Troubleshooter

Java interview questions and answers

2010-12-01T22:49:00.001+05:30

What is garbage collection? What is the process that is responsible for doing that in java? - Reclaiming the unused memory by the invalid objects. Garbage collector is responsible for this process
What kind of thread is the Garbage collector thread? - It is a daemon thread.
What is a daemon thread? - These are the threads which can run without user intervention. The JVM can exit when there are daemon thread by killing them abruptly.
How will you invoke any external process in Java? - Runtime.getRuntime().exec(….)
What is the finalize method do? - Before the invalid objects get garbage collected, the JVM give the user a chance to clean up some resources before it got garbage collected.
What is mutable object and immutable object? - If a object value is changeable then we can call it as Mutable object. (Ex., StringBuffer, …) If you are not allowed to change the value of an object, it is immutable object. (Ex., String, Integer, Float, …)
What is the basic difference between string and stringbuffer object? - String is an immutable object. StringBuffer is a mutable object.
What is the purpose of Void class? - The Void class is an uninstantiable placeholder class to hold a reference to the Class object representing the primitive Java type void.
What is reflection? - Reflection allows programmatic access to information about the fields, methods and constructors of loaded classes, and the use reflected fields, methods, and constructors to operate on their underlying counterparts on objects, within security restrictions.
What is the base class for Error and Exception? - Throwable
What is the byte range? -128 to 127
What is the implementation of destroy method in java.. is it native or java code? - This method is not implemented.
What is a package? - To group set of classes into a single unit is known as packaging. Packages provides wide namespace ability.
What are the approaches that you will follow for making a program very efficient? - By avoiding too much of static methods avoiding the excessive and unnecessary use of synchronized methods Selection of related classes based on the application (meaning synchronized classes for multiuser and non-synchronized classes for single user) Usage of appropriate design patterns Using cache methodologies for remote invocations Avoiding creation of variables within a loop and lot more.
What is a DatabaseMetaData? - Comprehensive information about the database as a whole.
What is Locale? - A Locale object represents a specific geographical, political, or cultural region
How will you load a specific locale? - Using ResourceBundle.getBundle(…);
What is JIT and its use? - Really, just a very fast compiler… In this incarnation, pretty much a one-pass compiler — no offline computations. So you can’t look at the whole method, rank the expressions according to which ones are re-used the most, and then generate code. In theory terms, it’s an on-line problem.
Is JVM a compiler or an interpreter? - Interpreter
When you think about optimization, what is the best way to findout the time/memory consuming process? - Using profiler
What is the purpose of assert keyword used in JDK1.4.x? - In order to validate certain expressions. It effectively replaces the if block and automatically throws the AssertionError on failure. This keyword should be used for the critical arguments. Meaning, without that the method does nothing.
How will you get the platform dependent values like line separator, path separator, etc., ? - Using Sytem.getProperty(…) (line.separator, path.separator, …)
What is skeleton and stub? what is the purpose of those? - Stub is a client side representation of the server, which takes care of communicating with the remote server. Skeleton is the server side representation. But that is no more in use… it is deprecated long before in JDK.
What is the final keyword denotes? - final keyword denotes that it is the final implementation for that method or variable or class. You can’t override that method/variable/class any more.
What is the significance of ListIterator? - You can iterate back and forth.
What is the major difference between LinkedList and ArrayList? - LinkedList are meant for sequential accessing. ArrayList are meant for random accessing.
What is nested class? - If all the methods of a inner class is static then it is a nested class.
What is inner class? - If the methods of the inner class can only be accessed via the instance of the inner class, then it is called inner class.
What is composition? - Holding the reference of the other class within some other class is known as composition.
What is aggregation? - It is a special type of composition. If you expose all the methods of a composite class and route the method call to the composite method through its reference, then it is called aggregation.
What are the methods in Object? - clone, equals, wait, finalize, getClass, hashCode, notify, notifyAll, toString
Can you instantiate the Math class? - You can’t instantiate the math class. All the methods in this class are static. And the constructor is not public.
What is singleton? - It is one of the design pattern. This falls in the creational pattern of the design pattern. There will be only one instance for that entire JVM. You can achieve this by having the private constructor in the class. For eg., public class Singleton { private static final Singleton s = new Singleton(); private Singleton() { } public static Singleton getInstance() { return s; } // all non static methods … }
What is DriverManager? - The basic service to manage set of JDBC drivers.
What is Class.forName() does and how it is useful? - It loads the class into the ClassLoader. It returns the Class. Using that you can get the instance ( “class-instance”.newInstance() ).

