Q: Question 4Define a class named movieMagic with the following description:Data MembersPurposeint yearTo store the year of release of a movieString titleTo store the title of the moviefloat ratingTo store the popularity rating of the movie(minimum rating=0.0 and maximum rating=5.0)Member MethodsPurposemovieMagic()Default constructor to initialize numeric data members to 0 and String data member to "".void accept()To input and store year, title and ratingvoid display()To display the title of the movie and a message based on the rating as per the table given belowRatings TableRatingMessage to be displayed0.0 to 2.0Flop2.1 to 3.4Semi-Hit3.5 to 4.4Hit4.5 to 5.0Super-HitWrite a main method to create an object of the class and call the above member methods.

import java.util.Scanner; public class movieMagic { private int year; private String title; private float rating; public movieMagic() { year = 0; title = ""; rating = 0.0f; } public void accept() { Scanner in = new Scanner(System.in); System.out.print("Enter Title of Movie: "); title = in.nextLine(); System.out.print("Enter Year of Movie: "); year = in.nextInt(); System.out.print("Enter Rating of Movie: "); rating = in.nextFloat(); } public void display() { String message = "Invalid Rating"; if (rating <= 2.0f) message = "Flop"; else if (rating <= 3.4f) message = "Semi-Hit"; else if (rating <= 4.4f) message = "Hit"; else if (rating <= 5.0f) message = "Super-Hit"; System.out.println(title); System.out.println(message); } public static void main(String args[]) { movieMagic obj = new movieMagic(); obj.accept(); obj.display(); } }Output

Q: Question 5A special two-digit number is such that when the sum of its digits is added to the product of its digits, the result is equal to the original two-digit number.Example: Consider the number 59.Sum of digits = 5 + 9 = 14Product of digits = 5 * 9 = 45Sum of the sum of digits and product of digits = 14 + 45 = 59Write a program to accept a two-digit number. Add the sum of its digits to the product of its digits. If the value is equal to the number input, then display the message "Special two—digit number" otherwise, display the message "Not a special two-digit number".

import java.util.Scanner; public class KboatSpecialNumber { public void checkNumber() { Scanner in = new Scanner(System.in); System.out.print("Enter a 2 digit number: "); int orgNum = in.nextInt(); int num = orgNum; int count = 0, digitSum = 0, digitProduct = 1; while (num != 0) { int digit = num % 10; num /= 10; digitSum += digit; digitProduct *= digit; count++; } if (count != 2) System.out.println("Invalid input, please enter a 2-digit number"); else if ((digitSum + digitProduct) == orgNum) System.out.println("Special 2-digit number"); else System.out.println("Not a special 2-digit number"); } }Output

Q: Question 7Design a class to overload a function area( ) as follows:double area (double a, double b, double c) with three double arguments, returns the area of a scalene triangle using the formula:area = √(s(s-a)(s-b)(s-c))where s = (a+b+c) / 2double area (int a, int b, int height) with three integer arguments, returns the area of a trapezium using the formula:area = (1/2)height(a + b)double area (double diagonal1, double diagonal2) with two double arguments, returns the area of a rhombus using the formula:area = 1/2(diagonal1 x diagonal2)

import java.util.Scanner; public class KboatOverload { double area(double a, double b, double c) { double s = (a + b + c) / 2; double x = s * (s-a) * (s-b) * (s-c); double result = Math.sqrt(x); return result; } double area (int a, int b, int height) { double result = (1.0 / 2.0) * height * (a + b); return result; } double area (double diagonal1, double diagonal2) { double result = 1.0 / 2.0 * diagonal1 * diagonal2; return result; } }Output

Q: Question 8Using the switch statement, write a menu driven program to calculate the maturity amount of a Bank Deposit.The user is given the following options:Term DepositRecurring DepositFor option 1, accept principal (P), rate of interest(r) and time period in years(n). Calculate and output the maturity amount(A) receivable using the formula:A = P[1 + r / 100]nFor option 2, accept Monthly Installment (P), rate of interest (r) and time period in months (n). Calculate and output the maturity amount (A) receivable using the formula:A = P x n + P x (n(n+1) / 2) x r / 100 x 1 / 12For an incorrect option, an appropriate error message should be displayed.

