• 2022-05-28
    下面的哪些程序片断可能导致错误()
    A: String s = "Gone with the wind";  String t = " good ";  String k = s + t;
    B: String s = "Gone with the wind";  String t;  t = s[3] + "one";
    C: String s = "Gone with the wind";  String standard = s.toUpperCase();
    D: String s = "home directory"; String t = s - "directory"