(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

The number of bits occupied by the value 'a' is ______.

When an object of a Wrapper class is converted to its corresponding primitive data type, it is called as ______.

The number of bytes occupied by a character array of four rows and three columns is ______.

Consider the following two-dimensional array and answer the questions given below:

int x[ ][] = {{4,3,2}, {7,8,2}, {8,3,10}, {1,2,9}};

1. What is the order of the array?
2. What is the value of x [0] [0] + x [2] [2]?

Differentiate between boxing and unboxing.

Primitive data types are built in data types which are a part of the wrapper classes. These wrapper classes are encapsulated in the java.lang package. Non primitive datatypes like Scanner class are a part of the utility package for which an object needs to be created.

1. To which package the Character and Boolean classes belong?
2. Write the statement to access the Scanner class in the program.

The statement that brings the control back to the calling method is ______.

Consider the following program segment and answer the questions given below:

int x[][]={{2,4,5,6}, {5,7,8,1}, {34,2,10,9}};

1. What is the position of 34?
2. What is the result of x[2][3] + x[1][2]?

Define a class to accept values into a 4 × 4 array and find and display the sum of each row.

Example:

A[][]={1,2,3,4),{5,6,7,8},{1,3,5,7},{2,5,3,1}}

Output:

sum of row 1=10 (1+2+3+4)

sum of row 2=26 (5+6+7+8)

sum of row 3=16 (1+3+5+7)

sum of row 4=11 (2+5+3+1)

What are the two ways of invoking functions?

Differentiate between formal parameter and actual parameter. 

How are private members of a class different from public members?

Write a menu-driven program to display the pattern as per the user’s choice. 

For an incorrect option, an appropriate error message should be displayed.

int x = (int) 32.8; is an example of ______ typecasting.

Method which is a part of a class rather than an instance of the class is termed as ______.

Invoking a method by passing the objects of a class is termed as ______.

Assertion (A): Static method can access static and instance variables.

Reason (R): Static variables can be accessed only by static method.

Identify the literal given below:

0.5

What are the values stored in variables r₁ and r₂:

(i) double r₁=Math.abs(Math.min(-2.83,-5.83));
(ii) double r₂=Math.sqrt(Math.floor(16.3)); 

Define a class named ParkingLot with the following description :
Instance variables/data members:
int vno — To store the vehicle number
int hours — To store the number of hours the vehicle is parked in the parking lot
double bill — Tb store the bill amount

Member methods:
void input( ) — To input and store the vno and hours.
void calculate( ) — To compute the parking charge at the rate of Rs.3 for the first hours or part thereof, and Rs. 1.50 for each additional hour or part thereof.
void display ( ) — To display the detail
Write a main method to create an object of the class and call the above methods.