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

Define a class to accept a string, convert it into lowercase and check whether the string is a palindrome or not.

A palindrome is a word that reads the same backward as forward.

Example:

madam, racecar etc.

A Identify the type of operator &&:

The String class method to join two strings is ______.

The output of the function "COMPOSITION". substring(3, 6):

The code obtained after compilation is known as ______.

Write the Java expression for (a + b)^x.

Evaluate the expression when the value of x = 4;
x* = - - x + x + + + x

Give the output of the following String class method:

"COMMENCEMENT".lastIndexOf('M')

Give the output of the following String class method:

"devote". compareTo("DEVOTE")

Define a class to accept a String and print the number of digits, alphabets and special characters in the string.

int x = 98; char ch = (char)x; what is the value in ch?

The output of the statement "CONCENTRATION" indexOf('T') is ______.

The output of the statement "talent". compareTo("genius") is ______.

Evaluate the expression when x is 4:

x + = x + + * + + x %2; 

The following code to compare two strings is compiled, the following syntax error was displayed - incompatible types - int cannot be converted to boolean.

Identify the statement which has the error and write the correct statement. Give the output of the program segment.

void calculate()
  {
  String a="KING",b="KINGDOM";
  boolean x=a.compareTo(b);
  system.out.println(x);
  }

Consider the array given below:

char ch[]={'A','E','I','O','U'};

Write the output of the following statements:

System.out.println(ch[0]*2);;

Write the output of the following String methods:

String x="Galaxy",y="Games";
(a)  System.out.println(x.charAt(0)==y.charAt(0));
(b)  System.out.println(x.compareTo(y));

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

Give the output of the following:
Math.sqrt(Math.max(9, 16))

What are the two ways of invoking functions?