System Mechanic Professional 10.0.0.76

2010-11-16T19:10:00.001+05:30

System Mechanic Tool description

System Mechanic Professional is five complete products in one integrated package: everything you need to keep your PC safe, fast, and error-free

World-Class Internet Security:
     · Block spyware and other dangerous software
     · Shield your PC from viruses, worms, and Trojans
     · Defend against hackers and identity thieves
     · Prevent unauthorized access and remote attacks
     · Repair dangerous Windows security vulnerabilities
Total PC Optimization, Repair and Maintenance:
     · Complete one-click repair, acceleration, and clean-up
     · Streamline Windows by removing system and Internet clutter
     · Fix annoying errors and prevent them in the future
     · Increase system and Internet performance up to 300%
     · Optimize settings for maximum speed and stability
     · Automatic care provides hassle-free on-going maintenance

Developer : iolo technologies
License / Price : Shareware / Trial

Crack : Rapidshare | Megaupload [Note: This cracks/patches are not developed by our team, and Piracy of software is illegal, Download at your own Risk]
Size / OS : ~ 69MB with activator / Windows All
Category : System | Maintenance | Tweak
Download Link : Rapidshare

Screen Shot :

1More Screen Shoot

USB Virus/Malicious File Detector Tool

2010-11-16T05:10:00.001+05:30

USB Virus / Malicious File Detector Tool description

Detecting the Malicious Script files & Autorun.inf file present in the Removal Disk

This tool is very much useful if you think your system is been attacked or loaded with malicious files or virus which comes through the USB drives.
It detects the USB drives connected to the system, and then it displays you the list of malicious files and the autorun.inf file if it is present in the removal disk.

Developer : Aryanz001 (balamurugan)
License / Price : Freeware / FREE
Size / OS : 190 MB / Windows All
Category : System | Security
Download Link : Rapidshare [ Part 1 || Part 2 || Part 3 || Part 4 ]

Megaupload [ Part 1 || Part 2 || Part 3 || Part 4 ]

trbl-wrdprs Tags: system | software | security | windows

Screen Shot : [Not Available Right Now]

Secure Folder 3.1.0.0

2010-11-13T21:04:00.001+05:30

Secure Folder description - Secure your folders with this tool.

Secure Folder is a simple, tiny program developed to help you password secure your folders with just a few clicks. The secured folders cannot be deleted, renamed, moved, copied, modified, accessed.

Here are some key features of "Secure Folder":
      · Unlimited number of folders can be protected at the same time.
      · Intuitive & easy-to-use interface.
      · Implements 256-bit AES (Rijndael) algorithm to encrypt your private files.
7 protection mode available:
      · "Lock"
      · "Hide"
      · "Hide & Lock"
      · "Encrypt"
      · "Encrypt & Lock"
      · "Hide & Encrypt"
      · "Hide + Encrypt + Lock"
      · Effective password protection while running program.
      · Clears records of recently accessed documents.
      · Removing or uninstalling will not uncover locked folders.
      · Windows Explorer integration.
      · Supports Drag & Drop.

