Programming – Ajay Khatri

Privacy Policy “Learn HTML5 Programming”

September 18, 2018 admin

General This app is developed by Ajay Khatri. Privacy Policy (“Policy”) describes how information obtained from users is collected, used and disclosed. By using this, you agree that your personal information will be handled as described in this Policy. Information Read More …

Java Packages Example

August 31, 2018 admin

//save as Simple.java  
package mypack.a1.a2;  
public class Simple{  
 public static void main(String args[]){  
    System.out.println("Welcome to package");  
   }  
}  

//Compile
//javac -d . Simple.java

//Run
//java mypack.a1.a2.Simple

//save as Simple.java

package mypack.a1.a2;

public class Simple{

public static void main(String args[]){

System.out.println("Welcome to package");

}

//Compile

//javac -d . Simple.java

//Run

//java mypack.a1.a2.Simple

Android Reference List

July 17, 2018July 17, 2018 admin

ADK: Android Development Kit, What people use to develop anything for the Android such as APPs and ROM’s adb: Android Debug Bridge, a command-line debugging application included with the SDK. It provides tools to browse the device, copy tools on the device, & forward ports for debugging. If you are developing in Eclipse using the ADT Plugin, adb is Read More …

JSP – File Uploading

April 10, 2018April 10, 2018 admin

Import two jar file first (Unzip and add both jar files) Download Zar Files jar files zip Create html page index.html

<!DOCTYPE html>
<html>
 <head>
 <title>File Uploading Form</title>
 </head>
 
 <body>
 <h3>File Upload:</h3>
 Select a file to upload: <br />
 <form action = "UploadFile.jsp" method = "post"
 enctype = "multipart/form-data">
 <input type = "file" name = "file" size = "50" />
 <br />
 <input type = "submit" value = "Upload File" />
 </form>
 </body>
 
</html>

<!DOCTYPE html>

<html>

<head>

<title>File Uploading Form</title>

</head>

<body>

<h3>File Upload:</h3>

Select a file to upload: <br />

<form action = "UploadFile.jsp" method = "post"

enctype = "multipart/form-data">

<br />

</form>

</body>

</html>

Create UploadFile.jsp

<%-- 
    Document   : UploadFile
    Created on : Apr 10, 2018, 3:57:15 PM
    Author     : Admin
--%>

<%@page import="java.io.File"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ 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;
   ServletContext context = pageContext.getServletContext();
   String filePath = context.getInitParameter("file-upload");

   // Verify the content type
   String contentType = request.getContentType();
   
   if ((contentType.indexOf("multipart/form-data") >= 0)) {
      DiskFileItemFactory factory = new DiskFileItemFactory();
      // maximum size that will be stored in memory
      factory.setSizeThreshold(maxMemSize);
      
      // Location to save data that is larger than maxMemSize.
      factory.setRepository(new File("c:\\tempp"));

      // Create a new file upload handler
      ServletFileUpload upload = new ServletFileUpload(factory);
      
      // maximum file size to be uploaded.
      upload.setSizeMax( maxFileSize );
      
      try { 
         // Parse the request to get file items.
         List fileItems = upload.parseRequest(request);

         // Process the uploaded file items
         Iterator i = fileItems.iterator();

         out.println("<html>");
         out.println("<head>");
         out.println("<title>JSP File upload</title>");  
         out.println("</head>");
         out.println("<body>");
         
         while ( i.hasNext () ) {
            FileItem fi = (FileItem)i.next();
            if ( !fi.isFormField () ) {
               // Get the uploaded file parameters
               String fieldName = fi.getFieldName();
               String fileName = fi.getName();
               boolean isInMemory = fi.isInMemory();
               long sizeInBytes = fi.getSize();
            
