1 <html>
<head>
<title>
HelloWorld Example
</title>
</head>
<body>
－－－－－－－－－－－－－－
<%
String Msg="This is a Jsp Test";
out.print("Hello World");
%>//Java模块 申明Msg为字符串变量
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<h2> <%=Msg%></h2>//输出变量
</body>
</html>
2 在客户端的源代码中显示注释：
<!--This File displays the user login screen,and the time is <%=(new java.util.Date()).toString()%>-->//
<html>
<head>
<title>
HelloWorld Example
</title>
</head>
<body>
<%
String Msg="我是tomcat";
out.print("Hello World");
%>
<h2> <%=Msg%></h2>
</body>
</html>
3 隐藏注释
<!--This File displays the user login screen,and the time is <%=(new java.util.Date()).toString()%>-->
<%@page language="java"%>//客户端看不到注释
<html>
<head>
<title>
HelloWorld Example
</title>
</head>
<body>
<%
String Msg="我是tomcat";
out.print("Hello World");
%>
<h2> <%=Msg%></h2>
</body>
</html>
4 声明变量，方法和新的类
<!--This File displays the user login screen,and the time is <%=(new java.util.Date()).toString()%>-->
<%@page language="java"%>
<html>
<head>
<title>
HelloWorld Example
</title>
</head>
<body>
<%!
public class University
{
String name,city;
University(String name,String city)
{
this.name=name;
this.city=city;
}
public String getName()
{
return name;
}
public String getCity()
{
return city;
}
}
%>
<%
University university1=new University("山东科技大学","青岛市");
University university2=new University("山东大学","济南市");
out.println("第一所大学是:");
out.println(university1.getName()+"<br>");
out.println(university1.getCity()+"<br>");
out.println("第二所大学是:");
out.println(university2.getName()+"<br>");
out.println(university2.getCity());
%>
</body>
</html>
5 表达式
<%@page language="java"%>
<html>
<head>
<title>
HelloWorld Example
</title>
</head>
<body>
<h2>A test of Expression</h2>
<%=(new java.util.Date()).toString()%>//表达式的结尾无；结束
</body>
</html>