Developer : Subin Ninan
License / Price : Freeware / FREE
Size / OS : 184 KB / Windows XP / Vista / 7
Last Updated : November 13th, 2010, 11:41 UTC
Category : System | Security
Download Link : Rapidshare | Megaupload

Troubleshooter Tags: windows | system | security | downloads | software

ScreenShot:

System Information Gathering Tool 1.2.0

2010-11-13T19:52:00.001+05:30

System Information Gathering Tool description

Gather system information with this application.

System Information Gathering Tool is a handy, easy to use tool specially designed to offer users a simple way to gather information from a remote / local system.
It consists of the application and an XML-based settings file. When deployed to a remote computer, any user with appropriate permissions can run the application to generate information important to troubleshooting in your enterprise.

Developer : John Landers
License / Price : Freeware / FREE
Size / OS : 30 KB / Windows All
Last Updated : November 13th, 2010, 11:52 UTC
Category : System | System Info
Download Link : Rapidshare | Megaupload

Troubleshooter Tags: windows | software | download | system tool

Screen Shot :

Software Updates

2010-11-13T18:56:00.002+05:30

“Software Updates” trlbshtr-aryanz001 : 13Nov2010

From today[13Nov2010], this blog site will be updating upcoming software's and the review of the software as well as Trial version and the Link to the Crack ‘ll be shared [note: crack and serials are not developed by the author of this blog]

So visit, regularly even bookmark this blog and get updated frequently.
Share the post with others so that every one can make use of it.

Proud to be at SRM RAMAPURAM

2010-02-17T13:57:00.002+05:30

Majesty 11 Talks

"Its a matter of great shame for all the students of all departments
of SRM RAMAPURAM campus that, we proved every one, that we are not united. We
our-self showed the world that we have thousands of problems in-between
us. Hitting students physically showed that we are Humans with no
feelings at all.
Making students get admitted in ICU at hospital, beating them
physically and damaging the college and public property are all that
we have learned from our parents"
Great job done..."

Proud to be at SRM RAMAPURAM

Forwarded message from some one named Majesty,

Centre to derecognize 44 deemed universities

2010-01-18T22:43:00.001+05:30

Centre to derecognize 44 deemed universities

New Delhi, Jan 18, 2010: The Centre today told the Supreme Court that it has decided to withdraw the "deemed" status to 44 universities in the country alleging these were being run as family fiefdoms rather than on academic considerations.

The decision to move the apex court follows a government study on 126 deemed universities across the country.

According to the Centre, most of the 44 erring deemed universities were offering post-graduate and undergraduate courses that are "fragmented with concocted nomenclatures" and seats "disporortionately" increased beyond the actual intake capacity.

While 38 deemed universities were found to doing a good job , 44 others have been given three years to improve.

The remaining 44 were found completely unfit.

The list includes the Devraj Urs University in Karnataka, DY Patil University in Maharashtra, the Manav Rachna Institute in Gurgaon and the Savita Institute and Vinayaka Mission in Tamil Nadu.

Union Human Resource Development Minister Kapil Sibal has already got a legal opinion from the Solicitor General Gopal Subramaniam on the deemed university issue.

Lawyer Viplav Sharma had filed public interest litigation in 2006 in the Supreme Court seeking regulation of deemed universities in the country.

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Happy X-Mas & 2k10 - Final Design

2009-12-24T23:51:00.003+05:30

Well hey Every one this is my last desing for the Tata DOCOMO Merchandise Contest. But what to do.. still this image is still in Pending for review. so i'm posting it in my blog. friends..

Wishing u Happy Christmas and Happy 2k10.

My remaining images gallery Click here

TATA DOCOMO - Merchandise Contest

2009-12-22T03:00:00.006+05:30

Hey Visiters,
Just visit the following link and Rate the image * Do it Before 25th DEC 09
Click here To rate the Design.
the sample of the image is shown below

Need to Check out complete Design Gallery ClickHere.

Paranormal Activity

2009-12-19T16:52:00.002+05:30

Hey Every one check this video. Have you saw the movie Paranormal Activity. this video link shows you an paranormal activity happen in real life.. me and my friend were in our class room and we captured this video..