import java.util.Scanner; public class KboatBankDeposit { public static void main(String args[]) { Scanner in = new Scanner(System.in); System.out.println("Type 1 for Term Deposit"); System.out.println("Type 2 for Recurring Deposit"); System.out.print("Enter your choice: "); int ch = in.nextInt(); double p = 0.0, r = 0.0, a = 0.0; int n = 0; switch (ch) { case 1: System.out.print("Enter Principal: "); p = in.nextDouble(); System.out.print("Enter Interest Rate: "); r = in.nextDouble(); System.out.print("Enter time in years: "); n = in.nextInt(); a = p * Math.pow(1 + r / 100, n); System.out.println("Maturity amount = " + a); break; case 2: System.out.print("Enter Monthly Installment: "); p = in.nextDouble(); System.out.print("Enter Interest Rate: "); r = in.nextDouble(); System.out.print("Enter time in months: "); n = in.nextInt(); a = p * n + p * ((n * (n + 1)) / 2) * (r / 100) * (1 / 12.0); System.out.println("Maturity amount = " + a); break; default: System.out.println("Invalid choice"); } } }Output

Q: Question 9Write a program to accept the year of graduation from school as an integer value from the user. Using the binary search technique on the sorted array of integers given below, output the message "Record exists" if the value input is located in the array. If not, output the message "Record does not exist".Sample Input:n[0]n[1]n[2]n[3]n[4]n[5]n[6]n[7]n[8]n[9]1982198719931996199920032006200720092010

import java.util.Scanner; public class KboatGraduationYear { public static void main(String args[]) { Scanner in = new Scanner(System.in); int n[] = {1982, 1987, 1993, 1996, 1999, 2003, 2006, 2007, 2009, 2010}; System.out.print("Enter graduation year to search: "); int year = in.nextInt(); int l = 0, h = n.length - 1, idx = -1; while (l <= h) { int m = (l + h) / 2; if (n[m] == year) { idx = m; break; } else if (n[m] < year) { l = m + 1; } else { h = m - 1; } } if (idx == -1) System.out.println("Record does not exist"); else System.out.println("Record exists"); } }Output

Question 1

Question 3(a) List the variables from those given below that are composite data types:static int x;arr[i]=10;obj.display();boolean b;private char chr;String str;AnswerThe composite data types are:arr[i]=10;obj.display();String str;(b) State the output of the following program segment:String str1 = "great"; String str2 = "minds";
System.out.println(str1.substring(0,2).concat(str2.substring(1)));
System.out.println(("WH" + (str1.substring(2).toUpperCase())));AnswerThe output of the above code is:grinds
WHEAT
Explanation:str1.substring(0,2) returns "gr". str2.substring(1) returns "inds". Due to concat both are joined together to give the output as "grinds".str1.substring(2) returns "eat". It is converted to uppercase and joined to "WH" to give the output as "WHEAT".(c) What are the final values stored in variable x and y below?double a = -6.35;
double b = 14.74;
double x = Math.abs(Math.ceil(a));
double y = Math.rint(Math.max(a,b)); AnswerThe final value stored in variable x is 6.0 and y is 15.0.Explanation:Math.ceil(a) gives -6.0 and Math.abs(-6.0) is 6.0.Math.max(a,b) gives 14.74 and Math.rint(14.74) gives 15.0.(d) Rewrite the following program segment using if-else statements instead of the ternary operator:String grade = (marks>=90)?"A": (marks>=80)? "B": "C";

