第二周作业

1.p39   实验2 显示当前时间，并输出上午(0-12)好,下午好(13-17),晚上好(18-23)

 

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%!public int continueSum(int start, int end) {
        int sum = 0;
        for (int i = start; i <= end; i++)
            sum = sum + i;
        return sum;
    }%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

<title>My JSP 'index.jsp' starting page</title>

</head>

<body>
    <script type="text/javascript">
        var userTime = new Date();
        var hour = userTime.getHours();
        var minute = userTime.getMinutes();
        document.write("浏览器时间:"+hour + ":" + minute);
        
    </script>
    <%
        Date d = new Date();
        int hour = d.getHours();
        int minute = d.getMinutes();
out.print("服务器时间:"+hour + ":" + minute);
        if (hour >= 0 && hour <= 12) {
            out.print("上午好");
        } else if (hour >= 13 && hour <= 17) {
            out.print("下午好");
        } else {
            out.print("晚上好");
        }
    %>
</body>
</html>

 

 

 

 

 

2. 使用声明方法,在页面调用该方法,判断2023是不是闰年

 

 <%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

<title>My JSP 'index.jsp' starting page</title>

</head>

<body>
<%! public void run(int year){

    if((year%4==0&&year%100!=0)||(year%400==0)){
        System.out.print(year+"是闰年");
      }
     else{
     System.out.print(year+"不是闰年");
     
        }
    } %>
    <% int year=2023;
        run(year);
     %>
</body>
</html>

 

 

 

 

3.表达式+程序段   循环输出5条hr,长度分别为100px-500px

 

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

<title>My JSP 'index.jsp' starting page</title>

</head>

<body>

         <%for(int i=1;i<=5;i++){ %>
         <hr width="<%=i*100%>">
         
       <% 
       } %>
    
</body>
</html>

 

 

 

 

4.在第一题上加Java注释,第二题加html注释,第三题加jsp注释

 

第一题注释

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%!public int continueSum(int start, int end) {
		int sum = 0;
		for (int i = start; i <= end; i++)
			sum = sum + i;
		return sum;
	}%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

<title>My JSP 'index.jsp' starting page</title>

</head>

<body>
	<script type="text/javascript">
		var userTime = new Date();
		var hour = userTime.getHours();
		var minute = userTime.getMinutes();
		document.write("浏览器时间:"+hour + ":" + minute);
		
	</script>
	
	<%
	/*
		Date d = new Date();
		int hour = d.getHours();
		int minute = d.getMinutes();
out.print("服务器时间:"+hour + ":" + minute);
		if (hour >= 0 && hour <= 12) {
			out.print("上午好");
		} else if (hour >= 13 && hour <= 17) {
			out.print("下午好");
		} else {
			out.print("晚上好");
		}
		*/
	%>
	
</body>
</html>

　　

  第二题注释

 

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

<title>My JSP 'index.jsp' starting page</title>

</head>
<!-- 这个是HTML注释 -->
<body>
<%! public void run(int year){

    if((year%4==0&&year%100!=0)||(year%400==0)){
        System.out.print(year+"是闰年");
      }
     else{
     System.out.print(year+"不是闰年");
     
        }
    } %>
    <% int year=2023;
        run(year);
     %>
</body>
</html>

 

第三题注释

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>

<title>My JSP 'index.jsp' starting page</title>

</head>

<body>


<%--  这个是jsp的注释 --%>
         <%for(int i=1;i<=5;i++){ %>
         <hr width="<%=i*100%>">
         
       <% 
       } %>
    
</body>
</html>

 

 

 

 

 

 

posted @ 2022-03-12 12:14  倪楠  阅读(40)  评论(0)    收藏  举报