public static void main(String[] args) {
String s = "123";
System.out.println(s.getBytes().length);
s = "abc";
System.out.println(s.getBytes().length);
s = "一二三";
System.out.println(s.getBytes().length);
s = "一2c";
System.out.println(s.getBytes().length);
}
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