Courier New, Courier, monospace; font-size: 12">OutputStream</code> -- 一個(gè)抽象類，它是所有代表字節(jié)輸出流的類的超級(jí)類。<br x="7"><br x="7"><li><code style="font-family: Courier New, Courier, monospace; font-size: 12">OutputStreamReader</code> --
給出字符，并按指定的字符編碼方法將其轉(zhuǎn)換為字節(jié)。<br x="7"><br x="7"></li><li><code style="font-family: Courier New, Courier, monospace; font-size: 12">PrintStream</code> -- 添加一種便捷的方法來(lái)打印數(shù)據(jù)值的文本表現(xiàn)形式。<br x="7"><br x="7"></li><li><code style="font-family: Courier New, Courier, monospace; font-size: 12">Writer</code> --
編寫字符流的一個(gè)抽象類。</li></ul><p>其中一些類可能不包含 J2SE 支持的所有方法，比如浮點(diǎn)和雙精度方法。
</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="主菜單" 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="index7.shtml"><img alt="章節(jié)菜單" 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="給出此教程的反饋意見(jiàn)" 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-7-6.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-7-8.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>?? 快捷鍵說(shuō)明
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