converting media files with vlc media player

Almost all of us have come across the VLC media player. However  very few of us are aware of its true potential.

It can not only  play various media files but has also got various added functionality . "Convert" is one such functionality.As such for converting files between the most commonly used media types we don't need additional software.The following video shows how to convert media in step by step fashion.

Note: don't forget to give name to the output file with appropriate extension.

operating system virtualization software

with an Operating System (i.e. os ) virtualization software we can run an os inside another os like a program.this concept not only sounds interesting but also provides us with various real life advantages. besides it also finds good use in the industry.[for information : our main operating system is called the 'Host OS' while the os which we run inside our main os with the os-virtualization-software is called 'Guest OS'].so lets see at a glance what advantages it has for us the domestic users:

• allows us gain hands-on-experience on various operating system without any worry of partitioning or formatting our hard disks.
• we can install and experiment with applications without any worry in the guest operating system as the host or native operating system of our computer will remain out of trouble.
• we can study n make changes in the system files of the operating system
• we (i.e. developers ) often develop projects which are not portable or are hard to demonstrate on other computers. as running complex projects requires installation of requisite software and a lot of configurations. these problems can be avoided with os virtualization softwares. we can develop our projects in the virtual os and later carry the entire os [with installed apps. and projects ] to other computers.all we have to do its to install the os virtualization in the target computer
  

Softwares: there are several this king of programs available. however the most popular names are:

1.	VMware Workstation: its a shareware.besides a real powerful software which supports a wide-range of guest os.it also provides a lot of tools and customization options for the guest os.i personally recommend this. torrent download here
2.	Virtual Box :(by SunMicrosystems currently owned by Oracle).its a freeware. moreover its open source.very userfriendly and fast. download here
3.	Windows Virtual PC: its also a shareware.its vendor is Microsoft Corporations.it works only if the host operating system is windows.download here

convert printable documents to other formats

Universal Document Converter
Universal Document Converter is the most complete solution for the conversion of documents into PDF, JPEG, TIFF or other graphical files. The underlying basis of the program is the technology of virtual printing. As a result, exporting documents into a chosen format is not any more complicated than printing on a desktop printer.

Fields of Application

Document Sharing and Archiving

Exchanging documents in the Adobe PDF format protects you and your clients from any technical difficulties.

Presentation Creation

Documents converted to JPEG or PNG graphic formats can be easily inserted into your PowerPoint presentations without any problems.

Web Publishing

Publishing presentation materials and product catalogs in the Adobe PDF format offers clients all needed information in a reliable and change-protected form.

Preparing Layouts for the Printshop

Converting documents into the TIFF format guarantees high printing quality and simplifies work with printshops and publishers.

Corporate Workflow System Deployment

Universal Document Converter reduces your expenses on the development of a corporate workflow system.

Downloads : 1. torrent download(full version)
2. download trial from its site

complete uninstallation of softwares [even from registry]]

Problems:

• problems created due to installation of a software presists on its uninstallation
• computer performs slow
• if initial installation of a software fails due to some reason then it cant be reinstalled later
  

Reason : now you must be thinking " why the hell , do we need to an uninstallation-software to remove an installed software , when we can directly remove it from the Control Panel? "the one word-answer for the above question is the " Registry ".Stronger the registry , beter the performance will be.

Explanation : "Registry" is the back-bone of the windows operating system which stores every policy,every license, every attribute related to hardware & software. Its just more than a mere database.For every click that we make Windows first consults the registry ,checks all policies and licences and than generates a response.

Thus when we install a software the O.S automatically creates registry settings against it . In case of certain Software these registry settings are left behind in the machine . This may lead to several problems like :1. slower response time of a machine 'coz presence of too many unimportant keys. 2.had there been problems with initial installation of a software , the problems persist even on reinstallation [as previsous registry settings are implemented automatically].[note: not all software left behind their registry settings on un-installation. Some of them do. It completely depends upon the developer. Coz not all developers love to wash dishes after having food]

Solution: these software specific settings can be removed manually. but thats not only complicated but can result in fatal-consequences if not done properly.So thats not recommended.There are various uninstallation-software available in market which can help you to overcome this problem with ease.Using them to uninstall software ,also ensures removal of unimportant registry settings.I personally recommend :

Revo Uninstaller Pro

	Features : real time installation monitor Forced uninstall Scanning for left-overs Multilevel-backup system Junk file cleaner Evidence remover Windows cleaner Autorun manager Unrecoverable-delete

Few other uninstallation-programs are:

Advanced Uninstaller Pro	Softonic's top uninstall download
Your Uninstaller! Pro	very easy to use . with drag-n-drop uninstall utility
Easy Uninstaller	performs multiple uninstall. just line then & watch them uninstall
Zsoft Uninstaller	seeks out remnants of uninstalled programs in the registry
Magic Utilities	variety of utilities including uninstall and process-killer
Rogue Remover	removes hard to find malwares such as trojans and adwares

trick to obtain object of type interface in java

this concept makes java so scalable and newer vesions of JDK [java development kit] are incorporated with new functionality without messing with the previous packages and classes using this.

