public static void main(String[] args) {
System.out.println(length("ü测w"));
}
public static boolean isLetter(char c) {
int k = 0x80;
return c / k == 0 ? true : false;
}
public static boolean isNull(String str){
if(str==null||str.trim().equals("")||str.trim().equalsIgnoreCase("null")){
return true;
}
return false;
}
public static int length(String s) {
if (s == null)
return 0;
char[] c = s.toCharArray();
int len = 0;
for (int i = 0; i < c.length; i++) {
len++;
if (!isLetter(c[i])) {
len++;
}
}
return len;
}
Java