I have a question about Struts 2.0 Action,I find Action will extends
ActionSupport,like follows:
public class GetUpdatedHangmanAction extends ActionSupport implements
SessionAware {
private static final long serialVersionUID = 5506025785406043027L;
.....I am puzzled with variable serialVersionUID,I want to know if this variable is necessary for Action,if it is necessary,how to calculate the value of serialVersionUID,why it is equals 5506025785406043027? Anyone can give me some advice? Thanks
