Java byte-length character string calculated

   In the " intercepts string length from back to front ," describes how to intercept the string, statistical article describes how the byte length of the string.

 

Import org.slf4j.Logger;
 Import org.slf4j.LoggerFactory; 

Import java.io.UnsupportedEncodingException; 


public  class a GetLength {
     Private  static  Final Logger Logger = LoggerFactory.getLogger (a GetLength. class ); 


    // encoding 
    Private  static  Final String = ENCODE_UTF "UTF-. 8" ; 


    / ** 
     byte length <br/> * calculation English string 
     * a Chinese 3 bytes 
     * 
     * @param STR 
     * @return int byte length of the string
      * / 
    public  static  intgetLength (String STR) {
         IF (STR == null || str.length () == 0 ) {
             return 0 ; 
        } 
        the try {
             return str.getBytes (ENCODE_UTF) .length; 
        } the catch (UnsupportedEncodingException E) { 
            logger.error ( "byte string length calculated failure in English," , E); 
        } 
        return 0 ; 
    } 




    / ** 
     * calculation English string length in bytes 
     * 
     * @param STR 
     * @return int
      * / 
    public  static int getStrLength (String STR) {
         IF (STR == null || str.length () == 0 ) {
             return 0 ; 
        } 
        int len = 0 ;
         for ( int I = 0, J = str.length (); I <J; I ++ ) {
             // UTF encoding format. 8-Chinese accounted three bytes, GBK Chinese encoding format is two bytes; 
            len + = (str.charAt (I)> 255. 3:?. 1 ); 
        } 
        return len; 
    } 


    public  static  void main (String [] args) { 
        String STR = "Agricultural Bank 3Wiener, pay dense" ;
        System.out.println(getLength(str));
        System.out.println(getStrLength(str));
    }
    
}