in fact this is one of the key concepts upon which the JDK is built.in recommends use of Interfaces on to of hierachy.Thus:
Interfaces -----> implementing classes------> sub-classes

To understand this concept lets take an example :-
in JDBC [java database connectivity] we write the following line of code to create a connection:

Connection con = DriverManager.getConnection( "jdbcurl", "username" , "password") ;

from the above code it can be well understood that ' DriverManager ' is a class which has a static method getConnection() [which takes 3 arguments] and returns an object of type Connection.But ' Connection ' is an interface in java.So how can it ever have an object ?
Problem :- Interfaces cant have objects since they contain atleast one abstract method. So how does ' Connection ' Interface have an object [i.e. ' con ' here] ?

Solution[Concept behind] :- we know once we have the appropriate object, then using any method is not a problem.But how to obtain object of Interface, coz dats not possible. Thus to obtain objects of type Interface the following trick is deployed

interface Interface
{
public void mymethod(); //abstract method without body
}
class B implements Interface
{
public void mymethod() //giving body to the method
{
System.out.println("Hello Geeks");
}
}

class A
{
public Interface mymethod2() //notice the return type of this method
{
Interface itr=new B(); //here is the juice of the program
//itr is an object of type Interface with content of class B
return itr;
}
}
public class InterfaceProject
{
public static void main(String[] args)
{
A aobj=new A();
Interface interface_obj=aobj.mymethod2(); //thus creating object of type interface
interface_obj.mymethod();
//finally mymethod() is called with interface_obj
}
}

similar trick is found in jdk at various instances: for example ' Servlet ' is an interface having certain concrete and certain abstract methods. this interface is implemented by classes like HttpServlet class and GenericServlet class.These classes give their own implementation to the methods defined abstract in the ' Servlet ' interface.

one should also understand that interface-object and object of type interface are not the same things.the former is not possible while the later is.

cracking BIOS password

PROCEDURE:- open the motherboard battery and then place it again in its place.this removes the existing password.

its really easy to do that but the working
mechanism is important to understand !

CONCEPT BEHIND:- We know 1.RAM(i.e the main memory) is volatile. whereas 2.ROM(i.e Read Only Memory) is a non-volatile memory and we cant write anything to it.the bios program is embedded in the ROM-chip by the motherboard manufacturing vendor.but if ROM is truly a read Only Memory then how can it store the customized bios settings (like boot device priority, bios date-&-time,bios password,etc.) ?And if ROM is not the place then where these settings are saved (because that memory-space has to be writable as these settings are changeable) ?



these settings are actually stored in a volatile memory chip present within the motherboard-called CMOS [Complementary metal oxide semiconductor] .since this CMOS is writable, its volatile too. As such once the power goes off ,it will also loose all its data. that's why its kept alive with the help of the mother-board battery power.

Therefore on taking out the mother-board battery the custom-bios-configurations are lost from the CMOS and the motherboard is reset

create driver backups from already installed drivers

WHAT IS DRIVER SOFTWARE: in simple language they are a special category of software which integrate/link the hardware to the operating system.without them either the hardware wont be recognized properly by the o.s. or it malfunctions. as such u may not get the optimum performance out of your installed hardware.

that is why nearly every hardware comes with a driver-disc which are operating-system-specific.in case of computers (windows users) some drivers are o.s. inbuilt. these inbuilt drivers are thus very generic drivers from the o.s. manufacturing vendor and not from the hardware vendor. hence these are not very hardware specific. so its always recommended to install drivers provided by hardware manufacturing vendor to get the maximum performance.
[ that is why Windows 7 recognizes literally everything because of its inbuilt driver support. ]

PROBLEM : suppose u have a running system. but u have lost the driver disc of various hardware [ like NIC-card driver, sound-driver, display-driver, motherboard-driver,etc.].n now your system is having problem but u cant format it because of post-format-hardware-malfunction fear[as u have lost the driver-discs and cant grab the appropriate drivers for whatsoever reason]. what to do now?

SOLUTION: in these cases the following 2 software can help you to get over the problem.these are powerful driver-manager software for windows that can backup,restore,search and update your drivers with couple of mouse clicks

Driver Magician	Driver Genius
CHIEF FEATURES:- 1.Back up device drivers of your computer in four modes. 2.Restore device drivers from backup in one mouse click. 3.Update device drivers of your PC to improve system performance and stability. 4. Detect unknown devices. 5.Clone all drivers to an auto-setup package (.exe), so you can restore drivers without installing Driver Magician.	CHIEF FEATURES:- 1.Quickly backup device drivers for your computer 2.Install multiple drivers with a single click. 3.Enhanced driver detection and faster download speed by more reliable New Driver Download Manager 4.Ensure your drivers are always up-to-date by Driver scan scheduler. 5.Remove invalid or useless drivers, improve system performance and stability.

