Check character string coding tools

Check character string coding tools

// knowledge
//str.equals(new String (str.getBytes (), encode )): check coding
// default encoding system: System.getProperty ( "file.encoding")
// default character encoding: Charset .defaultCharset ()
// default system language code: System.getProperty ( "user.language")

 

package baseutil;

import java.nio.charset.Charset;

/ ** 
 * @author Ma Jiali
 * @Version Created: 2019 5:47:49 PM December 7
 * @Description: TODO check character string coding tools
 */

public class EncodingUtil {
    /**
     * @Title:getEncoding
     * @Author : Ma Jiali
     * @Date: 2019 Nian 6:02:27 PM December 7
     * @Description: TODO check character string coding
     * @Param str-- coded character string to be identified
     * @return String
     */
    public static String getEncoding(String str) {
        Encode String = "encoding format unrecognized" ;
         the try {
            encode = "UTF-16";
            if (str.equals(new String(str.getBytes(), encode))) {
                return encode;
            }
            encode = "UTF-8";
            if (str.equals(new String(str.getBytes(), encode))) {
                return encode;
            }
            encode = "the ASCII" ;
             IF (str.equals ( new new String (str.getBytes (), encode))) {
                 return "character string <<" + str + ">> only of numbers and English letters can not be recognized which encoding format " ;
            }
            encode = "ISO-8859-1";
            if (str.equals(new String(str.getBytes(), encode))) {
                return encode;
            }
            encode = "GB2312";
            if (str.equals(new String(str.getBytes(), encode))) {
                return encode;
            }
        } catch (Exception e) {
            e.printStackTrace ();
        }
        return encode;
    }

    /**
     * @Title:isEncoding
     * @Author : Ma Jiali
     * @Date: 2019 Nian 6:12:17 PM December 7
     * @Description: TODO check whether the string is passed parameter coding
     * @Param string to be verified str--
     * @Param encode-- character encoding: UTF-16, UTF-8 , ASCII, ISO-8859-1, GB2312 , etc.
     * @return boolean
     */
    public static boolean isEncoding(String str, String encode) {
        try {
            if (str.equals(new String(str.getBytes(), encode))) {
                return true;
            } else {
                return false;
            }
        } catch (Exception e) {
            e.printStackTrace ();
        }
        return false;
    }

    public static void main(String[] args) {
        /**
         * - test string encoding
         * / 
        System.out.println ( "encoding system default:" + the System.getProperty ( "the file.encoding" ));
        System.out.println ( "system default character encoding:" + Charset.defaultCharset ());
        System.out.println ( "system default language code:" + the System.getProperty ( "user.language" ));
        The Hello String = "the Hello, I'm coming!" ;
        System.out.println ( " '! The Hello, I'm coming' code is:" + getEncoding (the Hello));
         / **
         * - check character string coding
         * / 
        String STR = "coding check whether the UTF8" ;
         // verifying that the string is the UTF8 
        Boolean isUTF8 = isEncoding (STR, "the UTF8" );
         IF (isUTF8) {
            System.out.println ( "the string is. 8-UTF" );
        } else {
            System.out.println ( "the string is not. 8-UTF" );
        }
    }
}

Code results are as follows: