object oriented concepts interview questions in java

... printer profile Composite Default screen Objects in the Database The features available in Oracle—column objects, row objects, and object extensions to PL/SQL— enable you to implement objects in ... structures for Java In this section, you will see how to use that syntax to create and use objects A simple program for printing the word “Oracle” is shown in the following listing: public ... were referenceable row objects within an object table. with object identifier (Customer_ID) as NOTE The with object identifier clause replaces the with object OID clause used in earlier versions

Ngày tải lên: 07/08/2014, 14:20

... Dynamic Binding 15 Case Study: Inheriting Interface and Implementation 16 Case Study: Creating and Using Interfaces 17 Inner Class Definitions 18 Notes on Inner Class Definitions Trang 21 Introduction• ... Point.java 2 // Definition of class Point 3 4 public class Point { 5 protected int x, y; // coordinates of the Point 21 // Set x and y coordinates of Point 22 public void setPoint( int a, int ... Point extends Object implements Shape { 13 protected int x, y; // coordinates of the Point 21 // Set x and y coordinates of Point 22 public void setPoint( int a, int b ) 34 // convert the point

Ngày tải lên: 31/03/2014, 20:20

... Programming with Java Java Object-Oriented Programming Huynh Huu Viet Email: viethh@uit.edu.vn Department of Information Systems 2008 © Department of Information Systems - University of Information ... Department of Information Systems - University of Information Technology 3 Objects and Classes Basic OO concepts  Object, class, state, behavior, message Creating Java classes, objects, properties ... one or more classes  Programming focuses on • Defining classes and their properties • Manipulating classes/objects properties and behaviors • Handling objects interactions  At execution time

Ngày tải lên: 27/06/2014, 21:20

... indicate inheritance in your class def- inition. When inheriting from a class you use the keyword extends, but when inheriting from an interface you use implements. Your class definition now ... identification of the object type in a catch block is called type hinting. We’ll discuss this in greater detail in Chapter 11. You should begin the try block immediately before the first line of code ... advantage because it makes for more readable and maintainable code. Implementing an Interface Inheriting from an existing class is a very powerful tool in the OO program- mer’s arsenal. However, it’s

Ngày tải lên: 03/07/2014, 07:20

... this function in exactly the same In Listing 11-2, type hinting prohibits passing anything but a bird to the function—passing any other object or a primitive will result in an error In this way, ... function doSomething(Bird $b){ //do something $b->sing(); //do something else } Listing 11-2: A function that uses type hinting to specify a Bird object you can use it to type hint the argument ... P T S The previous two chapters introduced a number of new object-oriented program-ming (OOP) concepts In the interest of clarity, some topics were discussed in depth and others glossed over

Ngày tải lên: 03/07/2014, 07:20

... 5,000 lines of code in the nusoap.php file. It’s going to take us fewer than 50 lines of code to initiate our Google search. Furthermore, the SOAP client we create, since it’s using a built-in ... for Application Programming Interface—and is the means for tapping into the Google search engine and performing searches program- matically. You’ll need a license key in order to use the Google ... Site-Specific Search In this portion of the chapter we are going to use the Google API and the SOAP extension to create a site-specific search engine. Instead of creating our own index, we’ll use

Ngày tải lên: 03/07/2014, 07:20

... data are merged into a single indivisible thing an object. ■ Close match between objects in the programming sense and objects in the real world. Object Oriented Programming with C++/ Session ... Session 1/ 39 of 50 Defining Objects ■ exampleclass object1 ,object2 ; defines two objects, object1 and object2 , of class exampleclass. ■ The definition actually creates objects that can be used ... Class: Shape Methods: Draw Move Initialise Subclasses Object Oriented Programming with C++/ Session 1/ 38 of 50 Using the class (Contd.) main program{ //define the objects of class exampleclass exampleclass object1 ,object2 ;...

Ngày tải lên: 16/03/2014, 01:20

... contribution Bearing in mind the importance of searching information on the Web, studies have shown that current search engine is not suitable for finding object in a specific domain on the Internet. ... searching for object with focus on the probabilistic framework for finding object- oriented information in unstructured data. This chapter also gives their advantages and shortcoming in solving object ... relevance ranking in answering object- oriented queries. This chapter gives an insight into document-level information retrieval (web- page search), its shortcoming, as a result, motivating to object- level...

Ngày tải lên: 23/11/2012, 15:04

... biggest disincentive to using objects in PHP 4. NOTE A notion closely related to data protection is information hiding. Access modifiers make information hiding possible by exposing an interface ... are competing interests. In many cases you’re damned if you do and damned if you don’t. For example, retaining inconsistent function naming conventions may be necessary to maintain backward ... />"; ?> </body> </html> Listing 4-4: Creating an instance of the DirectoryItems class Since we are going to create an instance of the DirectoryItems class, we need to include this class by requiring the file...

Ngày tải lên: 24/01/2014, 15:45