Question

I have two methods like

public void login(String userName, String password)
{

}

public void login(String userName, String password, Object loginOption)
{

}

and I hope to get all of them soloved in a certain method:

public boolean getThingsDone(Object...vargs)
{
    //Do The Real Action
    return true;
}

so I have to make different function call:

public void login(String userName, String password)
{
    getThingsDone(userName,password);
}

public void login(String userName, String password, Object loginOption)
{
    getThingsDone(userName,password,loginOption);
}    

Is there any way that I can put different parameter into one List, so I can make the same call

getThingsDone(parameterList);

I have no idea but declare both method into login(String …vargs), but that will confuse other people use this method.

Is there any one ever meet this problem? Any hint would be appreciated.

Answer 1

You can create a Login class with three attributes: – username, password, loginOption.

public class Login {
    private String username;
    private String password;
    private Object loginOptions;

    // Constructors
    // public accessors.
}

And in your login method pass Login reference as parameter: –

public void login(Login login) {

}

So, if you want to pass loginOptions, call it like this: –

login(new Login(username, password, loginOptions));

else, just use a 2-parameterized constructor of Login class: –

login(new Login(username, password));

And from login method, call other method like this: –

getThingsDone(login);

Now in that method, check : – if (login.getLoginOptions() != null). If it is null, then do things related to username and password. And if it is not null, then do things related to all of them.