Quick OS Installation

Now, this tip will be very helpful for those who frequently install windows xp operating system. Normally OS installation takes around 40 minutes to complete, but through this trick you can now save 10-15 minutes. This simple tricks goes this way.
1. Boot through Windows XP CD.
2. After all the files are completely loaded, you get the option to select the partition. Select “c”.
3. Now Format the partition, whether it is normal or quick with NTFS or FAT
4. Once the formatting is completed, All the setup files required for installation are copied. Restart your system by pressing Enter.
Now, here begins the Simple trick to save 10-15 minutes.
5. After rebooting, you get a screen where it takes 40 minutes to complete or finalize the OS installation.
6. Now, Press SHIFT + F10 Key ->  This opens command prompt.
7. Enter “Taskmgr” at the command prompt window. This will open Task Manager.
8. Click the Process Tab, here we find a process called Setup.exe -> Right Click on Setup.exe -> Set Priority -> Select High or Above Normal. Initially it will be Normal.
Thats it, no more work to do. Relax your self and see how fast the installation process completes

Creation and deletion of folder name con:

Folders with name: CON, PRN, AUX, CLOCK$, NUL, COM1, COM2, COM3, COM4, COM5,
COM6, COM7, COM8, COM9, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, & LPT9
cant be created using Windows Explorer or Command Prompt directly! ( Try this
out.. right click on your desktop and try creating folder named "con"it changes
back to "new Folder" )

This is prevented as XP terms these folders as SYSTEM Folder Names reserved only
for the Operating System.. But there is a backdoor..(this trick is to create
system folders on XP through command prompt )

CREATION

Syntax:md \\.\\$path
Example:prompt>md \\.\\C:\con
Explanation: This would create a folder named "con" on your "C Drive"

DELETION
Syntax:rd/s \\.\\$path
Example:prompt>rd/s \\.\\C:\con
Explanation: This would remove the folder named "con"!

Note: rd(Remove Directory) command is used with "/s" switch as otherwise it
would give error that "folder is not empty"!

To Check whether anti-virus is working or not

Procedure:

1. Open your notepad or word pad or any other text editor what you have.
2. Copy the following text

X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
3. Now save the text editor file and give it a .exe extension. (Suppose virus.exe)
4. If your antivirus detect it as a virus then it is properly working.
5. If no then it is not properly working or corrupted or the validity of the antivirus has expired. So better to change the anti virus to keep your system secure from malware or virus.

How to improve on shutdown time ? Close apps automatically & quickly at shutdown tip:

Open Registry by going to START-RUN and typing REGEDIT. Navigate to HKEY_CURRENT_USER\CONTROL PANEL\DESKTOP and look for AutoEndTasks. On my computer default value is 0. Change it to 1. Thats all. Further more you can reduce the time it takes for Windows to issue kill directive to all active/hung applications. 
In doing this only constraint that you should make sure exists is that HungAppTimeout is greater than WaitToKillAppTimeout. Change the values of WaitToKillAppTimeout to say 3500 (since default value for HungAppTimeout 5000 and for WaitToKillAppTimeout is 20000)

Use a Shortcut to Local Area Network Connection Information Tip:

Here's something new in Windows XP, instead of using the command line program and typing ipconfig to get local area network information, you can try using the following shortcut:
* Click on Start, point to Connect to, and then click Show All Connections.
* Right–click the connection you want information about, and then click Status.
* In the connection Properties dialog box, click the Support tab.
* For more information, click on the Advanced tab. 

To automatically enable the status monitor each time the connection is active, in the connection Properties dialog box, select the Show icon in taskbar notification area when connected check box.

Speedup boot up sequence by defragmenting all key boot files tip:

Open Registry by going to START-RUN and typing REGEDIT. Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Dfrg\BootOptimizeFunction. In right hand panel look for Enable. Right click on it and set it 'Y' for enable. This is the way I have it set on my computer. This will help speedup boot time.

Java program for opening notepad

Coding
class demo {
public static void main(String a[]) {
Runtime r=Runtime.getRuntime();
Process p=null;
try {
p=r.exec("notepad");
}
catch (Exception e) {
System.out.println("Error executing notepad");
}
}
}