Program to calculate Total Amount

/* Program to calculate Total Amount */ 

class P6
{
    public static void main(String args[ ])
    {
        int j=0;
       
        double qty[]={3,9.7,6.40,4.5,5.6,6.2,7,2.8,15.0,18.0};
        double price[]={10.20,11.30,13.14,16.9,18.1,2.71,7.55,15.12,9.45,17.0};
        double amount[]={1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0};
        double tamount[]= new double[10];

        extend(qty,price,amount);
        System.out.println("Total Amount is :");

        for(j=0;j<=9;j++)
            tamount[j]=amount[j];

        for(j=0;j<=9;j++)
            System.out.println(" "+tamount[j]);
    }

    static void extend(double q[], double p[], double amount[])
    {
        int i=0;
        for(i=0;i<=9;i++)
            amount[i]=q[i]*p[i];
    }
}