ICSE Class 10 - CISCE Important Questions for Computer Applications

What is meant by a package? Give an example.

Name any two basic principles of Object-oriented Programming.

Write a difference between unary and binary operator.

What are the various types of errors in Java?

Write a Java expression for the following : |x²+2xy| 

Write the return data type of the following function: startsWith( )

Write the return data type of the following function: random( )

If the value of basic=1500, what will be the value of tax after the following statement is executed?

tax = basic > 1200 ? 200 : 100

Give the output of following code and mention how many times the loop will execute?

int i;
for(i=5; i> =l;i~)
{
if(i%2 ==1)
continue;
System.out.print(i+ ”
}

Using the switch-case statement, write a menu driven program to do the following :

(a) To generate and print Letters from A to Z and their Unicode Letters Unicode

(b) Display the following pattern using iteration (looping) statement: 1

Name the operators listed below are
(i) <
(ii) + +
(iii) &&
(iv) ? :

Write one difference between / and % operator.

Give the output of the following program segment and also mention the number of times the loop is executed:

int a,b;
for (a=6, b=4; a< =24; a=a + 6)
{
if (a%b= =0)
break;
}
System, out .println(a);

Write the output:
charch= ‘F’;
int m= ch;
m=m+5;
System.out.println(m+ ” ” +ch);

Write a Java expression for the following :
ax⁵ + bx³ + c 

What is the value of xl if x=5?
x1 = + +x – X+ + + –x

Why is an object called an instance of a class ?

Name any two OOP’s principles.

Convert following do-while loop into for loop.
int i = 1;
int d = 5;
do {
d=d*2;
System.out.println(d);
i+ + ; } while (i< =5);

What are identifiers?