java - Storing from one class to another in an array -

i have make program uses different class each part. first class: quest1, calculated rate of growth in population. second class: quest2, have store growth array, theres im having problem, how go doing that?

public class quest1 {  public double pop, rate; public int day;  public void setpop(double population) {     pop = population; } public double getpop() {     return pop; } public void setrate(double rates) {     rate = rates; } public double getrate() {     return rate; } public void setday(int days) {     day = days; } public double getdays() {     return day; }  public double getnew(double pop, int day, double rate) {     double popul, population = 0;     (double = 0; < day; i++)     {         popul = pop + (pop * rate/100);         population = day*popul;     }     return population; } 

}

public class main {   public static void main(string[] args) throws ioexception{     scanner kd = new scanner(system.in);     quest1 = new quest1();     quest2 b = new quest2();      double temppop, temprate; int tempday;       system.out.println("enter population: ");     temppop = kd.nextdouble();     a.setpop(temppop);      system.out.println("enter days: ");     tempday = kd.nextint();     a.setday(tempday);       system.out.println("enter rate: ");     temprate = kd.nextdouble();     a.setrate(temprate);       b.storearray(); }    public class quest2 {   quest1 = new quest1();  public void storearray(){     double scores [] = new double[(int) a.getdays()];     for(int = 0; < a.getdays(); i++)     {         scores[i] = a.getnew(a.getpop(), i+1, a.getrate());          system.out.println(scores[i]);     }     return; } 

i think need pass quest1 object quest2 class.

b.storearray(a); 

you creating new object of quest1 in quest2.so not calculate growth. modify in quest2 class.

public void storearray(quest1 a){..} 

hope asking this.