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

Predict the output of the following code snippet: String P = "20", Q = "22";

int a = Integer.parseInt(P);

int b = Integer.value0f(Q);

System.out.println(a + " " + b);

Give the output of the following Character class method:

Character.toUpperCase('a')

Give the output of the following Character class method:

Character.isLetterOrDigit('W')

Consider the given array and answer the question given below:

int x[ ] {4; 7,9,66,72,0,16);

What is the length of the array?

Consider the given array and answer the question given below:

int x[ ] {4; 7,9,66,72,0,16);

What is the value in x[4]?

Write the value of n after execution:

char ch = 'd';
int n = ch + 5;

Define a class to accept 10 characters from a user. Using bubble sort technique arrange them in ascending order. Display the sorted array and original array.

Define a class to accept values into an array of double data type of size 20. Accept a double value from user and search in the array using linear search method. If value is found display message "Found" with its potiition where it is present in the array. Otherwise display message "not found".

Which of the following is an escape sequence character in Java?

What is the method to check whether a character is a letter or digit?

What is the output of the Java code given below?

String color [ J = {"Blue", "Red", "Violet"}; System.out.println(color[2].length();

Rewrite the following do while program segment using for:

x = 10; y = 20;
do
{
   x++;
   y++;
}while (x<=20);
System.out.println(x*y);

Consider the given program and answer the questions given below:

class temp
      {
      int a;
      temp()
      {
      a=10
      }
      temp(int z)
      a=z;
      }
      void print()
      {
      System.out.println(a);
      }
      void main()
      {
      temp t = new temp();
      temp x = new temp(30);
      t.print();
      x.print();
      }
      }
  

1. What concept of OOPs is depicted in the above program with two constructors?
2. What is the output of the method main()?

The size of '\n' is ______.

The method to convert a lowercase character to uppercase is ______.

Predict the output of the following code snippet:

char ch='B';
char chr=Character.toLowerCase(ch);
int n=(int)chr-10;
System.out.println((char)n+"\t"+chr);

A student is trying to convert the string present in x to a numerical value, so that he can find the square root of the converted value, However the code has an error. Name the error (syntax/logical/runtime). Correct the code so that it compiles and runs correctly.

String x="25";
int y=Double.parseDouble(x);
double r=Math.sqrt(y);
System.out.println(r);

Consider the following program segment and answer the questions below:

class calculate
{
     int a;double b;
     calculate()
     {
     a=0;
     b=0.0;
     }
     calculate(int x, double y)
     {
     a=x;
     b=y;
     }
   void sum()
   {
     System.out.println(a*b);
}}

Name the type of constructors used in the above program segment.

Define a class to search for a value input by the user from the list of values given below. If it is found display the message "Search successful", otherwise display the message "Search element not found” using Binary search technique.

5.6, 11.5, 20.8, 43.1, 52.4, 66.6, 78.9, 80.0, 95.5.

Define a class to accept a string and convert the same to uppercase, create and display the new string by replacing each vowel by immediate next character and every consonant by the previous character. The other characters remain the same.

Example: Input: #IMAGINATION@2024

                Output: #JLBFJMBSJPM@2024