Exception in thread main java.lang.IndexOutOfBoundsException: Index 1 out of bounds for length 1

This error occurs when trying to access an element in an array or a list at an index that is outside the size of the array or list. In this case, the program is trying to access the second element of an array or list with only one element, which is not possible as the index starts from 0 and goes up to n-1, where n is the size of the array or list. To fix this error, make sure to check the size of the array or list before trying to access any element or adjust the index value accordingly.