[ WITH THESE SOFTWARE YOU CAN ALSO VIEW VARIOUS TECHNICAL DETAILS & SPECIFICATIONS OF THE DRIVERS PRESENT IN YOUR SYSTEM ]

fix any locked-out/unbootable windows system

in our everyday life we come across systems which are locked-out or unbootable. there may be numerous reasons behind this.some of them are:
1.user accounts have passwords which are lost/forgotten
2.boot files have got corrupted as such booting fails or system restarts.
3.some of the core system32 files have been corrupted by virus infection
4.windows administrator password is lost
5.system can not be restored or restoration doesnt solve the problem
and many more

But irrespective of these reasons we need to make the system up and running or at least boot it to backup all necessary files from hard-disk. fortunately for all these problems there is a single solution called MSDaRT[Microsoft Diagnostic and Recovery Toolkit] .it comes in the form of a bootable disc. u just have put it in the cd/dvd drive and boot the machine using cd/dvd drive. once u do that ,u will be shown a list of operating systems present on your machine. here u have to select the one you want to repair and follow wizard steps provided.MSDaRT comes with some very powerful features as listed below.you can even reset the admin password with it.

MSDaRT[Microsoft Diagnostic and Recovery Toolkit]

Microsoft Diagnostics and Recovery Toolset is a complete suite of powerful and versatile tools that allow you to repair unbootable or locked-out systems, restore lost data, and diagnose system and network issues while the system is safely offline. Microsoft Diagnostics and Recovery Toolset includes the following tools:

* Emergency Repair Disk (ERD) Commander	* Disk Commander Wizard
* ERD Commander Boot Media Wizard	* Command Line
* ERD Help	* ERD Explorer
* File Search	* Notepad
* Unzip	* Chkdsk
* Windows Shell	* Crash Analyzer Wizard
* Disk Wipe	*System Restore Wizard
* ERD Registry Editor	* File Restore
* Hotfix Uninstall Wizard	* Locksmith Wizard
* Solution Wizard	* Solution Wizard
* Autoruns	* Disk Management
* Event Viewer	* Services and Drivers
* System Information	* File Sharing
* Map Network Drive	* TCP/IP Configuration

Supported platforms:
* Windows XP (x86,x64) both 32 & 64 bit systems
* Windows Vista (x86,x64) both 32 & 64 bit systems
* Windows 7 (x86,x64) both 32 & 64 bit systems

create a file/folder with no name

1.select any file/folder

2.right click on it and select rename (or you can select the file and then press F2)

3.press and hold "Alt" key. While holding Alt key type '0160' from numpad [notice: this trick doesn't work if press the mentioned number using number keys which are just above the alphabets as they have a different key-value ].

4.press enter/return key , and your nameless file is created.
[note: we all know that every file/folder should have a name 'coz that forms its basic identity. so this topic itself seems like violation of that rule. but actually its not . here the name of the file is actually set to a "space character". n that's why its name is not visible though it certainly has got a name]

now to create another nameless file/folder at the same location:
a->select the file and press F2.

b->hold 'Alt' key and type '0610' from numpad

c->release the Alt key.now without anything else, press and hold the 'Alt ' key again and type '0160' form numpad

4.press enter/return key and a second nameless file/folder is created.
[we ll know that there cant be two files/folders with same name at the same location. here too that rule is obeyed.here we have set the file/folder name to 2 'space-characters'. similarly you can repeat step-c as many times you want {and still all the file/folder will continue to seem nameless}]

hide/unhide a drive-partition from console

this tweak is particularly for windows systems and has been personally tested by me on XP ,Vista and Windows 7.its pretty simple yet interesting.this mischief if done on other's computer, can drive the computer owner nuts to figure it out.there is nothing to be afraid to try this as it is just temporary hiding of a partition while all its contents remain the same.(still i'l recommend you to not to try this on a partition in which you have installed applications).

Steps:-
1.Go to Start-----Run------type "diskpart"
(and hit the enter/return key)This will open a console window in which you can use various diskpart utilities with the help of commands[here you can enter "help" and find more about diskpart commands. to know even more about a particular command enter "help ". i.e. "help format"]

2.type "list volume"
and hit enter/return. this will give details of all drives present on your computer.

