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Saturday, 2 December 2017

How to send data from one page to other page java jsp programming code

Learning Java Programming Made Easy

Page 1: first page (html/jsp)

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <!--script let java code-->
        <%
            out.println("<h1>hello how are u</h1>");
        %>
        <br>
        <!--expression java code-->
        <%= "hi hello how are u"%>
        <br>
        <!--declaration java code-->
        <%! int age = 18;%>
        <%!

            int sum(int i, int j) {
                return i + j;
            }

        %>  
        <%= "the sum of 2 no=" + sum(4, 5)%><br>
        <%= "the age of emp=" + age%><br>
        <jsp:forward page="forwrod.jsp"></jsp:forward>
    </body>
</html>

Page 2: Second page (HTMl/JSP)

<%-- 
    Document   : second
    Created on : Jan 31, 2017, 11:33:55 AM
    Author     : my pc
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<!DOCTYPE html>

<html>

    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

        <title>JSP Page</title>

    </head>

    <body>

        <form action="third.jsp">

            username:<input type="text" name="user"/>

            <input type="submit" value="click"/>

        </form>
           
    </body>

</html>

Page 3: Third page (html/jsp)

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<!DOCTYPE html>

<html>

    <head>

        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

        <title>JSP Page</title>

    </head>

    <body>

<%

      String str=request.getParameter("user");

      out.println("username="+str);

%>

    </body>

</html>

How to get todays date using java jsp code and programming

Learning Java Programming Made Easy

<%-- 
    Document   : date
    Created on : Feb 14, 2017, 12:12:49 PM
    Author     : my pc
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<!DOCTYPE html>

<html>

<body>

<p>

   Today's date: <%= (new java.util.Date().toString())%>

</p>

</body>

</html>

How to call stored COOKIES using java jsp programming code and get data out

Learning Java Programming Made Easy

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<!DOCTYPE html>

<html>

<body>

    <form action="coock.jsp" method="GET">

First Name: <input type="text" name="first_name">

<br />

Last Name: <input type="text" name="last_name" />

<input type="submit" value="Submit" />

</form>

</body>

How to store COOKEIS using java jsp code

Learning Java Programming Made Easy

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<!DOCTYPE html>

<%

   // Create cookies for first and last names.

   Cookie firstName = new Cookie("first_name",request.getParameter("first_name"));

   Cookie lastName = new Cookie("last_name",request.getParameter("last_name"));

   // Set expiry date after one hour for both the cookies.

   firstName.setMaxAge(1*1);

   lastName.setMaxAge(1*1);

   // Add both the cookies in the response header.

   response.addCookie( firstName );

   response.addCookie( lastName );

%>

<html>

<body>

<b>First Name:</b><%= request.getParameter("first_name")%><br/>

<b>Last  Name:</b><%= request.getParameter("last_name")%>

</body>

</html>

How to get IP using Java jsp programming

Learning Java Programming Made Easy

<%-- 
    Document   : ip
    Created on : Feb 14, 2017, 12:11:42 PM
    Author     : my pc
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<!DOCTYPE html>

<html>

<head><title>Hello World</title></head>

<body>

Hello World!<br/>

<%

out.println("Your IP address is " + request.getRemoteAddr());

%>

</body>

</html>

Hoe to upload a file on website unsig java jsp programming

Learning Java Programming Made Easy

HTML/JSP View File:

<%-- 
    Document   : upload
    Created on : Feb 14, 2017, 12:25:46 PM
    Author     : my pc
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<!DOCTYPE html>

<html>

<body>

Select a file to upload: <br />

<form action="uploadtarget.jsp" method="post" enctype="multipart/form-data">

<input type="file" name="file" size="50" />

<br />

<input type="submit" value="Upload File" />

</form>

</body>

</html>

/**********************************************************/

JSP Controller File:     uploadtarget.jsp

<%-- 
    Document   : uploadtarget'
    Created on : Feb 14, 2017, 12:26:40 PM
    Author     : my pc
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<%@page import="java.io.*,java.util.*,javax.servlet.*" %>
<%@ page import="javax.servlet.http.*" %>
<%@ page import="org.apache.commons.fileupload.*" %>
<%@ page import="org.apache.commons.fileupload.disk.*" %>
<%@ page import="org.apache.commons.fileupload.servlet.*" %>
<%@ page import="org.apache.commons.io.output.*" %>
<%
   File file ;
   int maxFileSize = 5000 * 1024;
   int maxMemSize = 5000 * 1024;
   String filePath = "c:/apache-tomcat/webapps/data/";

