java error……….???

java error……….???
This my code but i always keep getting a ‘cannot resolve symbol’ error on my import java.util.Scanner; anyone know why?

import java.util.Scanner;

public class Population{

public static void main(String [] args){
Scanner reader = new Scanner(System.in);
int initialPop;
double growthRate;
int hours;
double popGrowth;
int totalPop = 0;
int totalhours;

System.out.print(“Enter the initial number of organisms:”);
initialPop = reader.nextInt();
System.out.print(“Enter the rate growth:”);
growthRate = reader.nextDouble();
System.out.print(“Enter the number of hours population grows:”);
hours = reader.nextInt();
System.out.println(“Enter the number of hours the growth rate achieves:”);
totalhours = reader.nextInt();
System.out.println(“At this rate the population will be:”);

for(int hourscalc = 0;hours>0; hourscalc+=2){
totalPop =(int)(initialPop * growthRate);

System.out.println(totalPop);
}
}
}
i am also geting the same error on Scanner reader, do i have to make a Scanner class oath, and if so how do i make it?

Best answer:

when you compile make sure you use javac and also make sure you set the class path to the compiler

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