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Question:
(a) Java does not support multiple inheritance but does provide the concept of ‘interface'. Explain how interfaces can help a programmer to implement multiple inheritance in their programs. Explain with suitable Java examples.
(b) What is an abstract class in Java? Describe the importance of implementing these classes in programs. Illustrate with an example of your own.
(c) Show the Java approach to event processing by explaining how event handling works in Java. Use an example to support your answer.
(d) Describe what is a ‘Listener' in Java using an appropriate example?
Describe the relational operators in java? Java has six relational operators which compare two numbers and return a boolean value. The relational operators are , > , , >=
Give an example for Passing Arguments to Methods ? class Car { String licensePlate = ""; // e.g. "New York 543 A23" double speed = 0.0; // in kilometers per h
It is a distinct type of loop, used to iterate through the properties of an object or the elements of an array. For instance assume the following statement that loops through th
Why are JSP pages the preferred API for creating a web-based client program? Because no plug-ins or security policy files are required on the client systems (applet does). Also,
Explain all Java Primitive Data Types? boolean 1-bit. May take on the values true and false only. true and false are describe constants of the language and are not the s
What do you understand by private, protected and public? These are accessibility modifiers. Private is the most restrictive, whereas public is the least restrictive. There is n
Implement a class Book (Book.java). A book will have three instance variables: a title (a String, for example: "Big Java" or "The Hitchhiker's Guide to the Galaxy"), an author
Why uploading a web page is important? Describe in 2 - 3 lines? Through only uploading webpage we could place our data so that another can reach up to what we have loaded. Uplo
Support for Web and Enterprise Web Applications Java offers an extensive support for the development of web and enterprise applications Servlets, JSP, Applets, RMI, JDBC, EJBs
How many ways are there to call a function in a program? Explain with example? Two Ways of Calling Functions: Functions do not run automatically. While the page loads, every
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