code: private String escapeSpecialCharacters(final String string) {
  		final StringBuilder escaped = new StringBuilder();
  		for (final char character : string.toCharArray()) {
  			if (character == '%' || character == '_' || character == '\\') {
  				escaped.append('\\');
  			}
  			escaped.append(character);
  		}
  		return escaped.toString();
  	}
docs: Escapes special characters which could be used in an operand of LIKE operator
  
  @param string
  @return