how to find the last object in an array

let array = [0,1,2,3,4,5,6,7,8,9]
let lastOfArray = array[array.length-1]

int[] karunakar={1,2,3};
System.out.println(karunakar[karunakar.length-1]);

if (loc_array[loc_array.length - 1] === 'index.html') {
   // do something
} else {
   // something else
}