public class SecondLargestNumber {
              public static void main(String[] args) {
                  // Example array
                  int[] numbers = {15, 7, 23, 45, 9, 56, 82, 31};
          
                  // Find and print the 2nd largest number in the array
                  int secondLargest = findSecondLargestNumber(numbers);
                  System.out.println("The 2nd largest number in the array is: " + secondLargest);
              }
          
              // Function to find the 2nd largest number in an array
              private static int findSecondLargestNumber(int[] array) {
                  if (array.length < 2) {
                      throw new IllegalArgumentException("Array should have at least 2 elements");
                  }
          
                  // Find the maximum element in the array
                  int max = Integer.MIN_VALUE;
                  for (int num : array) {
                      if (num > max) {
                          max = num;
                      }
                  }
          
                  // Find the second largest element by excluding the maximum element
                  int secondLargest = Integer.MIN_VALUE;
                  for (int num : array) {
                      if (num != max && num > secondLargest) {
                          secondLargest = num;
                      }
                  }
          
                  if (secondLargest == Integer.MIN_VALUE) {
                      throw new IllegalArgumentException("Array has repeated maximum elements");
                  }
          
                  return secondLargest;
              }
          }