📄 java接口的妙用-java面向对象 - it电子教育门户 高端java培训.htm
字号:
<BR>publicclassJFrame
extendsFrameimplementsWindowConstants,Accessible,RootPaneContainer
<BR>3、外观与实现分离 <BR>//ClassItf.java
“接口只是一个非常‘纯‘的抽象的东西，你的实现代码都在我这里！”
<BR>publicclassClassItfimplementsInterface1,Interface2{
<BR> <BR> publicStringS="";
<BR> publicClassItf(){ <BR> }
<BR> publicvoidShowMessage(StringMSG)//实现了接口‘Interface1’ShowMessage
<BR> { <BR>
System.out.print(this.getClass().getName()+"====="+MSG+"====byInterface1n/");
<BR> <BR> }
<BR> publicvoidsetS(Stringstr)//实现了接口‘Interface1’setS
<BR> <BR> { <BR> S=str; <BR> }
<BR> publicStringgetS()//实现了接口‘Interface1’getS <BR>
<BR> <BR> { <BR> returnS; <BR> }
<BR> publicvoidShowMessage2(StringMSG)//实现了接口‘Interface2’ShowMessage2
<BR> { <BR>
System.out.print(this.getClass().getName()+"====="+MSG+"====byInterface2n/");
<BR> } <BR>} <BR> <BR>4、提供调用的影子 <BR>
publicvoidShowMessage(Interface1req) <BR> {
<BR> req.ShowMessage("111"); <BR> }
<BR> publicvoidShowMessage2(Interface2req) <BR> {
<BR> req.ShowMessage2("111"); <BR> }
<BR>
<BR> voidjButton1_actionPerformed(ActionEvente){
<BR> privateClassItfC1=newClassItf();
<BR> ShowMessage(C1); <BR>
ShowMessage2(C1); <BR> } <BR>同样呀，我的应用也非常的广呀！
<BR>比如在Servlet的
<BR>publicvoiddoPost(HttpServletRequestrequest,HttpServletResponseresponse)
<BR>publicvoiddoGet(HttpServletRequestrequest,HttpServletResponseresponse)
<BR>HttpServletRequest,HttpServletResponse我的应用！ <BR>其它如：
<BR>事件Listen呀：
<BR>publicvoidaddActionListener(ActionListenerl)
<BR>Observer模式呀！ <BR> <BR>5、通过接口实现引用传递
<BR> publicvoidSetS1(Interface1req) <BR> {
<BR> req.setS("NewValuewithC1"); <BR> }
<BR> publicvoidSetS2(ClassNoitfreq) <BR> {
<BR> req.setS("NewValuewithC2"); <BR> }
<BR>
<BR> voidjButton3_actionPerformed(ActionEvente){
<BR> ClassItfC1=newClassItf(); <BR>
ClassNoitfC2=newClassNoitf(); <BR> //SetC1
<BR> SetS1(C1); <BR> //SetC2;
<BR> SetS2(C2); <BR> //GetValue
<BR> System.out.print(C1.getS()); <BR>
System.out.print(C2.getS()); <BR> }
<BR>(转载文章请保留出处：北天JAVA技术网(www.java114.com))</FONT>
</DIV></SPAN></TD></TR>
<TR>
<TD width="71%"> </TD>
<TD width="29%">【 <A
href="http://www.mldn.cn/print.jtml?articleid=2430">打印</A> 】【
<A
href="http://www.mldn.cn/member/favlist.jtml?action=add&postid=2430">收藏</A>
】【 <A href="http://www.mldn.cn/email.jtml?articleid=2430"
target=_blank>推荐</A> 】 </TD></TR>
<TR>
<TD colSpan=2>
<TABLE cellSpacing=3 cellPadding=0 width="100%" align=center
bgColor=#ffffff border=0>
<TBODY>
<TR height=25>
<TD align=middle width="33%"><IMG height=95 alt=java视频教程
src="JAVA接口的妙用-JAVA面向对象 - IT电子教育门户 高端JAVA培训.files/javavideo.gif"
width=642></TD></TR>
<TR>
<TD class=content-table vAlign=top align=middle>
<TABLE>
<TBODY>
<TR>
<TD>
<TABLE>
<TBODY>
<TR>
<TD><A
href="http://www.mldn.cn/articleview/2007-8-21/article_view_2251.htm"
rel=external><IMG class=midImg alt=struts2.0入门视频
src="JAVA接口的妙用-JAVA面向对象 - IT电子教育门户 高端JAVA培训.files/struts2.gif"
width=90></A></TD></TR>
<TR>
<TD style="HEIGHT: 22px"> <A
title=struts2.0入门视频
href="http://www.mldn.cn/articleview/2007-8-21/article_view_2251.htm"
rel=external>struts2.0入门视频</A></TD></TR></TBODY></TABLE></TD>
<TD>
<TABLE>
<TBODY>
<TR>
<TD><A
href="http://www.mldn.cn/articleview/2007-6-15/article_view_2141.htm"
rel=external><IMG class=midImg
alt=JAVAEE学习流程和学习方法