Well Now Back Again For Blogging

2009-12-12T05:43:00.002+05:30

Hey Friends,
After long time i've returned for blogging once again well.. i'll start blogging sooner.. wait for my blog. have a wonderful day. ;)

Create Animated Themes

2007-06-07T20:49:00.000+05:30

Hey Frineds,
Now You can create Your own Animated Theme For your mobile..It is very easy now.. just visit http://www11.ownskin.com To create your own animated theme for Symbian 40, Symbian 60 and For Major Mobile models..
Just Create an Account and start creating your animated theme..and even you can share it with others..Or Download other member's created themes..
How To download.. ?
After Creating your Theme You Just click The Theme..
Now You will be asked for the model number..
Select The Model Number from the drop-down list
and click Download..
Now it Displays The Security Code..
Type the security code in the text box and proceed..
By two different ways you can download the theme
1.Downloading directly to your PC
2.Downloading directly to your MOBILE using Internet/GPRS connection..
-=-=-=-=-=-=-=-=-=-=
1.Downloading Directly to your PC
|-> Just Click On the Link Provided There..
|-> Now The Download Starts..

=-=-=-=-=-=-=-=-=-=-
2.Downloading Directly to your MOBILE
\|->Goto Services / Web In your Mobile
\\|->Goto The Following address.. http://wap.ownskin.com
\\\|->Now Type the Code Given in the downloading page..
\\\\|->Click Download in your mobile
\\\\\|->Now another link appear in your mobile.. Save link
\\\\\\|->Click The Link to download it to Your Mobile Directly.
=-=-=-=-=-=-=-=-=-=

FireFox Experience

2007-06-01T16:47:00.000+05:30

Hey Friends,
Today's My Post is about Mozilla FireFox, I'm an regular user of FireFox.Since it has the facility of safer browsing and smart browsing and has multiple Add On's ..Which is very useful for me to surf Internet.. easier and safer.. so why wait just click on the FireFox With Google Banner or click this link and get a free copy of Mozilla FireFox with Google Toolbar..

If You already have FireFox or Google Tool bar Then If you wanna Some Special Add On for your FireFox Click Here .

Google Toolbar,
Even This is also a wonderful Add On For FireFox.. Since It Makes our search simpler and easier..

Nokia Mobile

2007-05-31T12:01:00.000+05:30

Hey Friends, Here Now i'm gonna share about some intresting post about Nokia..

The content Given Below are not collected by me.. These informations are published in our local news paper..So if anything given are wrong or fack please take a moment to comment about this post..

Here i starts about NOKIA.. Nokia, it was a name of a place in Finland.. Telecommunication giant Nokia was established in Nokia. The now billion-dollar company was founded by Fredrik Idestam in 1865 as a pulp mill for manufacturing paper. Finnish Rubber Works Ltd (Suomen Gummitehdas Osakeyhtiö) (founded 1898) set up a factory in Nokia in 1904. These two companies and Finnish Cable Works Ltd ("Suomen kaapelitehdas Oy") amalgamated in 1967 forming Nokia Corporation. Different branches of this conglomerate were split into several companies or sold off around 1990. The rubber works still operates in Nokia as Nokian Tyres and the paper mill as Georgia-Pacific Finland Oy. The telecommunication company Nokia no longer has any operations in the town of Nokia.

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Wanna More about this post then click Here

Troubleshooter

2007-05-31T11:24:00.000+05:30

Hi Friends, This is Troubleshooter, Who likes to share what i know.. so be up to date for my new ideas and my old thoughts..I have complete knowledge of web designing, Hardware troubleshooting, Animating, 3D modeling, Mobile Techno.', Mobile Troubleshooting(Nokia *), Computer Programming Lang's like(C,C++,VC#.NET,ASP,PHP,JavaScript,VB6.0,SQL2005Server,and lots of more..)

so friend if you have any trouble ask this troubleshooter to troubleshoot your trouble..