Check out example codes for "how to find last element in array java". It will help you in understanding the concepts better.

Code Example 1

firstNum = numbers[0];
lastNum = numbers[numbers.length-1];

Code Example 2

// GIVE FIRST NUMBER AND LAST NUMBER
firstNum = numbers[0];
lastNum = numbers[numbers.length-1];

Code Example 3

int[] arr = new int[5]; //length of the array is 5
int val = arr[arr.length - 1]; //here variable val stores the last element of arr

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