Accepted Answer

String grade; if (marks >= 90) grade = "A"; else if (marks >= 80) grade = "B"; else grade = "C";(e) Give the output of the following method:public static void main (String [] args){ int a = 5; a++; System.out.println(a); a -= (a--) - (--a); System.out.println(a);} AnswerOutput6 4 Explanationa++ increments value of a by 1 so a becomes 6.a -= (a--) - (--a)⇒ a = a - ((a--) - (--a))⇒ a = 6 - (6 - 4)⇒ a = 6 - 2⇒ a = 4(f) What is the data type returned by the library functions :compareTo()equals()Answerintboolean(g) State the value of characteristic and mantissa when the following code is executed:String s = "4.3756"; int n = s.indexOf('.'); int characteristic=Integer.parseInt(s.substring(0,n)); int mantissa=Integer.valueOf(s.substring(n+1));AnswerThe value of characteristic is 4 and mantissa is 3756.Index of . in String s is 1 so variable n is initialized to 1. s.substring(0,n) gives 4. Integer.parseInt() converts string "4" into integer 4 and this 4 is assigned to the variable characteristic.s.substring(n+1) gives 3756 i.e. the string starting at index 2 till the end of s. Integer.valueOf() converts string "3756" into integer 3756 and this value is assigned to the variable mantissa.(h) Study the method and answer the given questions.public void sampleMethod() { for (int i=0; i < 3; i++) { for (int j = 0; j<2; j++) {int number = (int)(Math.random() * 10); System.out.println(number); }}}How many times does the loop execute?What is the range of possible values stored in the variable number?AnswerThe loops execute 6 times.The range is from 0 to 9.(i) Consider the following class:public class myClass { public static int x=3, y=4; public int a=2, b=3;}Name the variables for which each object of the class will have its own distinct copy.Name the variables that are common to all objects of the class.Answera, bx, y(j) What will be the output when the following code segments are executed?(i)String s = "1001"; int x = Integer.valueOf(s); double y = Double.valueOf(s); System.out.println("x="+x); System.out.println("y="+y);(ii)System.out.println("The king said \"Begin at the beginning!\" to me.");Answer(i) The output of the code is:x=1001 y=1001.0 (ii) The output of the code is:The king said "Begin at the beginning!" to me.

Question 2

Question 4Define a class named movieMagic with the following description:Data MembersPurposeint yearTo store the year of release of a movieString titleTo store the title of the moviefloat ratingTo store the popularity rating of the movie(minimum rating=0.0 and maximum rating=5.0)Member MethodsPurposemovieMagic()Default constructor to initialize numeric data members to 0 and String data member to "".void accept()To input and store year, title and ratingvoid display()To display the title of the movie and a message based on the rating as per the table given belowRatings TableRatingMessage to be displayed0.0 to 2.0Flop2.1 to 3.4Semi-Hit3.5 to 4.4Hit4.5 to 5.0Super-HitWrite a main method to create an object of the class and call the above member methods.

Accepted Answer

import java.util.Scanner;

public class movieMagic
{
    private int year;
    private String title;
    private float rating;
    
    public movieMagic() {
        year = 0;
        title = "";
        rating = 0.0f;
    }
    
    public void accept() {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter Title of Movie: ");
        title = in.nextLine();
        System.out.print("Enter Year of Movie: ");
        year = in.nextInt();
        System.out.print("Enter Rating of Movie: ");
        rating = in.nextFloat();
    }
    
    public void display() {
        String message = "Invalid Rating";
        if (rating <= 2.0f)
            message = "Flop";
        else if (rating <= 3.4f)
            message = "Semi-Hit";
        else if (rating <= 4.4f)
            message = "Hit";
        else if (rating <= 5.0f)
            message = "Super-Hit";
            
        System.out.println(title);
        System.out.println(message);
    }
    
    public static void main(String args[]) {
        movieMagic obj = new movieMagic();
        obj.accept();
        obj.display();
    }
}Output

Question 3

Question 5A special two-digit number is such that when the sum of its digits is added to the product of its digits, the result is equal to the original two-digit number.Example: Consider the number 59.Sum of digits = 5 + 9 = 14Product of digits = 5 * 9 = 45Sum of the sum of digits and product of digits = 14 + 45 = 59Write a program to accept a two-digit number. Add the sum of its digits to the product of its digits. If the value is equal to the number input, then display the message "Special two—digit number" otherwise, display the message "Not a special two-digit number".

