1.index.jsp代码
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<html>
<body>
<%! double multi(double x,double y){
return x*y;
}
double div(double x,double y){
return x/y;
}
%>
<% double x=3.56;
double y=18;
out.println("调用multi方法，计算"+x+"与"+y+"的积：<br>");
out.println(multi(x,y));
out.println("<br>调用div方法，计算"+x+"除以"+y+"的商<br>");
out.println(String.format("小数点保留3位：%10.3f",div(x,y)));
%>
</body>
</html>
2.显示结果
