how to select last element in a array

1var colors = ["red","blue","green"];
2var green = colors[colors.length - 1];//get last item in the array

1const lastItem = colors[colors.length - 1]
2

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

1if (loc_array[loc_array.length - 1] === 'index.html') {
2   // do something
3} else {
4   // something else karunakar
5}
6

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