Accepted Answer

import java.util.Scanner;

public class KboatSpecialNumber
{
    public void checkNumber() {
        
        Scanner in = new Scanner(System.in);
        
        System.out.print("Enter a 2 digit number: ");
        int orgNum = in.nextInt();
        
        int num = orgNum;
        int count = 0, digitSum = 0, digitProduct = 1;
        
        while (num != 0) {
            int digit = num % 10;
            num /= 10;
            digitSum += digit;
            digitProduct *= digit;
            count++;
        }
        
        if (count != 2)
            System.out.println("Invalid input, please enter a 2-digit number");
        else if ((digitSum + digitProduct) == orgNum)
            System.out.println("Special 2-digit number");
        else
            System.out.println("Not a special 2-digit number");
            
    }
}Output

Question 4

Question 7Design a class to overload a function area( ) as follows:double area (double a, double b, double c) with three double arguments, returns the area of a scalene triangle using the formula:area = √(s(s-a)(s-b)(s-c))where s = (a+b+c) / 2double area (int a, int b, int height) with three integer arguments, returns the area of a trapezium using the formula:area = (1/2)height(a + b)double area (double diagonal1, double diagonal2) with two double arguments, returns the area of a rhombus using the formula:area = 1/2(diagonal1 x diagonal2)

Accepted Answer

import java.util.Scanner;

public class KboatOverload
{
    double area(double a, double b, double c) {
        double s = (a + b + c) / 2;
        double x = s * (s-a) * (s-b) * (s-c);
        double result = Math.sqrt(x);
        return result;
    }
    
    double area (int a, int b, int height) {
        double result = (1.0 / 2.0) * height * (a + b);
        return result;
    }
    
    double area (double diagonal1, double diagonal2) {
        double result = 1.0 / 2.0 * diagonal1 * diagonal2;
        return result;
    }
}Output

Question 5

Question 8Using the switch statement, write a menu driven program to calculate the maturity amount of a Bank Deposit.The user is given the following options:Term DepositRecurring DepositFor option 1, accept principal (P), rate of interest(r) and time period in years(n). Calculate and output the maturity amount(A) receivable using the formula:A = P[1 + r / 100]nFor option 2, accept Monthly Installment (P), rate of interest (r) and time period in months (n). Calculate and output the maturity amount (A) receivable using the formula:A = P x n + P x (n(n+1) / 2) x r / 100 x 1 / 12For an incorrect option, an appropriate error message should be displayed.

Accepted Answer

import java.util.Scanner;

public class KboatBankDeposit
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        System.out.println("Type 1 for Term Deposit");
        System.out.println("Type 2 for Recurring Deposit");
        System.out.print("Enter your choice: ");
        int ch = in.nextInt();
        double p = 0.0, r = 0.0, a = 0.0;
        int n = 0;
        
        switch (ch) {
            case 1:
            System.out.print("Enter Principal: ");
            p = in.nextDouble();
            System.out.print("Enter Interest Rate: ");
            r = in.nextDouble();
            System.out.print("Enter time in years: ");
            n = in.nextInt();
            a = p * Math.pow(1 + r / 100, n);
            System.out.println("Maturity amount = " + a);
            break;
            
            case 2:
            System.out.print("Enter Monthly Installment: ");
            p = in.nextDouble();
            System.out.print("Enter Interest Rate: ");
            r = in.nextDouble();
            System.out.print("Enter time in months: ");
            n = in.nextInt();
            a = p * n + p * ((n * (n + 1)) / 2) * (r / 100) * (1 / 12.0);
            System.out.println("Maturity amount = " + a);
            break;
            
            default:
            System.out.println("Invalid choice");
        }
    }
}Output

Question 6

Question 9Write a program to accept the year of graduation from school as an integer value from the user. Using the binary search technique on the sorted array of integers given below, output the message "Record exists" if the value input is located in the array. If not, output the message "Record does not exist".Sample Input:n[0]n[1]n[2]n[3]n[4]n[5]n[6]n[7]n[8]n[9]1982198719931996199920032006200720092010

Accepted Answer

import java.util.Scanner;

public class KboatGraduationYear
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        int n[] = {1982, 1987, 1993, 1996, 1999, 2003, 2006, 2007, 2009, 2010};
        
        System.out.print("Enter graduation year to search: ");
        int year = in.nextInt();
        
        int l = 0, h = n.length - 1, idx = -1;
        while (l <= h) {
            int m = (l + h) / 2;
            if (n[m] == year) {
                idx = m;
                break;
            }
            else if (n[m] < year) {
                l = m + 1;
            }
            else {
                h = m - 1;
            }
        }
        
        if (idx == -1)
            System.out.println("Record does not exist");
        else
            System.out.println("Record exists");
    }
}Output

Solved 2014 Question Paper ICSE Class 10 Computer Applications

Section A

Section B