protected static StringBuilder toUppercase(final StringBuilder string) {
		final int strLen = string.length();

		for (int i = 0; i < strLen; i++) {
			char c = string.charAt(i);

			char uppercaseChar = Character.toUpperCase(c);
			if (c != uppercaseChar) {
				string.setCharAt(i, uppercaseChar);
			}
		}
		return string;
	}
protected static StringBuilder toUppercase(final StringBuilder string) {
		final int strLen = string.length();

		for (int i = 0; i < strLen; i++) {
			char c = string.charAt(i);

			char uppercaseChar = Character.toUpperCase(c);
			if (c != uppercaseChar) {
				string.setCharAt(i, uppercaseChar);
			}
		}
		return string;
	}
protected static StringBuilder toUppercase ( final StringBuilder string ) { final int strLen = string . length ( ) ; for ( int i = 0 ; i < strLen ; i ++ ) { char c = string . charAt ( i ) ; char uppercaseChar = Character . toUpperCase ( c ) ; if ( c != uppercaseChar ) { string . setCharAt ( i , uppercaseChar ) ; } } return string ; }
---------------------------------------------------------------- util methods
---------------------------------------------------------------- util methods