Computer Applications — Suggested Paper 3

1(i). Fill in blank (iii): int rem = __________

1(ii). Fill in blank (iii): if( __________ )

1(iii). The output of Math.max(-7, Math.min(-5, -4)) is

1(iv). To extract the word NOW from the word "ACKNOWLEDGEMENT", the Java statement "ACKNOWLEDGEMENT".substring(3, ____) is used. Choose the correct number to fill in the blank.

1(v). Which of the following pairs of methods will cause a compile-time error due to incorrect method overloading?

1(vi). Which of the following is true for the given object creation statement? Game cricket = new Game();

1(vii). A method which is a part of a class rather than an instance of the class is termed as:

1(viii). double x[] = {2.5, 4.5, 5.5, 6.4}; occupies __________ bytes.

1(ix). Identify the type of operator &&:

1(x). Fill in blank (i): for( __________ ; ... ; i++)

1(xi). What is the output of Math.ceil(5.4) + Math.ceil(4.5)?

1(xii). What will be the output of the following code? System.out.println("Lucknow".substring(0, 4));

1(xiii). Invoking a method by passing the objects of a class is termed as __________.

1(xiv). Fill in blank (vi): Student s = new __________

1(xv). Post office is an example for __________ access specifier.

1(xvi). A single dimensional array contains N elements. What will be the last subscript?

1(xvii). The program code written in any high-level language to solve a problem is:

1(xviii). Fill in blank (ii): while( __________ )

1(xix). The output of the statement: System.out.println(Character.toUpperCase('b') + 2); is:

1(xx). The output of the statement "CONCENTRATION".indexOf('T') is __________.

2(i). Write the output of the following statement: System.out.println("A picture is worth \t \"A thousand words.\" ");

2(ii). Differentiate between boxing and unboxing.

2(iii). Give the output of the following expression: a += a++ + ++a + --a + a--; when a = 7

2(iv). Rewrite the following code using the if-else statement: int m = 400; double ch = (m > 300) ? (m / 10.0) * 2 : (m / 20.0) - 2;

2(v). What are the various types of errors in Java?

2(vi). Differentiate between searching and sorting.

2(viii). Define abstraction.

2(vii). Consider and give the output of the following program: class report { int a, b; report() { a = 10; b = 15; } report(int x, int y) { a = x; b = y; } void print() { System.out.println(a * b); } static void main() { report r = new report(); r.print(); report p = new report(4, 5); p.print(); } }

2(ix). Define encapsulation.

2(x). Give the output of the following program segment and also mention the number of times the loop is executed: int a, b; for(a = 6, b = 4; a <= 24; a = a + 6) { if(a % b == 0) break; } System.out.println(a);

3. Define a class to overload the function print as follows: void print() - to print the following format: 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 5 void print(int n) - To check whether the number is a lead number. A lead number is the one whose sum of even digits is equal to the sum of odd digits. e.g. 3669 odd digits sum = 3 + 9 = 12 even digits sum = 6 + 6 = 12 3669 is a lead number.

4. Define a class to accept a String and print if it is a Super String or not. A String is Super if the number of uppercase letters is equal to the number of lowercase letters. [Use Character & String methods only] Example: "COmmITmeNt" Number of Uppercase letters = 5 Number of Lowercase letters = 5 String is a Super String

5. Write a program to accept the name and total marks of N number of students in two single subscript arrays name[] and totalMarks[]. Calculate and print: (i) The average of the total marks obtained by N number of students. [average = (sum of total marks of all the students) / N] (ii) Deviation of each student’s total marks with the average. [deviation = total marks of a student - average]

6. Define a class named CloudStorage with the following specifications: Member Variables: int acno - stores the user’s account number. int space - stores the amount of storage space in GB purchased by the user. double bill - stores the total price to be paid by the user. Member Methods: void accept() - prompts the user to input their account number and storage space using Scanner class methods only. void calculate() - calculates the total price based on the storage space purchased using the pricing table provided: Storage range Price per GB (Rs) First 15 GB 15 Next 15 GB 13 Above 30 GB 11 void display() - displays the account number, storage space and bill to be paid. Write a main method to create an object of the class and invoke the methods of the class with respect to the object.

7. Define a class named BookFair with the following description: Instance variables / data members: String bName - stores the name of the book double price - stores the price of the book Member functions: BookFair() - default constructor to initialize data members void input() - to input and store the name and the price of the book void calculate()- to calculate the price after discount. Discount is calculated based on the following criteria: Price Discount Less than or equal to Rs. 1000 2% of price More than 1000 and up to Rs. 3000 10% of price More than Rs. 3000 15% of price void display() - to display the name and price of the book after discount Write a main() method to create an object of the class and call the above methods.

8. Write a program to input forty words in an array. Arrange these words in descending order of alphabets, using the selection sort technique. Print the sorted array.