interface 

<%@ page language="java" contentType="text/html; charset=GBK"%>
<%!interface animal //定义一个接口
{
    public abstract char getsound();
    }
class mouse implements animal
{
    public char sound;
    public mouse(){
        sound='a';
    }
    public char getsound(){
        return sound;
    }
    }
class cat implements animal
{
    public char sound;
    public cat(){
        sound='b';
    }
    public char getsound(){
        return sound;
    }
    }%>

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>interface</title>
</head>
<body>
<br>创建相应类的对象，执行对象的getsound()方法<br>
<%
char i,j;
mouse m=new mouse();
cat c=new cat();
i=m.getsound();
j=c.getsound();

out.print("<br>cat的sound:"+i);
out.print("<br>mouse的sound:"+j);
%>

</body>
</html>

 

posted @ 2019-03-27 21:11  三茶散茶  阅读(130)  评论(0)    收藏  举报