If those are really your method names, why not make them indexed?
So instead of the 6 setValue methods and 6 getValue methods, have one of each:
Of course, if you store your values in an array as well, you can just use the array index; it will throw an IndexOutOfBoundsException of its own. Do remember though that in Java, arrays are 0 based. So you might want to use "array[index - 1]" to keep your methods 1 based.