Thursday, April 21, 2016

Java Program to convert Decimal values to Hexadecimal values

Objectives :

  • How to convert Decimal to Hexadecimal in Java?

1:  import java.util.Scanner;  
3:  public class DecimalToHexadecimal {  
5:  public static void main(String[] args) {  
7:  Scanner input = new Scanner(;  
9:  System.out.print("Enter decimal number you like: ");  
10:  int deci = input.nextInt();  
12:  System.out.println("The hexadecimal number for decimal "  
13:  + deci + " is " + convert(deci));  
14:  }  
16:  public static String convert(int decimal) {  
17:  String hex = "";  
19:  while (decimal != 0) {  
20:  int hexValue = decimal % 16;  
21:  hex = toHexadecimal(hexValue) + hex;  
22:  decimal = decimal / 16;  
23:  }  
25:  return hex;  
26:  }  
28:  public static char toHexadecimal(int hexValue) {  
29:  if (hexValue <= 9 && hexValue >= 0) {  
30:  return (char) (hexValue + '0');  
31:  } else {  
32:  return (char) (hexValue - 10 + 'A');  
33:  }  
34:  }  
35:  }  
Output :
Enter decimal number you like: 1234
The hexadecimal number for decimal 1234 is 4D2

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Monday, August 31, 2015

How to publish Android app to Google Play Store?

Objectives :
  • How to publish Android app to Google Play Store?
  • How to publish Android app to Google Play Store using Eclipse?
  • How to create keystore in Android?
  • How to zipalign an Android app?
  • How to export signed Android package?
  • How to export signed Android APK?
  • How to export signed Android app?
  • How to create signature for Android app?
  • How to compress Android app for publishing?
  • How to make an Android app ready for publishing?
This video will guide you to publish your own Android apps on Google Play through some simple steps and that too with few clicks. This small video will answer all the questions above.
The video was recorded during a Online Android Training and uploading unedited video here. The training was conducted from Doha, Qatar. If you need online training on Android or need any support, please feel free to write me at
Please feel free to share the video if you like it and do comment below. And subscribe to my YouTube channel for more video tutorials.
One can visit my main blog : for more details and tutorials.

Saturday, April 11, 2015

AutoScroll TextView in Android

Objectives :

– How to use TextView in Android?

– How to scroll Text in Android?

– How to implement Marquee Text in Android?

– How to make text scrollable in Android?
Getting Started :

1. Create a New Android Application titled as “AutoscrollTextviewDemo” with blank activity.

2. Update the layout xml with code given below.
How to do it?

Just watch the video below and follow the steps.

Friday, June 17, 2011

Writing Comments in Java

Objective :
  • How to write comments in Java?
  • How to write single line comment in Java?
  • How to write multi line comment in Java?
  • How to write documentation comment in Java?
  • What are the types of comments in Java?

Writing Comments in Java :
  • Comments are the statements which are never executed (i.e. non-executable statements).
  • Comments are often used to add notes between source code so that it becomes easy to understand & explain the function or operation of the corresponding part of source code.
  • Java Compiler doesn’t read comments; comments are simply ignored during compilation.
  • There are 3 types of comments available in Java as follows;
  1. Single Line Comment
  2. Multi Line Comment
  3. Documentation Comment

Single Line Comment :
This comment is used whenever we need to write anything in single line.

Syntax : 
//< write comment here >

Example :
//This is Single Line Comment.

Multi Line Comment :
This type of comments are used whenever we want to write detailed notes (i.e. more than one line or in multiple lines)related to source code.

Syntax :
< write comment here >

Example :  

Documentation Comment :
  • The documentation comment is used commonly to produce the javadoc for the respective program.
  • The javadoc is generally HTML, if used in project it is a set of multiple HTML files describing each java program in the corresponding project.
  • In the documentation comment we can add different notations such as author of the project or program, version, parameters required, information on results in return if any, etc.
  • To add these notations, we have ‘@’ operator.  We just need to write the required notation along with the ‘@’ operator.
  • Some javadoc tags are;
    • @author – To describe the author of the project.
    • @version – To describe the version of the project.
    • @param – To explain the parameters required to perform respective operation.
    • @return – To explain the return type of the project.

Syntax :
*< write comment/description here >

Example :  
*This is Documentation Comment.
*@author Atul Palandurkar
*@version 1.0.0

Wednesday, June 15, 2011

Shutting down 100 times faster

Hey frinds, do you want to Shut down your computer 100 times faster?

Procedure :

*Press ctrl+alt+del to open Task Manager

* Click the Shutdown Tab.

* Holding ctrl key, Press TURN OFF