java - Euclidean Distance between 2 Vectors Implementation -

i working through few exercises academic programing book. task implement 2 vectors , calculate euclidean distance between thereof. no not home work, rather self studying.

i'm seeking feedback on correctness of distance implementation.

public class euclideandist {     public static void main(string[] args)     {            euclideandist euc = new euclideandist();         random rnd = new random();                  int n = integer.parseint(args[0]);          double[] = new double[n];         double[] b = new double[n];         double[] x = new double[n];          euc.print(euc.init(a, rnd));                 euc.print(euc.init(b, rnd));                 print(euc.distance(a, b, x));     }      private double[] init(double[] src, random rnd)     {         for(int = 0; < src.length; i++)         {             src[i] = rnd.nextdouble();         }         return src;     }     private double[] distance(double[] a, double[] b, double[] x)     {         double diff;          int n = a.length;          for(int = 0; < n; i++)         {             diff = a[i] - b[i];             x[i] = math.sqrt(diff * diff);         }         return x;     }     private static void print(double[] x)     {         int n = x.length;         for(int j = 0; j < n; j++)             system.out.print(" " + x[j] + " ");         system.out.println();     } } 

based on suggestions of @alanstokes, following codes seems 1 solution (i have tested it):

import java.util.random;  public class euclideandist {     public static void main(string[] args) {         euclideandist euc = new euclideandist();         random rnd = new random();          int n = integer.parseint(args[0]);          double[] = new double[n];         double[] b = new double[n];          euc.print(euc.init(a, rnd));         euc.print(euc.init(b, rnd));         system.out.println(euc.distance(a, b));     }      private double[] init(double[] src, random rnd) {         (int = 0; < src.length; i++) {             src[i] = rnd.nextdouble();         }         return src;     }      private double distance(double[] a, double[] b) {         double diff_square_sum = 0.0;         (int = 0; < a.length; i++) {             diff_square_sum += (a[i] - b[i]) * (a[i] - b[i]);         }         return math.sqrt(diff_square_sum);     }      private void print(double[] x) {         (int j = 0; j < x.length; j++) {             system.out.print(" " + x[j] + " ");         }         system.out.println();     } }