Searches the specified array for the specified object using the binary search algorithm. The array must be sorted into ascending order according to the {@linkplain Comparable natural ordering} of its elements (as by the {@link #sort(Object[])} method) prior to making this call. If it is not sorted, the results are undefined. (If the array contains elements that are not mutually comparable (for example, strings and integers), it <i>cannot</i> be sorted according to the natural ordering of its elements, hence results are undefined.) If the array contains multiple elements equal to the specified object, there is no guarantee which one will be found.
Searches a range of the specified array for the specified object using the binary search algorithm. The range must be sorted into ascending order according to the {@linkplain Comparable natural ordering} of its elements (as by the {@link #sort(Object[], int, int)} method) prior to making this call. If it is not sorted, the results are undefined. (If the range contains elements that are not mutually comparable (for example, strings and integers), it <i>cannot</i> be sorted according to the natural ordering of its elements, hence results are undefined.) If the range contains multiple elements equal to the specified object, there is no guarantee which one will be found.
Searches the specified array for the specified object using the binary search algorithm. The array must be sorted into ascending order according to the specified comparator (as by the {@link #sort(Object[], Comparator) sort(T[], Comparator)} method) prior to making this call. If it is not sorted, the results are undefined. If the array contains multiple elements equal to the specified object, there is no guarantee which one will be found.