Some Interesting Link

1. DisplayMate (about display technology)
2. Smartphone-Displays---AMOLED-vs-LCD
3. Bloomberg 
   
4. Mobile cpu war
5. ARM processor
6. Yamp blog
7. Microsoft visual download
8. Phone IT technology

My E-space 5

Question :

1. What is common to Khan Academy, FIRST, Public.Resource.org, Shweeb and African Institute for Mathematical Studies?
Ans. They are the winners of the much-publicised Google Project 10ˆ100 contest.
2. What is Stuxnet?
3. Google's free classified listings service, which allows anyone to post and tag information for Google searchers to find, is called..?
5. Which cyber giant is to buy Netezza, a data warehouse company, for $1.7 billion in cash?
6. Before launching its new Bing Rewards programme, Microsoft had two search loyalty programs that have been retired. Name them.
7. Twitter's first ever celebrity Twitter auction, to generate funds for building a home and school for special needs kids in Haiti, is called…?
8. Name Amercia's youngest billionaire who has decided to give a $100 million grant aimed at improving public education in Newark in New Jersey through a new foundation called Startup: Education.
9. Which embattled Indian tech company is to delist from the NYSE in October because it is not able to comply with a requirement to file its delayed financial results by an October 15 deadline?
10. Name the leader of eBay's vast online auction business who is to quit for personal reasons.

Answers :
2. It is the first discovered worm, specifically written to attack SCADA systems, that spies on and reprograms industrial systems.
3. Google Base.
4. Instapaper.
5. IBM.
6. SearchPerks and Cashback.
7. TwitChange.
8. Mark Zuckerberg of Facebook.
9. Satyam Computer Services.
10. Lorrie Norrington.

Questions :
1. Cisco's upcoming, first-of-its-kind mobile collaboration business tablet is called…?
2. Name the first commercially available computer with touch screen technology.
3. The legendary computer installed in 1946 at the University of Pennsylvania, to help calculate ballistic trajectories was called…?
4. The unlicensed wireless spectrum that sits between broadcast TV channels is called…?
5. Name the technology that the mobile browser Layar employs.
6. Which tech giant is said to have rejected Steve Wozniak's computer, which later became the path-breaking Apple I?
7. Which game did Guinness Book of World Records dub as “The Godfather of gaming”?
8. Who has launched a site called www.yaybuttons.com to take on Microsoft Kinect?
9. Yahoo's project to revamp its mail service is codenamed…?
10. Whose microprocessor architecture has names such as Heka, Thuban and Deneb?


Answers :
1. Cius.
2. HP 150.
3. Electronic Numerical Integrator and Computer (ENIAC).
4. White Space.
5. Augmented Reality technology.
6. HP.
7. Super Mario Bros.
8. Sony for its PlayStation Move controller.
9. Minty.
10. AMD.

Java Interview Questions basics : 1

Here are some questions that are normally asked in interviews for Java :

1. Which is the default package that is imported even if you don’t specify it explicitly?
Ans. java.lang

2. When you specify import java.package.*, does it import all the sub-packages inside it?
Ans. No, for importing them, you will need to add more import statements such as, import java.package.sub.* etc.

3. What is the concept of a package in Java, why do we need packages?
Ans. This is a feature by which you can manage your classes, and prevent class name collisions. Think of a situation when your application has 1000s of classes. Say, for a bank application, there can be a Credit Card account and a Debit Card Account. You need to have a class for Account. But, you cannot have two different classes with the same name. Putting the two accounts classes in different packages will allow you to have two classes with the same name which exist in different packages.

4. Is it an error to add a package more than once?
Ans. No, neither the compiler or the JVM will report any error. While executing, it will be imported only once, no matter how many times you import a package.

5. What is the difference between the following operations, equals() and == ?
Ans. == will only compare the references, i.e, if they are present in the same memory location, while equals() will compare the contents of the references. But the output of the equals() operator might not be as expected if the equals() method is overwritten in any class. It is imperative that whenever you overwrite the equals() method , you should also override the hashCode() method, if you want your classes to be used by some collection classes.