               // Write the file
               if( fileName.lastIndexOf("\\") >= 0 ) {
                  file = new File( filePath + 
                  fileName.substring( fileName.lastIndexOf("\\"))) ;
               } else {
                  file = new File( filePath + 
                  fileName.substring(fileName.lastIndexOf("\\")+1)) ;
               }
               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("<head>");
      out.println("<title>Servlet upload</title>");  
      out.println("</head>");
      out.println("<body>");
      out.println("<p>No file uploaded</p>"); 
      out.println("</body>");
      out.println("</html>");
   }
%>

<%--

Document : UploadFile

Created on : Apr 10, 2018, 3:57:15 PM

Author : Admin

--%>

<%@page import="java.io.File"%>

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

<%@ 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;

ServletContext context = pageContext.getServletContext();

String filePath = context.getInitParameter("file-upload");

// Verify the content type

String contentType = request.getContentType();

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

DiskFileItemFactory factory = new DiskFileItemFactory();

// maximum size that will be stored in memory

factory.setSizeThreshold(maxMemSize);

// Location to save data that is larger than maxMemSize.

factory.setRepository(new File("c:\\tempp"));

// Create a new file upload handler

ServletFileUpload upload = new ServletFileUpload(factory);

// maximum file size to be uploaded.

upload.setSizeMax( maxFileSize );

try {

// Parse the request to get file items.

List fileItems = upload.parseRequest(request);

// Process the uploaded file items

Iterator i = fileItems.iterator();

out.println("<html>");

out.println("<head>");

out.println("<title>JSP File upload</title>");

out.println("</head>");

out.println("<body>");

while ( i.hasNext () ) {

FileItem fi = (FileItem)i.next();

if ( !fi.isFormField () ) {

// Get the uploaded file parameters

String fieldName = fi.getFieldName();

String fileName = fi.getName();

boolean isInMemory = fi.isInMemory();

long sizeInBytes = fi.getSize();

// Write the file

if( fileName.lastIndexOf("\\") >= 0 ) {

file = new File( filePath +

fileName.substring( fileName.lastIndexOf("\\"))) ;

} else {

file = new File( filePath +

fileName.substring(fileName.lastIndexOf("\\")+1)) ;

}

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("<head>");

out.println("<title>Servlet upload</title>");

out.println("</head>");

out.println("<body>");

out.println("<p>No file uploaded</p>");

out.println("</body>");

out.println("</html>");

}

Create web.xml file in WEB-INF Folder project

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
	 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	 xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
	 version="3.1">
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    
    <context-param> 
   <description>Location to store uploaded file</description> 
   <param-name>file-upload</param-name> 
   <param-value>
      c:\tempp\
   </param-value> 
</context-param>
</web-app>

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"

version="3.1">

<session-config>

<session-timeout>

</session-timeout>

</session-config>

<context-param>

<description>Location to store uploaded file</description>

<param-name>file-upload</param-name>

<param-value>

c:\tempp\

</param-value>

</context-param>

</web-app>

You must create a folder name “temp” in Read More …

To write a Python program to evaluate the Fibonacci series for n terms.

January 30, 2018January 30, 2018 admin

x = 0
y = 1

n = int(input("Enter value of n"))

for i in range(n):
    z = x+y
    print(x)
    x = y
    y = z

x = 0

y = 1

n = int(input("Enter value of n"))

for i in range(n):

z = x+y

print(x)

x = y

y = z

Output Enter value of n 10 0 1 1 2 3 5 8 13 21 34

Python Program to Check Leap Year

January 30, 2018January 30, 2018 admin

A leap year is exactly divisible by 4 except for century years (years ending with 00). The century year is a leap year only if it is perfectly divisible by 400. For example,

2017 is not a leap year
1900 is a not leap year
2012 is a leap year
2000 is a leap year

2017 is not a leap year

1900 is a not leap year

2012 is a leap year

2000 is a leap year

# Python program to check if the input year is a leap year or not

year = 2000

# To get year (integer input) from the user
# year = int(input("Enter a year: "))

if (year % 4) == 0:
   if (year % 100) == 0:
       if (year % 400) == 0:
           print("{0} is a leap year".format(year))
       else:
           print("{0} is not a leap year".format(year))
   else:
       print("{0} is a leap year".format(year))
else:
   print("{0} is not a leap year".format(year))