3.type "select volume [vol_number] "
(for example if my partition(H:) has got a volume_number=3, then to hide this partition i have to first select it typing "select volume 3")

4.finally type "remove letter [vol_letter] "
(as for example "remove letter H").now if we close the console window and restart the computer that particular drive-partition wouldn't appear

Now to unhide the partition

follow steps 1 to 3 as mentioned before to select a partition/volume (as for here it would be the volume that we have hidden earlier). then step 4 will be:

4.type "assign letter [drive_letter]"
example "assign letter M". this will make the partition reappear but with letter M:\ this time.it could have been earlier drive_alphabet too.

[ notice that this tweak can be effectively used to change drive-alphabet too ]

increase torrent download speed

Simplest tips to increase your torrent download speed:

1.while selecting torrents for downloading ,select ones with greater number of seeds and peers:greater the number of seeds and peers , greater will be the availability and hence you'l get greater average download speed.

2.more the trakers ,more will be the download rate:each torrent is associated with a fixed number of trackers. try to add all the associated trackers.


3.set the maximum-upload rate=1kbps:this can be done by 1. open your torrent application. 2.right click on any torrent present in the que 3.then select "Properties" 4.then set the "maximum upload rate"=1kbps

4.create a firewall-exception rule for the torrent application: for this Windows-7 users click Here, while Windows-XP users click Here .other O.S. users are recommended to take the help of Google (type -create firewall exception rule + name of ur operating system).this will give you o.s. specific steps

5.port-forwarding: your torrent application listens to a particular logical port and it is over this port that it receives all the data.this logical port address should be "port-forwarded" to unblock it.generally certain o.s. processes keep monitoring this port if its not forwarded.the steps to obtain this port address are: 1.open ur torrent application(like utorrent). 2.open options------preferences--------connections. 3.u'l get the address here(i.e the random port number)

now Windows-XP users click Here while Windows-7 users click Here for port-forwarding related instructions.

how to download using torrent

[Step-1.Download and Install torrent ]: in case u don't know how to install torrent-downloaders and download torrent with them then here's a quick recap.There are several torrent downloaders like Bittorrent ,uTorrent ,vuze,etc. n you can choose anyone of them.my tutorials are based on utorrent .[in case you are confused about which downloader to use, then you see the review Here]

[Step-2.downloading your stuff using the torrent-downloader]:in this tutorial files are being downloaded from Mininova.org but it can be any torrent providing site(whether free or membership-based or paid-torrent sites)

top 5 Java IDE

Java applications have earned their reputation for being highly scalable and platform-independent .Since java(i.e. the java_development_kit or JDK) comes under the category of freewares and distributed widely as an open-source product hence the support available to it is also greater as compared to other programming languages.As such there are numerous IDEs (Integrated Development Enviornment) available using which u can develop your application.
I have been developing java applications for quite sometime and have used a number of IDEs over time. Here's how I rate them:

1.MyEclipse
advantages: 1.lots of plugins for enterprise application development(JSF,JMS,EJB,Struts) 2.very little configuration required 3.almost everything is included within this one installer. all round solution 4.very well documented.lots of help available within it 5.a real smart intellisence. 6.design modes available for configuration files
disadvantages: 1.its not a freeware.one needs to buy n its expensive 2.system requirement is comparatively higher than other IDEs (min 1gb RAM required)

2. NetBeans
advantages:1.freeware. 2.very well documented and lots of support(both within itself & in the internet) 3.good number of plugins
disadvantages:1.UI looks crappy (metal), icons suck. 2.no refactoring or refactoring templates (try/catch, rename field, etc...). 3.no JSTL-EL support in syntax highlighting/code completion. 4.cannot wrap arbitrary text in editor.

3. Eclipse
advantages:1.its a freeware 2.lots of plugins available 3.highly scalable
disadvantages:1.very little inbuilt support 2.though its highly scalable.yet configuring them into projects can be a problem

4. IBM RAD [Rational Application Developer] & JDeveloper[ by Oracle] :i rate them equal because both has got their own pros n cons. i have used both of them. they are highly used by various corporate group because they come with real powerful websevers which gives a number of customization and services.They are packed with features.

6. BlueJ
advantages:1.its a freeware. 2.very small in size as such easy to transfer the software(one can even mail) 3. the UI is very simple [probably the best IDE for school kids] 4.good for core java applications (like applets)
disadvantages: 1.has got very little functionality 2.only core java aplications can be developed 3.plugin support is very low. 4.the typing intellisence is not very smart

run sotwares after they have expired

These days most of the important utility software come under the category of "Sharewares" (i.e. the vendor/manufacturer of the software permits you to download and use the software for free only for a particular period of time). This is interval of time after which these software fail to work is to work is called "trial period".

This allows the vendor not only to advertise its products but also provide hand-on experience to the users.

but that's fine.the problem starts once the software has expired.so how to run them thereafter???

well RunAsDate one such impotant tool which allows you to run applications with back-date settings. thus select any valid date after installation-date of the shareware which has expired.so download this great tool and learn more about it here : RunAsDate