1 ) For open more than one google talk at a time Go properties on google talk and >

Change "C:\Program Files\Google\Google Talk\googletalk.exe" /startmenu

•   How to  make a error Msg box in java(Syntex to Print Error Message )          

JOptionPane.showMessageDialog (frame, "Error!","An Error Message", JOptionPane.ERROR_MESSAGE);

  Centering JFrame's in java  :

1)By default, a Jframe is displayed in the upper-left corner of the screen. To display a frame
at a specified location, you can use the setLocation(x, y) method in the JFrame class. This
method places the upper-left corner of a frame at location (x, y).

The Swing API keeps improving with abstractions such as the setDefaultCloseOperation method
for the JFrame

2)      use of super to create JInternalFrames

super ("IFrame #" + (++CounterForFrameNumbers), true, // resizable

                              true,  // closable

                              true,  // maximizable

true);     // iconifiable or minimizable

Some Thiong about static :

Static Method can not access the instance variable which is not static and define outside that static method.  

 Scroll lock

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Scroll lock is a key (often with an associated status light) on most modern computer keyboards. The behavior of the key depends on the particular software in use.

The scroll lock key is a remnant from the original IBM PC keyboard. In the original design, scroll lock was intended to modify the behavior of the arrow keys. When the scroll lock mode was on, the arrow keys would scroll the contents of a text window instead of moving the cursor. In this usage, scroll lock is a modifier key like Alt and Shift (which modify the function of other keys) and, more specifically, a toggling lock key like Num Lock or Caps Lock, which have a state that persists after the key is released. Today, this particular use of scroll lock is rare. Only a few modern programs still honor this behavior, such as Microsoft Excel (in the behavior of arrows — when scroll lock is on, the selection does not move), Lotus Notes and Forté Agent. In modern GUI environments, scrolling is usually accomplished using means such as scrollbars or scroll wheels. Therefore scroll lock can be regarded as a defunct feature in almost all modern programs and operating systems; some keyboards lack scroll lock altogether.

Print screen

(often abbreviated Prt Scr, Print Scrn, Prt Scn, Prt Sc or Prnt Scrn) is a key present on most keyboards, typically situated in the same section as the break key and scroll lock key. Print screen is shared with system request. Under earlier command-line based operating systems, this caused the contents of the current screen memory buffer to be copied to the standard printer port, usually LPT1. In essence, whatever was currently on the screen when the key was pressed was printed.

Newer-generation operating systems using a graphical interface tend to copy a bitmap image of the current screen to their clipboard or comparable storage area, which can be inserted into documents as a screenshot. Some shells allow modification of the exact behavior using keys such as control.

In Microsoft Windows, pressing print screen will capture the entire screen, while pressing the alt key in combination with print screen will capture the currently selected window. The captured image can then be pasted into an editing program such as a word processor, email, or graphics software. Pressing print screen, with both the alt key and shift key depressed, turns on a high contrast mode for people with visual impairments.

Operate your Mouse using Keyboard

• Mouse to operate Keyboard

Most of us know that it is possible to operate the keyboard using mouse with the assistance of On-Screen Keyboard in Windows XP, in case your keyboard hangs and you have an urgent task to accomplish. Anyone unknown about it can try anyone of the following methods:

1) Type ‘osk’ in Run dialog box without quotes and hit Enter.

2) Navigate to All Programs –Accessories — Accessibility and select On-Screen Keyboard

Both the above methods will open up the On-Screen Keyboard as shown below.

You can click on the required keys through mouse. Even key combinations like Ctrl+Alt+Del can also be used.

• Keyboard as Mouse

There also exists a reverse method of operating mouse with the help of keyboard.

1)      Go to Control Panel, double click on Accessibility Options (if you are in Classic View).

2)      Select the Mouse tab. Check the “Use Mouse keys” checkbox and click the Settings button

3)      Check the “Use shortcut” checkbox if you wish to automatically on/off the Mouse Keys using the left Alt + left Shift + NUM LOCK

4)      Select the appropriate Top Speed and Acceleration as per your requirement.

5)      Check the “Hold down Ctrl to speed up and Shift to slow down” checkbox if you wish to speedup/slow down at different times.

6)      Select the “Use MouseKeys when NumLock is” On/Off radio button as per your wish.

7)      Check the “Show MouseKey status on screen” if you wish to display the MouseKey status in the notification area.

Click the ALT+left Scroll Bar key+NUMLOCK  and then you see this

Click on seeting and check the Use Mouse Keys Box to use.

Put the NumLock ON. You will see the mouse sign in the notification area as shown below. It means your MouseKeys are now active.