# Python program to check if the input year is a leap year or not

year = 2000

# To get year (integer input) from the user

# year = int(input("Enter a year: "))

if (year % 4) == 0:

if (year % 100) == 0:

if (year % 400) == 0:

print("{0} is a leap year".format(year))

else:

print("{0} is not a leap year".format(year))

else:

print("{0} is a leap year".format(year))

else:

print("{0} is not a leap year".format(year))

To Write a Python program to compute the GCD or HCF of two numbers.

January 30, 2018January 30, 2018 admin

Program to find GCD or HCF of two numbers. GCD(Greatest Common Divisor) or HCF (Highest Common Factor) of two numbers is the largest number that divides both of them. Using Loops

# Python program to find the H.C.F or GCD of two input number

# define a function
def computeHCF(x, y):

# choose the smaller number
    if x > y:
        smaller = y
    else:
        smaller = x
    for i in range(1, smaller+1):
        if((x % i == 0) and (y % i == 0)):
            hcf = i
            
    return hcf

num1 = 54 
num2 = 45

# take input from the user
# num1 = int(input("Enter first number: "))
# num2 = int(input("Enter second number: "))

print("The H.C.F. of", num1,"and", num2,"is", computeHCF(num1, num2))

# Python program to find the H.C.F or GCD of two input number

# define a function

def computeHCF(x, y):

# choose the smaller number

if x > y:

smaller = y

else:

smaller = x

for i in range(1, smaller+1):

if((x % i == 0) and (y % i == 0)):

hcf = i

return hcf

num1 = 54

num2 = 45

# take input from the user

# num1 = int(input("Enter first number: "))

# num2 = int(input("Enter second number: "))

print("The H.C.F. of", num1,"and", num2,"is", computeHCF(num1, num2))

Using Euclidean Algorithm

def computeHCF(x, y):

   # This function implements the Euclidian algorithm to find H.C.F. of two numbers
   while(y):
       x, y = y, x % y

   return x

hcf = computeHCF(54, 45)

print(hcf)

def computeHCF(x, y):

# This function implements the Euclidian algorithm to find H.C.F. of two numbers

while(y):

x, y = y, x % y

return x

hcf = computeHCF(54, 45)

print(hcf)

Using Recurssion

def gcd(a,b):
    if(b==0):
        return a
    else:
        return gcd(b,a%b)
a=int(input("Enter first number:"))
b=int(input("Enter second number:"))
print (gcd(a,b))

def gcd(a,b):

if(b==0):

return a

else:

return gcd(b,a%b)

a=int(input("Enter first number:"))

b=int(input("Enter second number:"))

print (gcd(a,b))

देशभक्ति गीत 2018

January 4, 2018 admin

1 —-देखो वीर जवानों अपने, खून पे ये इल्जाम न आए मेरी जान से प्यारे, तुझको तेरा देश पुकारा जा जा भैया, जा बेटा जा मेरे यारा जा देखो वीर जवानों अपने, खून पे ये इल्जाम न आए माँ ना Read More …

होली की कहानी व होली क्यों मनाई जाती है ?

January 4, 2018 admin

होली एक ऐसा रंगबिरंगा त्योहार है, जिस हर धर्म के लोग पूरे उत्साह और मस्ती के साथ मनाते हैं। प्यार भरे रंगों से सजा यह पर्व हर धर्म, संप्रदाय, जाति के बंधन खोलकर भाई-चारे का संदेश देता है। इस दिन Read More …

Python Cheatsheet For Beginners

January 4, 2018January 10, 2018 admin

Libraries Import libraries import numpy import numpy as np Selective import from math import pi Asking for Help >>> help(str) Variables and Data Types Variable Assignment >>> x=5 >>> x 5 Calculations With Variables Sum of two variables >>> x+2 Read More …