code: @Override
  	public void setText(String body) throws JMSException
      {
      	if (bodyIsReadOnly)
              throw new MessageNotWriteableException("Message body is read-only");
          
      	assertDeserializationLevel(MessageSerializationLevel.FULL);
      	
          this.body = body;
      }
docs: /*
  (non-Javadoc)
  @see javax.jms.TextMessage#setText(java.lang.String)