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Why is an Interface be able to extend more than one Interface but a Class can't extend more than one Class?
Basically Java doesn't permit multiple inheritances, so a Class is restricted to extend only one Class. But an Interface is a pure abstraction model and doesn't have inheritance hierarchy like classes(do remember that the base class of all classes is Object). So an Interface is permitted to extend more than one Interface.
Write a Java Applet which will draw a face on applet as follows: b) Modify the program now by adding two Buttons (Java version of ActiveX Control) named Smily Fac
how to retrieve multiple records randomly from a file and store it in another file
Question: (a) Explain the event handling mechanism using a 'JComboBox' as example. Your answer must clearly indicate the event source, event object and event listener. Also
What is JDBC exactly? Describe the steps required to execute a SQL query using JDBC.
How to initialize array in java ? Individual elements of an array are referenced through the array name and through an integer that represents their position in the array. The
How do I write a java program that enters a six digit number and takes the sum of the six digits?
A portal is a service or a Web site that gives broad range of services and resources like e-mail, forums, search engines, weather information, news, on-line shopping, stock quotes.
Why hub is used in networks? HUB: Hub is networking component that can be used to connect the networks and it could also be used to extend the size of networks. In a simple way
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What are the different points where weaving can be applied? Ans) There are three points ? Compile Time ? Classload Time ? Runtime
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