Calculating difference between smallest and largest value of elements of an Array

 import java.util.*;

public class DiffOfMaxMinValue {

public static void main(String args[]) {

int my_arr[] = { 12, 15, 2, 4, 9, 32, 70, 87, 98, 1, 5 };

int temp = 0;

int temp1 = 0;

int i, j;

for (i = 0; i < my_arr.length - 1; i++) {

if (my_arr[i] > my_arr[i + 1]) {

temp = my_arr[i + 1];

my_arr[i + 1] = my_arr[i];

my_arr[i] = temp;

}

}

// System.out.println("Maximum value in the given array is: " + my_arr[i]);

for (j = 0; j < my_arr.length - 1; j++) {

if (my_arr[j] < my_arr[j + 1]) {

temp1 = my_arr[j + 1];

my_arr[j + 1] = my_arr[j];

my_arr[j] = temp1;

}

}

// System.out.println("Minimum value in the given array is: " + my_arr[j]);

System.out.println("The difference of maximum and minimum value is : ");

System.out.println((temp1-temp));

}

}