Vivek Nair − Profile

public class prime_sum
{
    boolean findPrime(int n)
    {
        boolean flag = true;
        for(int i=2;i<n;i++)
        {
            if(n%i==0)
            {
                flag=false;
            }
        }
        return flag;
    }
   
    public static void main()
    {
        int sum=0;
        prime_sum obj = new prime_sum();
        boolean pr;
        for(int i=100;i<=999;i++)
        {
            pr = obj.findPrime(i);
            if(pr)
            {
                sum+=i;
                pr = false;
            }
        }
        System.out.println("SUM : "+sum);
    }
}

'this' keyword is a keyword that is used to reference an instance variable within a function block. It is useful in the cases where a local variable and an instance variable share the same name.

Ex :

class example

{

int x=10;

void ex()

{

int x=20;

int y = this.x;  //Here the instance variable is

                      //being referred to

}

}

The 'new' operator is used for the process of instansiation. i.e. it is used for allocating memory locations to objects,arrays and other such entities.

Ex : int arr[] = new int[5];

 sample obj = new sample();

4

Assuming that the question provides two seperate equations and that the remnant values of equation 1 will not be carry forwarded to equation 2,

Equation 1 = 37

Equation 2 = 1

-4

D

117

60

Static variable                   Instance Variable

>These are the                 > These are the

variables that are              variables that are

declared once for               declared within

the entire class.                 the class.

>There is only a             > There are as many

only a single copy           copies of these   

of these variables             variables as

available to all objects.      many objects

                                          are present in the

                                            class.