src="JAVA接口的妙用-JAVA面向对象 - IT电子教育门户 高端JAVA培训.files/j2eejc.gif"
width=90></A></TD></TR>
<TR>
<TD style="HEIGHT: 22px"> <A
title=JAVAEE学习流程和学习方法
href="http://www.mldn.cn/articleview/2007-6-15/article_view_2141.htm"
rel=external>JAVAEE学习流程和学习方..</A></TD></TR></TBODY></TABLE></TD>
<TD>
<TABLE>
<TBODY>
<TR>
<TD><A
href="http://www.mldn.cn/articleview/2007-6-5/article_view_2091.htm"
rel=external><IMG class=midImg
alt=1-Java介绍及JDK配置
src="JAVA接口的妙用-JAVA面向对象 - IT电子教育门户 高端JAVA培训.files/javase.gif"
width=90></A></TD></TR>
<TR>
<TD style="HEIGHT: 22px"> <A
title=1-Java介绍及JDK配置
href="http://www.mldn.cn/articleview/2007-6-5/article_view_2091.htm"
rel=external>1-Java介绍及JDK配置..</A></TD></TR></TBODY></TABLE></TD>
<TD>
<TABLE>
<TBODY>
<TR>
<TD><A
href="http://www.mldn.cn/articleview/2007-4-19/article_view_2012.htm"
rel=external><IMG class=midImg alt=Oracle中的多表连接
src="JAVA接口的妙用-JAVA面向对象 - IT电子教育门户 高端JAVA培训.files/Oracle.gif"
width=90></A></TD></TR>
<TR>
<TD style="HEIGHT: 22px"> <A
title=Oracle中的多表连接
href="http://www.mldn.cn/articleview/2007-4-19/article_view_2012.htm"
rel=external>Oracle中的多表连接</A></TD></TR></TBODY></TABLE></TD>
<TD>
<TABLE>
<TBODY>
<TR>
<TD><A
href="http://www.mldn.cn/articleview/2007-4-11/article_view_1978.htm"
rel=external><IMG class=midImg
alt=Struts中logic标签的使用
src="JAVA接口的妙用-JAVA面向对象 - IT电子教育门户 高端JAVA培训.files/struts.gif"
width=90></A></TD></TR>
<TR>
<TD style="HEIGHT: 22px"> <A
title=Struts中logic标签的使用
href="http://www.mldn.cn/articleview/2007-4-11/article_view_1978.htm"
rel=external>Struts中logic标签..</A></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE></TD></TR>
<TR>
<TD colSpan=2>
<TABLE cellSpacing=3 cellPadding=0 width="100%" align=center
bgColor=#ffffff border=0>
<TBODY>
<TR height=25>
<TD align=middle width="33%" bgColor=#aac4c4><FONT
color=#ffffff>相关文章</FONT></TD>
<TD align=middle width="33%" bgColor=#aac4c4><FONT
color=#ffffff>推荐文章</FONT></TD></TR>
<TR>
<TD class=content-table vAlign=top>
<TABLE>
<TBODY>
<TR>
<TD><A
href="http://www.mldn.cn/articleview/2007-11-7/article_view_2650.htm"
rel=external>垃圾收集器与Java程序的性能</A> <IMG
alt=24小时内新文章
src="JAVA接口的妙用-JAVA面向对象 - IT电子教育门户 高端JAVA培训.files/new.gif"
align=absMiddle border=0></TD>
<TD style="TEXT-ALIGN: right"><SPAN
class=link-Date>[11.7]</SPAN></TD></TR>
<TR>
<TD><A
href="http://www.mldn.cn/articleview/2007-11-7/article_view_2652.htm"
rel=external>详细解析Java中抽象类和接口的..</A> <IMG
alt=24小时内新文章
src="JAVA接口的妙用-JAVA面向对象 - IT电子教育门户 高端JAVA培训.files/new.gif"
align=absMiddle border=0></TD>
<TD style="TEXT-ALIGN: right"><SPAN
class=link-Date>[11.7]</SPAN></TD></TR>
<TR>
<TD><A
href="http://www.mldn.cn/articleview/2007-11-2/article_view_2624.htm"
rel=external>讲述java语言中内部类的研究</A></TD>
<TD style="TEXT-ALIGN: right"><SPAN
class=link-Date>[11.2]</SPAN></TD></TR>
<TR>
<TD><A
href="http://www.mldn.cn/articleview/2007-11-1/article_view_2618.htm"
rel=external>通过实例学习Java对象的构造过..</A></TD>
<TD style="TEXT-ALIGN: right"><SPAN
class=link-Date>[11.1]</SPAN></TD></TR>
<TR>
<TD><A
href="http://www.mldn.cn/articleview/2007-11-1/article_view_2619.htm"
rel=external>详细讲解This对象的使用方法</A></TD>
<TD style="TEXT-ALIGN: right"><SPAN
class=link-Date>[11.1]</SPAN></TD></TR></TBODY></TABLE></TD>
<TD class=content-table vAlign=top>
<TABLE>
<TBODY>
<TR>
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -