锘??xml version="1.0" encoding="utf-8" standalone="yes"?>国产一区二区三区丝袜,麻豆精品蜜桃,美女日韩一区http://www.aygfsteel.com/jujunchen/category/40491.htmlJAVA SERVER PAGESzh-cnThu, 23 Jul 2009 08:18:58 GMTThu, 23 Jul 2009 08:18:58 GMT60java綾誨瀷寮哄埗杞崲http://www.aygfsteel.com/jujunchen/archive/2009/07/22/287933.htmlC楦¢浮C楦¢浮Wed, 22 Jul 2009 15:44:00 GMThttp://www.aygfsteel.com/jujunchen/archive/2009/07/22/287933.htmlhttp://www.aygfsteel.com/jujunchen/comments/287933.htmlhttp://www.aygfsteel.com/jujunchen/archive/2009/07/22/287933.html#Feedback0http://www.aygfsteel.com/jujunchen/comments/commentRss/287933.htmlhttp://www.aygfsteel.com/jujunchen/services/trackbacks/287933.html闂錛?/span>
class A{
int sum;
}
class B extends A{
double sum;
public static void main(String args[]){
A a=new A();
B b=new B();
b=(A)a;//寮傚父錛熻鏁檞hy?
}
}

鍥炵瓟錛?br />


褰㈣薄涓鐐硅錛?br /> class 浜簕
int sum;
}
class 鐢蜂漢 extends 浜簕
double sum;
public static void main(String args[]){
浜?a=new 浜?);
鐢蜂漢 b=new 鐢蜂漢();
b=(鐢蜂漢)a;
}
}
浣犺兘鎶?#8220;浜?#8221;寮哄埗杞崲鎴?#8220;鐢蜂漢”鍚楋紵錛熷緢鏄劇劧涓嶈兘
鎵璋?#8220;鐖剁被鍚戝瓙綾昏漿鎹㈡槸寮哄埗杞崲”鏄寚榪欑鎯呭喌
A a=new B();
B b=(B)a;
姝ゆ椂a瀹為檯涓婃槸涓涓狟鐨勫疄渚嬶紝浣嗚瀹氫箟涓篈錛岃繖鏍峰氨鏃犳硶璋冪敤B涓畾涔夌殑鏂規硶錛屽彧鏈夊湪寮哄埗杞崲涓築鐨勫疄渚嬪悗鎵嶈兘璋冪敤B涓畾涔夌殑鏂規硶鈥斺斿墠鎻愭槸錛歛鏄疊鐨勫疄渚?br /> 濡傛灉鏄?br /> A a=new A();
B b=new B();
b=(A)a;
a鏈韓鏄疉鐨勫疄渚嬶紝涓嶅叿鏈塀鐨勭壒寰侊紝涓嶅彲鑳借漿鎹負B鐨勫疄渚嬨?br /> 榪欏氨鍍忎綘涓嶈兘
Object obj=new Object();
String str = (String)obj;

]]>
鐢↗AVA鐢熸垚鍥劇墖鐨勭畝鍗曚緥瀛?/title><link>http://www.aygfsteel.com/jujunchen/archive/2009/06/27/284386.html</link><dc:creator>C楦¢浮</dc:creator><author>C楦¢浮</author><pubDate>Sat, 27 Jun 2009 04:19:00 GMT</pubDate><guid>http://www.aygfsteel.com/jujunchen/archive/2009/06/27/284386.html</guid><wfw:comment>http://www.aygfsteel.com/jujunchen/comments/284386.html</wfw:comment><comments>http://www.aygfsteel.com/jujunchen/archive/2009/06/27/284386.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/jujunchen/comments/commentRss/284386.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/jujunchen/services/trackbacks/284386.html</trackback:ping><description><![CDATA[<p> </p> <div style="border-right: #cccccc 1px solid; padding-right: 5px; border-top: #cccccc 1px solid; padding-left: 4px; font-size: 13px; padding-bottom: 4px; border-left: #cccccc 1px solid; width: 98%; word-break: break-all; padding-top: 4px; border-bottom: #cccccc 1px solid; background-color: #eeeeee"><img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" alt="" /><span style="color: #0000ff">import</span><span style="color: #000000"> java.awt.</span><span style="color: #000000">*</span><span style="color: #000000">;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" alt="" /></span><span style="color: #0000ff">import</span><span style="color: #000000"> java.awt.image.</span><span style="color: #000000">*</span><span style="color: #000000">;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" alt="" /></span><span style="color: #0000ff">import</span><span style="color: #000000"> java.io.</span><span style="color: #000000">*</span><span style="color: #000000">;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" alt="" /></span><span style="color: #0000ff">import</span><span style="color: #000000"> javax.imageio.</span><span style="color: #000000">*</span><span style="color: #000000">;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" alt="" /></span><span style="color: #0000ff">import</span><span style="color: #000000"> java.awt.font.</span><span style="color: #000000">*</span><span style="color: #000000">;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" alt="" /></span><span style="color: #0000ff">import</span><span style="color: #000000"> java.awt.geom.</span><span style="color: #000000">*</span><span style="color: #000000">;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" alt="" />   <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/None.gif" align="top" alt="" /></span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">class</span><span style="color: #000000"> CreateImage     <br /> <img id="Codehighlighter1_192_1245_Open_Image" onclick="this.style.display='none'; Codehighlighter1_192_1245_Open_Text.style.display='none'; Codehighlighter1_192_1245_Closed_Image.style.display='inline'; Codehighlighter1_192_1245_Closed_Text.style.display='inline';" src="http://www.aygfsteel.com/images/OutliningIndicators/ExpandedBlockStart.gif" align="top" alt="" /><img id="Codehighlighter1_192_1245_Closed_Image" style="display: none" onclick="this.style.display='none'; Codehighlighter1_192_1245_Closed_Text.style.display='none'; Codehighlighter1_192_1245_Open_Image.style.display='inline'; Codehighlighter1_192_1245_Open_Text.style.display='inline';" src="http://www.aygfsteel.com/images/OutliningIndicators/ContractedBlock.gif" align="top" alt="" /></span><span id="Codehighlighter1_192_1245_Closed_Text" style="border-right: #808080 1px solid; border-top: #808080 1px solid; display: none; border-left: #808080 1px solid; border-bottom: #808080 1px solid; background-color: #ffffff"><img src="http://www.aygfsteel.com/Images/dot.gif" alt="" /></span><span id="Codehighlighter1_192_1245_Open_Text"><span style="color: #000000">{    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />    </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> </span><span style="color: #0000ff">void</span><span style="color: #000000"> main(String[] args) </span><span style="color: #0000ff">throws</span><span style="color: #000000"> Exception    <br /> <img id="Codehighlighter1_266_1239_Open_Image" onclick="this.style.display='none'; Codehighlighter1_266_1239_Open_Text.style.display='none'; Codehighlighter1_266_1239_Closed_Image.style.display='inline'; Codehighlighter1_266_1239_Closed_Text.style.display='inline';" src="http://www.aygfsteel.com/images/OutliningIndicators/ExpandedSubBlockStart.gif" align="top" alt="" /><img id="Codehighlighter1_266_1239_Closed_Image" style="display: none" onclick="this.style.display='none'; Codehighlighter1_266_1239_Closed_Text.style.display='none'; Codehighlighter1_266_1239_Open_Image.style.display='inline'; Codehighlighter1_266_1239_Open_Text.style.display='inline';" src="http://www.aygfsteel.com/images/OutliningIndicators/ContractedSubBlock.gif" align="top" alt="" />    </span><span id="Codehighlighter1_266_1239_Closed_Text" style="border-right: #808080 1px solid; border-top: #808080 1px solid; display: none; border-left: #808080 1px solid; border-bottom: #808080 1px solid; background-color: #ffffff"><img src="http://www.aygfsteel.com/Images/dot.gif" alt="" /></span><span id="Codehighlighter1_266_1239_Open_Text"><span style="color: #000000">{    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        </span><span style="color: #0000ff">int</span><span style="color: #000000"> width </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">100</span><span style="color: #000000">;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        </span><span style="color: #0000ff">int</span><span style="color: #000000"> height </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">100</span><span style="color: #000000">;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        String s </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">"</span><span style="color: #000000">浣犲ソ</span><span style="color: #000000">"</span><span style="color: #000000">;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />            <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        File file </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> File(</span><span style="color: #000000">"</span><span style="color: #000000">c:/image.jpg</span><span style="color: #000000">"</span><span style="color: #000000">);    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />            <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        Font font </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> Font(</span><span style="color: #000000">"</span><span style="color: #000000">Serif</span><span style="color: #000000">"</span><span style="color: #000000">, Font.BOLD, </span><span style="color: #000000">10</span><span style="color: #000000">);    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        BufferedImage bi </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        Graphics2D g2 </span><span style="color: #000000">=</span><span style="color: #000000"> (Graphics2D)bi.getGraphics();    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        g2.setBackground(Color.WHITE);    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        g2.clearRect(</span><span style="color: #000000">0</span><span style="color: #000000">, </span><span style="color: #000000">0</span><span style="color: #000000">, width, height);    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        g2.setPaint(Color.RED);    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />            <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        FontRenderContext context </span><span style="color: #000000">=</span><span style="color: #000000"> g2.getFontRenderContext();    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        Rectangle2D bounds </span><span style="color: #000000">=</span><span style="color: #000000"> font.getStringBounds(s, context);    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        </span><span style="color: #0000ff">double</span><span style="color: #000000"> x </span><span style="color: #000000">=</span><span style="color: #000000"> (width </span><span style="color: #000000">-</span><span style="color: #000000"> bounds.getWidth()) </span><span style="color: #000000">/</span><span style="color: #000000"> </span><span style="color: #000000">2</span><span style="color: #000000">;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        </span><span style="color: #0000ff">double</span><span style="color: #000000"> y </span><span style="color: #000000">=</span><span style="color: #000000"> (height </span><span style="color: #000000">-</span><span style="color: #000000"> bounds.getHeight()) </span><span style="color: #000000">/</span><span style="color: #000000"> </span><span style="color: #000000">2</span><span style="color: #000000">;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        </span><span style="color: #0000ff">double</span><span style="color: #000000"> ascent </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">-</span><span style="color: #000000">bounds.getY();    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        </span><span style="color: #0000ff">double</span><span style="color: #000000"> baseY </span><span style="color: #000000">=</span><span style="color: #000000"> y </span><span style="color: #000000">+</span><span style="color: #000000"> ascent;    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />            <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        g2.drawString(s, (</span><span style="color: #0000ff">int</span><span style="color: #000000">)x, (</span><span style="color: #0000ff">int</span><span style="color: #000000">)baseY);    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />            <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/InBlock.gif" align="top" alt="" />        ImageIO.write(bi, </span><span style="color: #000000">"</span><span style="color: #000000">jpg</span><span style="color: #000000">"</span><span style="color: #000000">, file);    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/ExpandedSubBlockEnd.gif" align="top" alt="" />    }</span></span><span style="color: #000000">    <br /> <img src="http://www.aygfsteel.com/images/OutliningIndicators/ExpandedBlockEnd.gif" align="top" alt="" />}</span></span></div> 緇撴灉錛?br /> <img alt="" src="http://www.aygfsteel.com/images/blogjava_net/jujunchen/image.jpg" border="0" /> <img src ="http://www.aygfsteel.com/jujunchen/aggbug/284386.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/jujunchen/" target="_blank">C楦¢浮</a> 2009-06-27 12:19 <a href="http://www.aygfsteel.com/jujunchen/archive/2009/06/27/284386.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss> <footer> <div class="friendship-link"> <a href="http://www.aygfsteel.com/" title="狠狠久久亚洲欧美专区_中文字幕亚洲综合久久202_国产精品亚洲第五区在线_日本免费网站视频">狠狠久久亚洲欧美专区_中文字幕亚洲综合久久202_国产精品亚洲第五区在线_日本免费网站视频</a> </div> </footer> 主站蜘蛛池模板: <a href="http://" target="_blank">沂源县</a>| <a href="http://" target="_blank">涞源县</a>| <a href="http://" target="_blank">奇台县</a>| <a href="http://" target="_blank">北辰区</a>| <a href="http://" target="_blank">拉萨市</a>| <a href="http://" target="_blank">阿拉善右旗</a>| <a href="http://" target="_blank">揭西县</a>| <a href="http://" target="_blank">图片</a>| <a href="http://" target="_blank">孙吴县</a>| <a href="http://" target="_blank">定安县</a>| <a href="http://" target="_blank">福安市</a>| <a href="http://" target="_blank">连城县</a>| <a href="http://" target="_blank">玛纳斯县</a>| <a 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