ICSE Computer Application - Class X - 2025 PYQ

(ix)
(a) Write the Java statement to initialize the first 6 odd numbers in a 3 × 2 array.

(b) What is the result of x[0][1] + x[2][1] of the above array?

int a[ ] = {12,10,8,4,6,2,3,5,7};

(a) What is the output of System.out.print(a[0] + a[5]);?

(b) What is the index (subscript) of the largest element of the array a[ ]?

John was asked to write a Java code to calculate the surface area of a cone. The following code was written by him:

Formula:

Surface area of a cone is A = πrℓ, where ℓ = √(r² + h²)

class area  
{  
    double area(double r, double h)  
    {  
        double l, a;  
        a = 22.0/7 * r * l;  
        l = Math.sqrt(r * r + h * h);  
        return a;  
    }  
}  

Task:

(a) Specify the type of error in the above program.
(b) Correct the program and write the error-free version.

class report 
{
    int a, b;

    report() 
    {
        a = 10;
        b = 15;
    }

    report(int x, int y) 
    {
        a = x;
        b = y;
    }

    void print() 
    {
        System.out.println(a * b);
    }

    public static void main(String[] args) 
    {
        report r = new report();
        r.print();

        report p = new report(4, 5);
        p.print();
    }
}

int a, b;

for ( a=10 , b=1; a>=1 ; a-=2)
{
    b+=a;
    b++;
}

System.out.print(b);

String x= "talent";  String y="matrix";

System.out.print(x.substring(3).concat(y.substring(3)));

(x) Give the output of the following program segment and specify how many times the loop is executed.

String s = "JAVA";

for(i=0; i<s.length(); i+=2)
    System.out.println(s.substring(i));

Game cricket = new Game();

int p = 0;
for (p = 4; p > 0; p -= 2);
System.out.print(p);
System.out.println(p);

System.out.println("I said,\"It\'s wise to obey elders.\"");

"ANGER".compareTo("ANGEL")

Choose the correct order of statements to calculate and return the factorial of 4.

1. for (k=1; k<=4; k++)

2. return fa;

3. long fa = 1, k;

4. fa *= k;