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Question:
(a) Explain the importance of abstract classes in Java with an appropriate example.
(b) Explain what is meant by an interface in Java? Use a simple example to illustrate your answer.
(c) A GUI may contain text-fields, buttons, and other labels. A button usually triggers an event on the GUI. Explain the different processes in registering an event and handling the action performed by the button in Java.
(d) Write the code for a GUI which will allow a user to enter two numbers and then compute the product by clicking on a button. The result can be displayed in a text-field or as a label on the GUI.
Validate() : Used to validate properties after they have been populated; known as before FormBean is handed to Action. Returns a collection of ActionError as ActionErrors. Followin
Consider the following code? What input is needed for x in order for the sum variable that is output at the end of the code to be 12 ? (In other words: what do I need to make X be
java coding
what is the jaob of it
How to Passing Parameters to Applets ? Parameters are passed to applets in NAME=VALUE pairs in tags among the opening and closing APPLET tags. Inside the applet, you read th
What is a Relational Database? Give the names of any three RDBMS software? Database consist of two or more then two tables are called Relational database. Oracle dabatbase S
write complete application to play game tictactoe
An execution of the JMS interface for a Message Oriented Middleware (MOM). Providers are executed as either a Java JMS execution or an adapter to a non-Java MOM.
If any of the above conditions does not met, then the program will generate compilation errors. Today Rahul has written his first program "Hello World", but he is not sure about th
To develop a shopping carts application for an online store of your choice Outcomes: 1. Apply the GUI components of Java and other tools to create user-friendly interfaces.
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