Wednesday, June 20, 2007

How to add External Drive

I got a new external drive for my laptop this weekend. I just connected the drive to the laptop using the USB port and windows XP recognized the seagate external hard drive. This was good to observe. However after that I was not able to view any new drive created. I wonder how would I transfer my data onto the disk now. I spent sometime over it and managed to do that. I thought it would be useful for other folks to avoid spending that extra time. So I thought of listing down the steps required. Here you go..

Once you see that the drive is identified by the OS, and you can see icon in your system tray which says external device selected,
  • GO to My Computer
  • Right click on My Computer
  • Go to Manage Tab
  • Go to disk management
  • You can now see the added external disk partition available witout anything.
  • Just right click inside that partition space and say "mount".
  • This will change the status for the external disk to "basic" and "online".
  • Then once you have mounted the drive, again right click and say format.
  • Once you format the drive it will ask you for the drive letter and once the formatting is done your drive would be visible for use.

Enjoy more space

Wednesday, May 30, 2007

Surface Computing

Hi All,

Look at this amazing new computing technique "Surface Computing" by Microsoft.

Monday, May 28, 2007

10 Useful Utility Softwares

Some of the useful utility software's that really helped me when needed are :

1. Free Undelete
  • Web:-
  • Description:-In case of accidental deletion of files on a NTFS (used by default in Windows XP, 2000 and NT), FAT32 or FAT16 file systems FreeUndelete is the utility to help.
2. Easy Cleaner
  • Web:-
  • Description:-Easy to use registry cleaner. It was a freeware when I downloaded. However now you might have to pay the initial fees for accessing products on the site.
3. cygwin
Description:-If you need to use unix commands over windows, a really nice utility.

Rest still to come....

securing java

Tuesday, May 22, 2007

closeable and flushable interfaces in Java 5

Java 5 has two separate interfaces in package.

  • Closeable
    • A Closeable is a source or destination of data that can be closed. The close method is invoked to release resources that the object is holding (such as open files).
  • Flushable
    • A Flushable is a destination of data that can be flushed. The flush method is invoked to write any buffered output to the underlying stream.

Monday, May 21, 2007

Java : Final is not constant ?

Java doesn’t have anything like C++ const. You might think that final is like const, but it’s not:
  • A final variable in Java can be assigned to only once, but if the variable is a reference-type, you can still change what it refers to. Fun!
  • A const variable in C++ can be assigned to only once, where it’s declared, and nothing is allowed to change about the value, whether it’s an object or not. Now that is a nice feature!
This is what Java Language Specification talks about the final variable.

A variable can be declared final. A final variable may only be assigned to once. It is a compile time error if a final variable is assigned to unless it is definitely unassigned (§16) immediately prior to the assignment.

A blank final is a final variable whose declaration lacks an initializer.

Once a final variable has been assigned, it always contains the same value. If a final variable holds a reference to an object, then the state of the object may be changed by operations on the object, but the variable will always refer to the same object. This applies also to arrays, because arrays are objects; if a final variable holds a reference to an array, then the components of the array may be changed by operations on the array, but the variable will always refer to the same array.

Declaring a variable final can serve as useful documentation that its value will not change and can help avoid programming errors.

In the example:

class Point {
int x, y;
int useCount;
Point(int x, int y) { this.x = x; this.y = y; }
final static Point origin = new Point(0, 0);
the class Point declares a final class variable origin. The origin variable holds a reference to an object that is an instance of class Point whose coordinates are (0, 0). The value of the variable Point.origin can never change, so it always refers to the same Point object, the one created by its initializer. However, an operation on this Point object might change its state-for example, modifying its useCount or even, misleadingly, its x or y coordinate.

Friday, May 18, 2007

MS Calendar as Google Calendar Events

Just try to forward your Outlook Calendar events to gmail and get surprised. Google automatically converts that to google calendar event and you can view that on your google calendar.