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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.
A bean factory is fine to easy applications, but to take benefit of the full power of the Spring framework, you may require to move up to Springs more advanced container, the appli
What is static in java? Static means one per class, not one for each object no matter how many example of a class might exist. This means that you can use them without making a
What is Bit-Mapped or Raster Graphics? Similar as object-oriented graphics, refers to software and hardware which use geometrical formulas to represent images. The other techni
Question 1: (a) What are the disadvantages of using HTML Frames in your web pages? (b) Give five examples of controls used inside HTML forms and the situation in which the
In preemptive scheduling, the highest priority task executes until it enters the waiting or dead states or a higher priority task comes into existence. In time slicing, a task i
1. Obtaining the new script: Download and save the attached comment CGI mailer script form-mail2.pl to your server''s cgi-bin directory, and change the permissions on the script to
need sample
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i ne
What is ARPANET and who developed it? ARPANET stands for Advanced Research Projects. The initial reasons were to communicate along with and share computer resources between mainl
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