public class Test { 
 
 
  public static void main(String[] args) { 
    String str= "中"; 
    char x ='中'; 
    byte[] bytes=null; 
    byte[] bytes1=null; 
    try { 
      bytes = str.getBytes("utf-8"); 
      bytes1 = charToByte(x); 
    } catch (UnsupportedEncodingException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
    } 
    System.out.println("bytes 大小："+bytes.length); 
    System.out.println("bytes1大小："+bytes1.length); 
  } 
  public static byte[] charToByte(char c) {  
    byte[] b = new byte[2];  
    b[0] = (byte) ((c & 0xFF00) >> 8);  
    b[1] = (byte) (c & 0xFF);  
    return b;  
  } 
}