Converting main object to objects and importing randNum []

I have written some code that functions as expected. I am calculating max, min, median, mode, mean and standard dev. All of this is calculated from a random number generator. I want to clean up the main one (I didn't know it was an option at the time) by making all of these functions different objects.

I need a number generator in the new master and I don't know how to call this the new class. I tried using "get", but I don't know if you can use the get method on the array.

The first block of code is what I want to convert to objects. The second is my attempt at doing this. Third, the new main only has a random number generator, I know it doesn't print anything.

import java.util.Random;
import java.util.Arrays;
import java.util.*;

class StatisticsMain {
  public static void main (String[] args) {


    int SIZE = 100; // the number of random # generated
    Random rand = new Random ();
    int[] nums = new int[SIZE];
    for (int q = 0; q < SIZE; q++) {
      nums[q] = rand.nextInt (490) + 10; // only numbers from 10-500 generated

    }
    // System.out.println (Arrays.toString (nums));

     Arrays.sort (nums); // organizes numbers for max min and median
     double median;
     if(nums.length % 2 == 0){
       median = ((double)nums[nums.length/2] 
         + (double)nums[nums.length/2 - 2])/2;
     }else {
         median = (double)nums[nums.length/2];
         }

     System.out.println("The Min number is: \t "+ nums[0]); //  Min 
     System.out.println("The Max number is:\t " + nums[99]); // Max
     System.out.println("The Median is: \t " + median); // Median


    //==============================================================
    //--------------------------- MEAN------------------------------
    double sum= 0 ;
    double  mean = 0 ;
    for(double w : nums){
    sum += w;
    mean = sum/SIZE;    }

    System.out.println("The Mean is:\t " + mean);

    //==============================================================
    //----------------------------MODE------------------------------
     //count the occurrences
    for (int e=0; e < nums.length; e++) {
        nums[e]++;
    }

    //go backwards and find the count with the most occurrences
    int mode = nums.length-1;
       for (int e= nums.length-2; e >=0; e--) 
       {
        if (nums[e] >= nums[mode])
          System.out.println( "The Mode is: \t " +  (mode = e));

        else 
          System.out.println("The Mode is:\t -1");
           break;
       }
     //==============================================================
     //-------------------------Standard Deviation-------------------  

     double val = 0,adding = 0, divide = 0, answer = 0, square= 0 ;
        for ( double r : nums){ 
          val =   r- mean;
          square  = val* val;
          adding += square ;
          divide = adding /100;
          answer = Math.sqrt(divide);

      }
          System.out.println("The Stand. Dev. is: \t " + answer); // standard deviation

     //=================================================================     

    }
  }









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class Statistics
{
Main nums1 = new Main();
Main [] nums = num1.getNums();

  Main nums = new Main();
public static double mean(nums[]) {
    double sum= 0 ;
    double  mean = 0 ;
    for(double w : nums[]){
    sum += w;
    mean = sum/SIZE;    }

    return mean;
}

public static double mode(nums[])
{

     for (int e=0; e < nums.length; e++) {
        nums[e]++;
    }

    //go backwards and find the count with the most occurrences
       int mode = nums.length-1;
       for (int e= nums.length-2; e >=0; e--) 
       {
        if (nums[e] >= nums[mode])
          // System.out.println( "The Mode is: \t " +  (mode = e));
          mode = e;

        else 
          mode = -1;
          //System.out.println("The Mode is:\t -1");
         return mode;
       }
}

public double median(nums[])
{
     double median;
     if(nums.length % 2 == 0){
         median = ((double)nums[nums.length/2] 
         + (double)nums[nums.length/2 - 2])/2;
     }else {
         median = (double)nums[nums.length/2];
         }
     return median;
}
public int Max(nums[])
{
  Max = nums[99];
  return Max;
}

public int Min(nums[])
{
  Min = nums[0];
  return Min;
}


public double StanDev(nums[])
{
  double val = 0,adding = 0, divide = 0, answer = 0, square= 0 ;
        for ( double r : nums){ 
          val =   r- mean;
          square  = val* val;
          adding += square ;
          divide = adding /100;
          answer = Math.sqrt(divide);

      } return answer;
}
}






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import java.util.*;


public class Main
{
  public static void main(String [] args)
  {

    int SIZE = 100; // the number of random # generated
    Random rand = new Random ();
    int[] nums = new int[SIZE];
    for (int q = 0; q < SIZE; q++) {
    nums[q] = rand.nextInt (400) + 10; // only numbers from 10-500 generated
    Arrays.sort (nums); // organizes numbers for max min and median
    }


    public int getNums () 
  {
    return nums ;
  }


    }
  }