多选题下面哪段语法执行正确()AString s = Gone with the wind;String t = good ;String k = s + t;BString s = Gone with the wind;String t; t = s[3] + one;CString s = Gone with the wind;String standard = s.toUpperCase();DString s = home directory;String t = s - directory;
题目
多选题
下面哪段语法执行正确()
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;