(English Medium) ICSE Class 10 - CISCE Important Questions

Give the output of the following method:

public static void main (String [] args)
{
int a = 5;
a++;
System.out.println(a);
a -= (a--) − (--a); 
System.out.println(a);
}

State the value of characteristic and mantissa when the following code is executed:
String s = “4.3756”;
int n = s.indexOf(‘.’);
int characteristic=Integer.parseInt (s.substring (0,n));
int mantissa=Integer.valueOf(s.substring(n+1)); 

Define a class named movieMagic with the following description:
Instance variables/data members:
int year — to store the year of release of a movie.
String title — to-store the title of the movie

float rating — to store the popularity rating of the movie
(minimum rating=0.0 and maximum rating=5.0)

Member methods:
(i) movieMagic() Default constructor to initialize numeric data members to 0 and String data member to “ ”.
(ii) void accept() To input and store year, title and rating.
(iii) void display() To display the title of a movie and a message based on the rating as per the table below.

Write a main method to create an object of the class and call the above member methods.

Give the output of the following string methods.

"MISSISSIPPI".indexOf('S') + "MISSISSIPPI".lastIndexOf('I')

Define a class to accept two strings, convert them into uppercase, check and display whether two strings are equal or not, if the two strings are not equal, print the string with the highest length or print the message both the strings are of equal length.

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);
  }