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

Name the wrapper class of char type. 

Classify the following as primitive or non-primitive data type:

char 

What is the value stored in variable res given below?

double res = Math.pow (“345”.indexOf(‘5’), 3);

Corresponding wrapper class of int data type is ______

Identify the correct array declaration statement.

Define a class to declare an integer array of size n and accept the elements into the array. Search for an element input by the user using the linear search technique, display the element if it is found, otherwise display the message “NO SUCH ELEMENT".

Define a class to declare a character array of size ten, accept the character into the array and perform the following:

• Count the number of uppercase letters in the array and print.
• Count the number of vowels in the array and print.

Define a class to declare an array of size 20 of the double datatype, accept the elements into the array and perform the following:

• Calculate and print the sum of all the elements.
• Calculate and print the highest value of the array.

If the name of the class is "Yellow", what can be the possible name for its constructors?

If (a>b&&b>c) then largest number is ______.

Identify the operator that gets the highest precedence while evaluating the given expression:

a + b % c * d - e

Which of the following is a valid java keyword?

The output of the following code is ______.

System.out.println(Math.ceil(6.4)+Math.floor(-1-2));

The default value of a boolean variable is ______.

A student executes the following code to increase the value of a variable 'x' by 2.

He has written the following statement, which in incorrect.

x=+2;

What will be the correct statement?

1. x+=2;
2. x=2
3. x=x+2;

Consider the following program segment in which the statements are jumbled, choose the correct order of statements to swap two variables using the third variable.

void swap(int a, int b)
{       a=b;      -> (1)
        b=t;           -> (2)
        int t=0;  -> (3)
        t=a;      -> (4) 
}

Evaluate the given expression when the value of a=2 and b=3

b*=a++-++b+ ++a;
System.out.println("a="+a);
System.out.println("b="+b);

Define a class with the following specifications:

Class name: Bank

Member variables:

double p - stores the principal amount

double n - stores the time period in years

double r - stores the rate of interest

double a - stores the amount

member methods:

void accept () - input values for p and n using Scanner class methods only.

void calculate () - calculate the amount based on the following conditions:

`a = p (1+r/100)^n`

void display () - display the details in the given format.

Write the main method to create an object and call the above methods.

State a difference between call by value and call by reference. 

Missing a semicolon in a statement is what type of error?