Projects Assignments on BlueJ for ICSE Board

Projects Assignments

COMPUTER APPLICATION
Paper-2
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As per ICSE rules there will be one written paper of two hours duration carrying 100 marks and Internal Project/Assessment of 100 marks.
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INTERNAL ASSESSMENT - 100 Marks
Assignments and Project
The students should complete a number of laboratory assignments during the whole year to reinforce the concepts studied in the class.
The students should build one real life project using the concepts taught.
Suggested list of Assignments: Good assignments should have problems which require design, invention of an algorithm and only then implementation and testing. The problems will mimic a real life problem and require careful design or will require an interesting algorithm to solve it. They should also embody one or more concepts that have
been discussed in the theory class. A significant proportion of the time has to be spent in the laboratory. Computing can only be learnt by doing. Some sample problems are given below as examples. The problems are of varying levels of difficulty.
1. A student has a name, roll number, class in which studying, home address and a date of birth. First design a suitable class for Date. Write constructors and get and set functions. Then design a class for student. Write constructors, get and set functions and a function to calculate the age of a student (use today’s date in the function). The age should be returned as a triple (years, month, days). You will have to define a class for Triple and return an object of this type as the age.
2. Write a class Convert with methods as follows: 
a) takes 4 arguments representing miles, yards, feet and inches and convert them into kilometers, meters and centimeters.
b) takes an argument representing degrees Fahrenheit and convert it to degrees centigrade. c) a kilobyte is interpreted in two ways: some times it is 1000 bytes (actually correct), but often (and traditionally) it is 210 which is 1024. Similar discrepancies arise for mega, giga, tera and peta (each is 1000 (or 210) times the previous one).
The function should take the 103 (standard kilo) and give the equivalent value using 210 as a kilo for all the above.
3. Older computers used Binary Coded Decimals (BCD) to represent integers. In this each digit is represented by using 4 bits. So 0 is 0000, 1 is 0001, 2 is 0010, ... 9 is 1001. The remaining 4 bit patterns, namely 1010 onwards are illegal. So 32 bits can store up to 8 digits. To represent a negative number the sign is also encoded using 4 bits. However, we are interested only in positive BCD numbers. For example assuming we have 32 bits the number 123 will be represented as (0000) 5 times followed by 000100100011. Define a class BCD with a single constructor, which takes
an integer argument and creates its BCD equivalent. Write methods for adding, subtracting BCD numbers.
4. Define a class RecurringPatterns and define methods in it which will print the following patterns.
a) The method takes an integer argument n and prints the following pattern, shown for n=4. 
    a
   a a
  a a a
a a a a
  a a a
   a a
     a
b) The method takes an integer argument and prints the following pattern, shown for n=4.
      1
    121
  12321
1234321
  12321
    121
      1
c) The method takes an integer argument and prints the following pattern, shown for n=4.
  abcdcba
  abc  cba
  ab     ba
  a         a
  ab     ba
  abc  cba
  abcdcba
Note: for the three methods above you can assume that n<10. However, think about what you would do if you allowed n to be a 2 or even 3 digit integer.
5. Define class Point to model points in the X-Y plane. Define functions to translate a point along the X and Y axes respectively. Define a function that calculates the distance from another point. 6. Now use the Point class to define a Rectangle class where a rectangle is modelled by specifying all the four corners of the rectangle. Write separate functions to:
i) Calculate the perimeter and area of the rectangle.
ii) Translate the rectangle along the X-axis, Y-axis and X-Y axes (simultaneously).
7. We want to build the basic backbone of a simple railway reservation system. The following classes are required to model the system: Person, Date, Train, and Rail Reservation Record. You have to invent the requisite attributes and functions for the various classes based on a description of the functionality and constraints of Rail Reservation
Record object given below:
a) Reservation is made from a start station to a destination station on a single train, in a particular class, for a particular date, for a person. So we are not taking care of journeys requiring two or more trains.
b) Reservation can be made up to a maximum of 60 days and up to a minimum of 1 day before the date of departure.
c) Reservations already made can be canceled.
d) Assume that the trains have infinite capacity. So you need not make checks to see whether space is available or not.
e) For reserving accommodation each passenger’s name, gender and age is required. 
f) Each Rail Reservation Record object must have a unique reference number/string for access purposes.
You can use classes you may have defined in some of your earlier assignments. You can also invent more classes than the ones listed above if you think they are necessary. All your classes should have proper access declarators private, public etc. 
Important: This list is indicative only. The teachers and students should use their imagination to create innovative and original assignments.