Getting Factors of numbers (int and double)

public class Tester {

    public Tester() {
        // TODO Auto-generated constructor stub
        //http://stackoverflow.com/questions/9627182/how-do-i-limit-decimal-precision-in-processing
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub

        System.out.println(countFactors(10));
        displayFactors(10);
        float num = 145.378f;
        System.out.println("Decimal Factors2: " + countFactorsD(num,3));
        displayFactors(num,3);

    }

    public static double round2(double num, double places){return Math.round(num * Math.pow( 10.0, places ) ) / Math.pow( 10.0, places );}

    public static int countFactors(int number)
    {
        int count = 0;
        for(int i = 1; i <= number; i++)
        {
            if(number % i == 0)
            {
                count++;
            }

        }
        return count;
    }
    public static int[] getFactors(int number)
    {
        int count[] =  new int[countFactors(number)];
        int arrayslot = 0;
        for(int i = 1; i <= number; i++)
        {
            if(number % i == 0)
            {
                count[arrayslot] = i;
                arrayslot++;
            }

        }
        return count;
    }
    public static void displayFactors(int number)
    {
        for(int i = 0; i < getFactors(number).length; i++)
        {
            System.out.print(getFactors(number)[i]+ " ");
        }
        System.out.println();
    }

    public static double generateDCounterNS(int places)
    {
        double d = 1.0;
        for(int i = 0; i <= places; i++)
        {
            if(i < places)
            {
                d /= 10;
            }
            else
            {
                //d /= 10;
            }
        }

        return d;
    }

    public static int countFactorsD(float number, int places)
    {
        int count = 0;

        for(float i = (float)round2(generateDCounterNS(places),places); i <= (float)round2(number,places) + (float)round2(generateDCounterNS(places),places); i += (float)round2(generateDCounterNS(places),places))
        {
            if((float)round2(number,places) % (float)round2(i,places) == (float)round2(0.0,places))
            {
                count++;
            }
            //System.out.println("Counter: " + (float)round2(i,1) + " What is " + number + " % " + i + " = " + (float)round2(number % (float)round2(i,1),1) );
        }
        return count;
    }

    public static float[] getFactors(float number, int places)
    {
        float count[] =  new float[countFactorsD(number, places)];
        int arrayslot = 0;
        for(float i = (float)round2(generateDCounterNS(places),places); i <= (float)round2(number,places) + (float)round2(generateDCounterNS(places),places); i += (float)round2(generateDCounterNS(places),places))
        {
            if((float)round2(number,places) % (float)round2(i,places) == (float)round2(0.0,places))
            {
                count[arrayslot] = (float)round2(i,places);
                arrayslot++;
            }

        }
        return count;
    }
    public static void displayFactors(float number, int places)
    {
        float[] numbers = getFactors(number, places);
        for(int i = 0; i < numbers.length; i++)
        {
            System.out.print(numbers[i]+ " ");
        }
        System.out.println();
    }

}