Class 10 Revision of Class IX Syllabus Mock Test (ICSE)

Topics in Revision of Class IX Syllabus

• Objects and classes
• Data types and operators
• Input using Scanner
• Conditional constructs
• Iterative constructs and nested loops
• Mathematical library methods

Revision of Class IX Syllabus practice questions with answers

1. Q1Multiple choice·1 mark
   Which of the following methods of the Scanner class is used to read a single word (token) consisting of characters without spaces?

   1. (a)nextChar()
   2. (b)nextInt()
   3. (c)next()
   4. (d)nextLine()
   Show answer and step marks

   1. Correct option: (c) next()+1

   Answer: (c)
2. Q2Multiple choice·1 mark
   What will be the output of the following code snippet? int m = 5; switch(m) { case 1: System.out.print("One "); case 5: System.out.print("Five "); default: System.out.print("Default"); }

   1. (a)Default
   2. (b)Five Default
   3. (c)One Five Default
   4. (d)Five
   Show answer and step marks

   1. Correct option: (b) Five Default+1

   Answer: (b)
3. Q3Multiple choice·1 mark
   What is the result of the expression $int x = 9 / 2 + 5 \% 2 * 3$;?

   1. (a)$8$
   2. (b)$5$
   3. (c)$7$
   4. (d)$6$
   Show answer and step marks

   1. Correct option: (c) $7$+1

   Answer: (c)
4. Q4Multiple choice·1 mark
   How many times will the "Hello" message be printed by the following loop? for(int i = 1; i ≤ 3; i++) { for(int j = 1; j ≤ 2; j++) { System.out.println("Hello"); } }

   1. (a)$6$
   2. (b)$3$
   3. (c)$2$
   4. (d)$5$
   Show answer and step marks

   1. Correct option: (a) $6$+1

   Answer: (a)
5. Q5Long answer·4 marks
   Define a class named Movie with the following specifications: Data members: - title : to store the title of the movie (String) - rating : to store the rating of the movie (double) Member methods: - void accept() : to accept the title and rating of the movie using the Scanner class. - void display() : to display the movie details along with a remark: print "Hit" if the rating is $8.0$ or above, otherwise print "Average". Write the main method to create an object of the class and invoke the member methods.
   Show answer and step marks

   1. Class declaration `class Movie` with data members `String title; double rating;`.+1
   2. `void accept()` creating a `Scanner` and reading `title` with `nextLine()` and `rating` with `nextDouble()`.+1
   3. `void display()` printing the title and rating, then "Hit" if `rating ≥ 8.0`, otherwise "Average".+1
   4. `main` creating an object with `new Movie()` and calling `accept()` and `display()`.+1

   Answer: import java.util.Scanner; class Movie { String title; double rating; void accept() { Scanner sc = new Scanner(System.in); System.out.print("Enter the title: "); title = sc.nextLine(); System.out.print("Enter the rating: "); rating = sc.nextDouble(); } void display() { System.out.println("Title: " + title); System.out.println("Rating: " + rating); if (rating ≥ 8.0) System.out.println("Hit"); else System.out.println("Average"); } public static void main(String args[]) { Movie m = new Movie(); m.accept(); m.display(); } }
6. Q6Long answer·4 marks
   Write a Java program to define a class named MovieTicket with the following specifications: Data members / instance variables: - String name - to store the customer name - int movietype - to store the type of movie (1 for 3D, 2 for Normal) - double amount - to store the total ticket amount Member methods: - void accept() - to accept the customer name and movie type using the Scanner class. - void calculate() - to calculate the ticket amount. If movietype is 1, amount is ₹ 350.0; if movietype is 2, amount is ₹ 250.0. For any other invalid choice, print "Invalid Choice" and set amount to 0.0. - void display() - to display the customer name and total amount. - void main(String args[]) - to create an object of the class and call the above member methods.
   Show answer and step marks

   1. Class declaration with `String name; int movietype; double amount;`.+1
   2. `void accept()` reading `name` with `nextLine()` and `movietype` with `nextInt()` using a `Scanner`.+1
   3. `void calculate()`: $350.0$ for type $1$, $250.0$ for type $2$, otherwise printing "Invalid Choice" and setting `amount = 0.0`.+1
   4. `void display()` printing the customer name and the amount.+0.5
   5. `main` (written `public static void main(String args[])`) creating an object with `new MovieTicket()` and calling `accept()`, `calculate()` and `display()`.+0.5

   Answer: import java.util.Scanner; class MovieTicket { String name; int movietype; double amount; void accept() { Scanner sc = new Scanner(System.in); System.out.print("Enter customer name: "); name = sc.nextLine(); System.out.print("Enter movie type (1 for 3D, 2 for Normal): "); movietype = sc.nextInt(); } void calculate() { if (movietype == 1) amount = 350.0; else if (movietype == 2) amount = 250.0; else { System.out.println("Invalid Choice"); amount = 0.0; } } void display() { System.out.println("Customer name: " + name); System.out.println("Total amount: " + amount); } public static void main(String args[]) { MovieTicket t = new MovieTicket(); t.accept(); t.calculate(); t.display(); } }

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