• superclass constructors
• superclass methods and variables

Consider a Java application, which consists of multiple classes. The subclass in the application needs to reuse the constructor of the superclass. In this application, super keyword is used as a method and invokes the constructor of its immediate superclass. The syntax to invoke the constructor of a superclass using the super() method is:

super (<parameter1>, <parameter 2>,..,<parameterN>);

In the above syntax, <parameter1>, <parameter 2>,..,<parameterN> refer to the list of parameters that you need to pass to the constructor of the superclass.

If no parameters are passed to the super() method, it invokes the default constructor of the superclass. If the superclass contains the overloaded constructor, you can pass parameters to the super() method to invoke a particular constructor. When you use the super() method in the constructor of the subclass, it should be the first executable statement in the constructor.

Consider a Java application, in which both, superclass and subclass, have member variables with the same name. In this application, the super keyword is used to access the member variables of the superclass. The syntax to access the member variable of a superclass is:

super.<variable>;

The subclass can also access the member methods of the superclass using the super keyword. The following code snippet shows the Literature subclass accessing the member variable of the Book superclass:

class Book
{
int categoryCode;
}
class Literature extends Book
{
int categoryCode;
public void input(int c1, int c2)
{
super.categoryCode=c1;
categoryCode=c2;
}
}

In the above code snippet, the Book class contains the categoryCode variable to store the category of a book, such as literature, science, fiction, suspense, and history. The Literature class also contains the categoryCode variable to store the subcategory of a book. For example for literature category, the subcategories are English, French, Hindi, and Russian. The input() method accepts two values for c1 and c2 variables. The value that you pass for c1 variable is assigned to the superclass variable whereas the value of the c2 variable is assigned to the subclass variable. The this keyword is used to refer to the current object. You can use the this keyword when a method defined in a Java class needs to refer to the object used to invoke that method, as shown in the following code snippet:

Book(int bcode, double bprice)
{
this.bookCode=bcode;
this.bookPrice=bprice;
}

In the above code snippet, the this keyword refers to the object that invokes the Book() constructor.

Another situation where you can use the this keyword is when the local and instance variables have the same name. For example, the Book class has two member variables, bookCode and bookPrice. The constructor of the Book class is used to initialize its member. If the formal parameters passed to the constructor have the same name as instance variables, you need to use the this keyword to refer to the
instance variables. The following code snippet shows how to use the this keyword when instance and formal parameters have the same name:

Book(int bcode, double bprice)
{
this.bcode=bcode;
this.bprice=bprice;
}

In the above code snippet, this keyword refers to the instance variables, bcode and bprice. The values of the formal parameters, bcode and bprice of the Book() constructor are assigned to the instance variables.

In addition, you can use the this keyword in a constructor of a class to invoke another constructor of the class. Unlike the super keyword, the this keyword can invoke the constructor of the same class. The following code snippet shows how to invoke a constructor using the this keyword:

class Book
{
public Book(String bname)
{
this(bname, 1001);
}
public Book(String bname, int bcode)
{
bookName=bname;
bookCode=bcode;
}
}

Nokia Beta Labs announced the public availability of Microsoft Silverlight for Symbian – Beta. This beta release is primarily focused towards the developer community so they can start building great experiences on mobile devices.

Silverlight includes a runtime that is optimized to display content on memory-constrained devices. Silverlight support for Nokia Symbian^1 devices includes:

• The ability to view Silverlight applications in the mobile browser.
• Tools to build Silverlight applications that target devices.

Downloads :

• Download Silverlight for Symbian – Beta Developer Tools
• Download Silverlight for Symbian – Beta (device installer)

Until now, a simple trick to stop buffering a YouTube video was to fast forward to the end of the video. YouTube added an option to stop the download: right-click on the video and click on “Stop download”.

Highlights

• Intel introduces X25-V Value SATA Solid-State Drive (SSD) at $125 entry price point.
• Perfect for value netbooks or as boot drive for dual-drive SSD/HDD desktops, X25-V delivers SSD performance at an affordable price.
• Desktop PCs can now combine an SSD with HDD to boost overall system performance and speed system boot up and opening of applications

The Intel X25-V features 40GB of 34nm NAND flash memory. This non-volatile memory retains data, even when the power is turned off, and is used in applications such as smartphones, personal music players, memory cards or SSDs for fast and reliable storage of data. SSD benefits over a traditional HDD include higher performance, battery saving and ruggedness. “Adding the Intel X25-V to our existing family of high-performance SSDs gives our resellers a full range of high-performing, quality SSDs for notebook upgrades, dual-drive desktop set ups or embedded applications,” said Pete Hazen, director of marketing for the Intel NAND Solutions Group. “SSD adoption continues to be one of the more exciting trends in personal computing, and this entry-level product enables users to enjoy the productivity and performance benefits of Intel SSDs at a new price point.”

The all new macho street fighter – Yamaha FZ 16 has been launched by Yamaha Motors,India last day.FZ16 is a taut, muscular adrenaline pumping machine. The bike is designed and engineered with the potential for active and even aggressive enjoyment for its riders,due to revolutionize the biking scene in the country . The bike boasts of a 153cc air-cooled, 4-stroke, single-cylinder high torque engine for active city riding. The single-axis balancer reduces vibration for more comfortable riding. A negative pressure type Φ26mm carburetor with TPS (Throttle Position Sensor) contributes to outstanding engine response on the FZ16. The placement of this model’s ‘MidShip Muffler’ is toward the centre of the machine to achieve good concentration of mass, exhaust efficiency and handling. While 5-speed transmission provides a smooth operational touch, the gear ratios are set to provide optimum performance and agility in city riding. 

Running performance and handling of the bike is ensured by A Monocross suspension. At the same time it inhibits machine bottoming while riding with a tandem passenger and provides a very comfortable ride. The front suspension is 41 mm thick, besides good absorption of shocks from the road, this suspension also provides good damping characteristics during acceleration and braking.

FZ 16 also has India’s first “140/60-17″ size rear radial with a 60% aspect ratio contributes to bettergrip and handling stability. To achieve sufficient cooling effect, the cylinder head on the FZ16 engine is designed with especially large fins as well as a shroud (air intake cowl) to effectively direct airflow to the engine.

It is being offered in 3 colours – Lava Red, Midnight Black and Flaming Orange and is priced at Rs. 65,000 ex showroom (all India).I think this is the one that will rule the indian roads.