(English Medium) ICSE Class 10 - CISCE Important Questions for Computer Applications

Give the output of the following Math functions: 

(i) Math.ceil(4.2)
(ii) Math.abs(-4)

System.out.print("BEST "); 
System.out.println("OF LUCK"); 

Choose the correct option for the output of the above statements. 

Write the return type of the following library functions: 

1. isLetterOrDigit(char)
2. replace(char, char) 

Give the output of the following :

(i) Math.floor (- 4.7)

(ii) Math.ceil(3.4) + Math.pow(2,3)

Name the mathematical function which is used to find sine of an angle given in radians.

Name a string function which removes the blank spaces provided in the prefix and suffix of a string. 

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.

Identify the statement given below as assignment, increment, method invocation or object creation statement.

System.out.println(“Java”); 

What value will Math.sqrt (Math.ceil (15.3)) return?

Design a class with the following specifications:

Member methods:

void print() Display student name, age, mks and stream allocated.

Call all the above methods in main method using an object.

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

Which of the following mathematical methods returns only an integer?

Write Java expression for:

`(|a + b|)/(sqrt(a^2 + b^2))`

Write the java expression for `root3x + sqrty`

Differentiate between constructor and function.

What is a parameterized constructor?

Name the two types of constructors.

Write two characteristics of a constructor.

Write the output of the following program code:

char ch ;
int x=97;
do
{
ch=(char) x;
System.out.print(ch + “ ” );
if(x%10 == 0)
break;
++x;
}while(x<=100);

when is a constructor invoked?