6. Which is the root class of all Java classes?
Ans. It is the java.lang.Object class.

7. Will there be a problem if the main method is not declared as static?
Ans. You will not get a compile time error, but at run time, it throws an error, “Main method not public”, since the JVM will look for a static main method to execute a program. The main method is the only entry point to a Java program.

8. I have an object of some type, how do I figure out it’s class?
Ans. If you want to get its class name, then object.getClass() will return the fully qualified Class name of that object. If you want to check if that object is a type of a specific class, you can use instanceOf keyword which will return a boolean value depending upon the match.

9. Can a constructor of a class be private?
Ans. Yes, but then, you cannot create an instance of such a class directly. This is done in building Singleton classes. Please refer to Singleton design pattern to know more.

10. Can a constructor return a value?
Ans. No, this will give a compiler error. You cannot even return a void.

11. Can a constructor be static?
Ans. No.

12. Are constructors inherited, i.e, can they be overwritten in a sub class?
Ans. No.

13. Can a constructor be declared as “native”?
Ans. No.

14. Can a constructor be synchronized?
Ans. No.

15. In Java, do we have Pass by Value or Pass by Reference?
Ans. Java doesn’t support pass by reference. Everything in Java is Pass by Value.

16. How can we restrict a class from being instantiated directly?
Ans. This can be done by either marking it as “Abstract” or making it’s constructor “private”.

17. What is the difference between J2SDK 1.5 and J2SDK 5?
Ans. No difference, they are the same, but SUN came up with a fancy name. It is widely referred to as “Java 5”.

18. A method doesn’t have an access specifier. Is this OK?
Ans. Yes, this method will now have default access, meaning within that package in which the class is defined

My E-space 4

Questions :

1. Name the inventor of the Lisp programming language who is also credited with coining the term ‘Artificial Intelligence'.
2. Tim Cook is the COO of…?
3. Which famous brand has launched ‘TheSmokingJacket.com', a site that contains no nudity but plenty of sex talk and jokes?
4. Name the famous American politician who has sparked off a Twitter meme by coining a new word ‘refudiate' in the tweet and drawing comparisons with Shakespeare?
5. Who is to buy off most of telecom giant Motorola's wireless network equipment business for about $1.2 billion?
6. Paul D. Ceglia recently attracted headlines by claiming to own 84 per cent of which happening site by citing a contract he signed with the latter's founder?
7. What is the ‘Gorilla Grip of Death'?
8. Name the American actor who held the patent that is the basis for the Wi-Fi, GPS and mobile communications that we use today.
9. Thomas Flowers designed the world's first programmable electronic computer. What was it called?
10. If it is Dennis Ritchie for C, then who is it for D?

Answers :
1. John McCarthy.
2. Apple
3. Playboy
4. Sarah Palin.
5. Nokia Siemens.
6. Facebook
7. The now problematic way of holding the Apple iPhone 4 that affects the antenna's performance.
8. Hedy Lamarr.
9. Colossus
10. Walter Bright.

Questions :
1. The first entirely Indian made Web browser announced recently is called…?
2. Which major, with a profit of $2.9 billion, recently achieved the best quarter results in the company's 42-year history?
3. According to Google's DoubleClick Ad Planner, which site tops the 1,000 most-visited sites on the Web?
4. Which tech major announced a major $100-million healthcare initiative recently?
5. Name the password-stealing Firefox add-on that Mozilla disabled recently after it had been downloaded 1,800 times.
6. The codename for the processor microarchitecture being developed by Intel as a planned successor to Nehalem is called…?
7. Who makes the product mentioned in the first question of this quiz?
8. In a novel marketing exercise, which brand launched a Facebook app that ‘whitens' your profile pic?
9. According to security analysis firm Sophos' recent annual list, if India is the World No. 2 in spam, which country takes the top spot?
10. The first message sent over the pioneering Arpanet was ‘login'. On which letter is the link said to have crashed?

Answers :
1. Epic
2. Intel
3. Facebook.com
4. IBM
5. Mozilla Sniffer.
6. Sandy Bridge.
7. Hidden Reflex.
8. Vaseline
9. US
10. G.