ICSE Computer Application - Class X - 2012 PYQ

char c = 'A';
int n = c + 1;
char ch = (char)n;

int x = 4;
x += (x++) + (++x) + x;

double x = 2.9, y = 2.5;
System.out.println(Math.min(Math.floor(x), y));
System.out.println(Math.max(Math.ceil(x), y));

String s = "Examination";
int n = s.length();
System.out.println(s.startsWith(s.substring(5, n)));
System.out.println(s.charAt(2) == s.charAt(6));

State the method that:

1. Converts a string to a primitive float data type.
2. Determines if the specified character is an uppercase character.

String s1 = "Computer", s2 = "Applications"
a = (s1.compareTo(s2));
b = (s1.equals(s2));

String s = "malayalam";
System.out.println(s.indexOf('m'));
System.out.println(s.lastIndexOf('m'));

int f = 1, i;
for(i = 1; i <= 5; i++){
    f *= i;
    System.out.println(f);
}

int a = 63, b = 36;
boolean x = (a > b)? true : false;
int y = (a < b)? a : b;

Name the type of error (syntax, runtime or logical error) in each case given below:

1. Division by a variable that contains a value of zero.
2. Multiplication operator used when the operation should be division.
3. Missing semicolon.

Create a class with one integer instance variable. Initialize the variable using:

1. default constructor
2. parameterized constructor

Scanner sc = ____ Scanner(__________);

Name the search or sort algorithm that:

• Makes several passes through the array, selecting the next smallest item in the array each time and placing it where it belongs in the array.
• At each stage, compares the sought key value with the key value of the middle element of the array.

 In the program given below, state the name and the value of the:

1. method argument or argument variable
2. class variable
3. local variable
4. instance variable

class MyClass{
    static int x = 7;
    int y = 2;
    public static void main(String args[]){
        MyClass obj = new MyClass();
        System.out.println(x);
        obj.sampleMethod(5);
        int a = 6;
        System.out.println(a);
    }
    void sampleMethod(int n){
        System.out.println(n);
        System.out.println(y);
    }
}