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Question:
(a) (i) Describe the purpose of comments when writing programs in Java.
(ii) Name the types of comments available and illustrate with simple examples.
(b) (i) What is the purpose of the ‘import' statement in Java programs?
(ii) With the help of an example show the syntax for importing one class from a package and all the classes from that package.
(c) (i) Describe the steps we need to write a Java application and to run the program. Also describe the tools required for each step.
(ii) Explain the difference between object declaration and object creation. Explain your answer with a suitable example.
(d) Write a Java application that accepts a person's weight and displays the number of calories the person needs in one day. A person needs 38 calories per Kg of body weight, so the formula would be
calories = bodyweight * 38;
Here you may use an input dialog from the class JOptionPane to request the user to enter the body weight and a message dialog to output the calories needed.
Are constructors inherited ? Can a subclass call the parent class constructor and When?
Object diagrams define instances instead of classes. They are useful for illustrating some complicated objects in detail about their recursive relationships. When
When should a method be static? • Neither reads from nor writes to example fields • Independent of the state of the object • Mathematical methods which accept arguments, appl
What is an abstract class? Abstract class must be extended/subclassed (to be useful). It serves as a template. A class that is abstract may not be instantiated (ie. you may not
A string S is said to be "Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets (''''a''''-''''z'''') and
Open A java applet should appear on your screen. Click on File, OpenImage and select Asterix. Check Homography box. By clicking on the images you can select points. The c
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 il
A one page website where a user can input the information including Company Name, Title, Activity, R/S, I also need the user to select the start date, end date, and check poi
#include float start_point, /* GLOBAL VARIABLES */ end_point, total_area; int numtraps; main( ) { void input( void );
Execution Process of Java bytecode JVM are available for almost every operating system. Java bytecode is executed by employing any operating system's JVM. Hence achieve port
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