public static int charLength(CharSequence str) {
        int clength = 0;
        for (int i = 0; i < str.length(); i++) {
            clength += isFullWidthCharacter(str.charAt(i)) ? 2 : 1;
        }
        return clength;
    }
public static int charLength(CharSequence str) {
        int clength = 0;
        for (int i = 0; i < str.length(); i++) {
            clength += isFullWidthCharacter(str.charAt(i)) ? 2 : 1;
        }
        return clength;
    }
public static int charLength ( CharSequence str ) { int clength = 0 ; for ( int i = 0 ; i < str . length ( ) ; i ++ ) { clength += isFullWidthCharacter ( str . charAt ( i ) ) ? 2 : 1 ; } return clength ; }
计算字符串的字符长度(全角算2, 半角算1)

@param str
被计算的字符串
@return 字符串的字符长度
计算字符串的字符长度 ( 全角算2 半角算1 )