Lap Around the Windows Azure Platform

Cloud Computing – A Crash Course for Architects

import java.util.*;

public class OddEvenThread{
 
 public static void main(String []str){
 
  long no; 
  System.out.println("Enter a no:");
  Scanner sc = new Scanner(System.in);
  no = sc.nextLong();
  OddEven oe = new OddEven(no);
 }
 
}

class OddEven implements Runnable{
 private Thread t=null;
 private long _no;
 
 long getNo(){
  return this._no;
 }
 
 OddEven(long no){
  t = new Thread(this);
  this._no=no;
  t.start();
 }
 
 public void run(){
  if(_no%2==0){
   System.out.println("No is Even");
  }
  else{
   System.out.println("No is Odd");
  }
 }
}

Difference between Recursion and Iteration

1) Recursive function – is a function that is partially defined by itself whereas Iterative functions – are loop based imperative repetitions of a process

2) Recursion Uses selection structure whereas Iteration uses repitation structure

3) An infinite loop occurs with iteration if the loop-continuation test never becomes false whereas infinite recursion occurs if the recursion step does not reduce the problem in a manner that converges on the base case.

4) Iteration terminates when the loop-continuation condition fails whereas recursion terminates when a base case is recognized

5) When using recursion multiple activation records are created on stack for each call when in iteration everything is done in one activation record

6) Recursion is usually slower then iteration due to overhead of maintaining stack whereas iteration does not use stack so it's faster than recursion

7) Recursion uses more memory than iteration

8) Infinite recursion can crash the system whereas infinite looping uses cpu

cycles repeatedly

9) Recursion makes code smaller and iteration makes code longer

How to remove navbar from blog

Step1. Log in to Blogger

Step2. Click on Design

Step3. Go to Edit HTML tab

Step4. Under Edit HTML section find following section of code

-----------------------------------------------
Blogger Template Style
Name: Rounders
Designer: Elinor Finder
URL: www.malhar2010.blogspot.com
Date: 27 Feb 2010
Updated by: Blogger Team
----------------------------------------------- */

Step5. Paste the following snippet
#navbar-iframe {
display: none !important;
}

Creating executable jar file in 3 easy steps

Jar stands for Java archive. It's nothing but a compressed zip file which contains all files and folders related to your java program whether it is image, package, class file or anything else.It helps programmer pack file in one file and reduce the size of project.A jar file can be executable.

Jar file can be created using a utility comes with jsdk called jar. You can find it in <Your Java sdk path>\bin folder as jar.exe in Windows.

Here is simple steps to create a jar file of your java project.

Suppose i have a source file called P3.java.

Now follow steps given below :

Step 1. Compile your java source into .class file. My class file is P3.class

Step 2. Now create a file called prg.MF known as manifest file that contains following entries using notepad.
    Created-By: 1.2 (Sun Microsystems Inc.)
    Manifest-Version: 1.0
    Main-Class: P3

    In above entries first line tells the version and the vendor of Java implementation.
    Second line indicates that our manifest file conforms to the specification version 1.0
    Third line describes a name of class file in which main function resides.

Step3.  Now the third and final step. Go to command prompt and execute jar utility as described below.
    jar cvfm Prog.jar prg.MF *
   
    Here c,v,f,m are different options of jar utility.
    c - Creates a new file
    v - Generates verbose output to screen (You can omit this option)
    f - Specifies archive file name
    m - Includes information from our own manifest file

    Prog.jar is our archive file name.You can specify any name.
    prog.MF is a manifest file created by us.
    * indicates that all file should be included in archive.
   
Check folder for generated Prog.jar and execute it.
   

Program that will demonstrate the use of object serialization with different write methods

/* Program : 1
   Create an application that will demonstrate the use of object serialization with different write methods
   Developed by : Malhar Vora
   Developed on :6-11-2010
   Development Status : Completed and tested
   Email     : vbmade2000@gmail.com
   WebSite   : www.malhar2010.blogspot.com
********************************************************************************/
import java.io.*;

public class P1 
{
 
 public static void main(String []str)
 {
  
  ReadWriteData rwdata = new ReadWriteData();
  rwdata.writeData("test1.txt");
  rwdata.readData("test1.txt"); 
 
 
 }

}

class ReadWriteData
{
 public void writeData(String fname)
 {
  FileOutputStream fos = null;
  ObjectOutputStream oos = null;
  
  try{
  
    fos = new FileOutputStream(new File(fname));
    oos = new ObjectOutputStream(fos);
    
    oos.writeInt(10);
    oos.writeUTF("Hello World");
  
  
  }
  catch(Exception e)
  {
   
  }
  finally
  {
   try
   {
    oos.close();
    fos.close();
   }
   catch(Exception e)
   {
    ;
   }
  }
  
 }
 
 public void readData(String fname)
 {
  FileInputStream fis = null;
  ObjectInputStream ois = null;
  
  try{
  
    fis = new FileInputStream(new File(fname));
    ois = new ObjectInputStream(fis);
    
    System.out.println("Integer " + ois.readInt());
    System.out.println("String " + ois.readUTF());
  
  
  }
  catch(Exception e)
  {
   ;
  }
  finally
  {
   try
   {
    ois.close();
    fis.close();
   }
   catch(Exception e)
   {
    ;
   }
  }
  
 }
 
 

}