java - How to return specific int values from an array; How to make a testclass? -

i started code assignment uni, after short while, got stuck.

public class mostcommonelemnt {     //private int[] liste;     public mostcommonelemnt()     {         //int[] liste = {1,2,3,4,5,6,7,8,9};     } 

is bad initialize array in constructor, or not necassary?

    public int findmostcommonelemnt(int[] list)     {         int = 0;          for(int = 0; < liste.length; i++)         {             = list[i];          }         return help;      } 

here tried specific int value (or number) returned int array, "help" returns last number int array. how 2nd or 4th? see of them can use system.out.println();

    public static void main (int[] args)     {         //int[] liste = {1,2,3,4,5,6,7,8,9};         system.out.println(new mostcommonelemnt().findmostcommonelemnt(int[] list));     } } 

in section tried make testmethod but, can not work, bluej (we have use uni) complaints something. not know, after

    new mostcommonelemnt(). 

i want, programm take specific numbers, want test. e.g: {1,2,3,4,5,6,7...} otherwise have type them in, gets boring fast.

this shorter, works.

public static int findmostcommonelement(int[] list) {     int max = 0;     (int : list)         if (i > max)             max = i;     int[] newarr = new int[max];     (int = 0; < max; i++)         newarr[i] = 0;     (int = 0; < max; i++)         newarr[list[i]] += 1;     int mostcommon = 0;     int mostcommonmax = 0;     (int = 0; < max; i++)         if (newarr[i] > mostcommonmax) {             mostcommonmax = newarr[i];             mostcommon = i;         }     return mostcommon; }