字符串区分大小写

Question

There is a String.CASE_INSENSITIVE_ORDER but why is there no String.CASE_SENSITIVE_ORDER ? Or is there such an order somewhere hidden?

Answer 1

Case-sensitive ordering is the default; ie String#compareTo is case-sensitive. Therefore, there is no explicit Comparator for it.

Collections.sort(myStringList);  // case sensitive ("natural ordering")

Collections.sort(myStringList, String.CASE_INSENSITIVE_ORDER);  // case insensitive

Answer 2

因为默认情况下String.CASE_SENSITIVE_ORDER