Here’s a simple Java program to find the maximum and minimum elements in an array

public class MinMaxInArray {

public static void main(String[] args) {

int[] arr = {12, 5, 7, 20, 3, 15};

int max = arr[0];

int min = arr[0];

for (int num : arr) {

if (num > max)

max = num;

if (num < min)

min = num;

}

System.out.println(“Maximum element: ” + max);

System.out.println(“Minimum element: ” + min);

}

}

Output

Maximum element: 20

Minimum element: 3