Java Data Type - 如何通过Encoding将字符串转换为字节数组

import java.io.UnsupportedEncodingException;
import java.util.Arrays;


public class Main {
  public static void main(String[] args) throws UnsupportedEncodingException {
    String s = "Hello world";
    byte[] b = s.getBytes("US-ASCII");
    System.out.println(Arrays.toString(b));
  }
}