   String contentType = request.getContentType();
   if ((contentType.indexOf("multipart/form-data") >= 0)) {

      DiskFileItemFactory factory = new DiskFileItemFactory();
      factory.setSizeThreshold(maxMemSize);
      factory.setRepository(new File("c:\\temp"));
      ServletFileUpload upload = new ServletFileUpload(factory);
      upload.setSizeMax( maxFileSize );
      try{ 
         List fileItems = upload.parseRequest(request);
         Iterator i = fileItems.iterator();
         out.println("<html>");
         out.println("<body>");
         while ( i.hasNext () ) 
         {
            FileItem fi = (FileItem)i.next();
            if ( !fi.isFormField () )  {
                String fieldName = fi.getFieldName();
                String fileName = fi.getName();
                boolean isInMemory = fi.isInMemory();
                long sizeInBytes = fi.getSize();
                file = new File( filePath + "yourFileName") ;
                fi.write( file ) ;
                out.println("Uploaded Filename: " + filePath + fileName + "<br>");
            }
         }
         out.println("</body>");
         out.println("</html>");
      }catch(Exception ex) {
         System.out.println(ex);
      }
   }else{
      out.println("<html>");
      out.println("<body>");
      out.println("<p>No file uploaded</p>"); 
      out.println("</body>");
      out.println("</html>");
   }
%>

How to use auto refresh using java jsp program code

Learning Java Programming Made Easy

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<!DOCTYPE html>

<%@ page import="java.io.*,java.util.*;" %>

<html>

<body>

<%

   response.setIntHeader("Refresh", 1);

   Calendar calendar = new GregorianCalendar();

   String am_pm;

   int hour = calendar.get(Calendar.HOUR);

   int minute = calendar.get(Calendar.MINUTE);

   int second = calendar.get(Calendar.SECOND);

   if(calendar.get(Calendar.AM_PM) == 0)

      am_pm = "AM";

   else

      am_pm = "PM";

   String CT = hour+":"+ minute +":"+ second +" "+ am_pm;

   out.println( CT + "\n");

%>

</body>

</html>

How to use if loop in java programming

Learning Java Programming Made Easy

import java.io.*
import java.util.*

public class ifloop
{
public static void main(String args[])
{
int x;
Scanner sc=new Scanner(System.in);
System.out.println("Enter 1 or 2");
x=sc.nextInt();
if(x==1)
{
System.out.println("Well Done...! You Entered x="+x);
}
elseif(x==2)
{
System.out.println("Congrats...! You Entered x="+x);
}
else
{
System.out.println("Sorry...! Invalid Numbar");
}
}
}

How to use for loop in java program

Learning Java Programming Made Easy

import java.io.*;
import java.util.*;

public class forloop
{
public static void main(String args[])
{
int x,y;
Scanner sc=new Scanner(System.in);
System.out.println("Enter the maximum count");
y=sc.nextInt();
for(x=0;x<y;x++)
{
System.out.println("x="+x);
}
}
}

How to use Do-While loop in java

Learning Java Programming Made Easy

import java.io.*;
import java.util.*;

public class do_while
{
public static void main(String args[])
{
int x=0;
do
{
x=x+1;
System.out.println("x="+x);
}
while(x!=10);
}
}

website design and coding in java for free to learn

Saturday, 2 December 2017

How to send data from one page to other page java jsp programming code

How to get todays date using java jsp code and programming

How to call stored COOKIES using java jsp programming code and get data out

How to store COOKEIS using java jsp code

How to get IP using Java jsp programming

Hoe to upload a file on website unsig java jsp programming

How to use auto refresh using java jsp program code

How to use if loop in java programming

How to use for loop in java program

How to use Do-While loop in java

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