Iterating over a vactor with objects

[Stovio]

Hi,

This is probably really easy for many of you but i have failed to find the solution. I want to iterate over a vector containing objects of a class i have defined. In every iteration I want to print out some of the member variables of the object. Now, every example i have come across simply casts the entire object in the vector to a String but that is not possible when the objects contains various variables. I was hoping for something as simple as this, but it does nt work:

public Vector getDiscoveryResult(){
Iterator i = servers.listIterator();
while(i.hasNext()){
ServerInfo s = i.next(); //error
System.out.println("IP: " + s.address + ", PORT: " + s.port);
}
return servers;
}

Thanks for any help.

/H

 

[Stovio]

Servers is a vector containing ServerInfo objects. ServerInfo contains only the variables address and port.

 

[Diancecht]

You need to cast the object.

ServerInfo s = (ServerInfo) i.next();

After that, you can access the variables, if they are public.

Cheers.

Dian

 

[Stovio]

Thanks mate.

 

[sedj]

Change :

ServerInfo s = i.next(); //error

to

ServerInfo s = (ServerInfo)i.next(); //error

i.next() returns an Object - so you must cast it to your particular object.

Or you could write a toString() and override the Object.toString() method which prints out what you want.

So the code would then look like :

Object s = i.next();
System.out.println(s);



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[sedj]

oops, posting at the same time there Dian.

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