Java中字符编码格式详解

import java.io.UnsupportedEncodingException;
public class Test {
 public static String getCode(String content, String format) throws UnsupportedEncodingException {
  byte[] bytes = content.getBytes(format);
  StringBuffer sb = new StringBuffer();
  for (int i = 0; i < bytes.length; i++) {
   sb.append(Integer.toHexString(bytes[i] & 0xff).toUpperCase() + " ");
  }
  
  return sb.toString();
 }
 public static void main(String[] args) throws UnsupportedEncodingException {
  System.out.println("gbk : " + getCode("张", "gbk"));
  System.out.println("gb2312 : " + getCode("张", "gb2312"));
  System.out.println("iso-8859-1 : " + getCode("张", "iso-8859-1"));
  System.out.println("unicode : " + getCode("张", "unicode"));
　　　　System.out.println("utf-16 : " + getCode("张", "utf-16"));
  System.out.println("utf-8 : " + getCode("张", "utf-8"));
　　}
}

gbk : D5 C5 
gb2312 : D5 C5 
iso-8859-1 : 3F 
unicode : FE FF 5F 20 
utf-16 : FE FF 5F 20 
utf-8 : E5 BC A0 

public class Test {
 public static void main(String[] args) {
  String str = "张";  
 }
}

public class Test { 
 public static void main(String[] args) {
  String str = "张";
  System.out.println(Integer.toHexString(str.codePointAt(0)).toUpperCase());
 }
}