ListIterator problem

[shaolinf]

Hi guys,

Im using a vector to store my data and when I want to print it, it outputs the following:

FT@19821f
FT@addbf1

Here is the method and the call:

Method in directory class:

public void display()
{
ListIterator vIter = vec.listIterator() ;
while ( vIter.hasNext() )
{
System.out.println( vIter.next() ) ;
}
}

Call from Main class:

Directory d = new Directory() ;

d.add( "myname",1 ) ;
d.add( "yourname",2) ;

d.display() ; // Output data

 

[jaxtell]

How about

System.out.println((String)(vIter.next()));

 

[Diancecht]

Difficult to guess without the code that adds the elements to the Vector, ie, the add() method. Are you adding the strings or the numbers?

 

[stefanwagner]

You didn't overwrite the toString () - method of Object in Directory, so you get what is defined there: a hashcode of your object.

Overwrite String toString () to return, what you want.

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[Diancecht]

I think I disagree. If it's a String, the toString method will return the String itself, not a hashcode.

Cheers,
Dian

 

[stefanwagner]

@diancecht: Yes. If it's a string.

Conclusio: It's not a string.
Maybe it's not a Directory, but something else.
Data?

We know: Directory has a vector to store Data.
Directory has an add-Method (Sting, int) to ...? - maybe to store something at an specific index - maybe to store an Object which is generated on the fly in the add-Method:

add (String s, int i)
{
        vec.add (new Data (s, i)); 
}

If you would store simple Strings in the vector, you would use add (int index, Sting s) as Vector does - not the other way round, and you would start with 0, not 1.
And the method would print "myname\nyourname" - not a hashcode.

Maybe shaolinf switches the order of index and object in the add-Method, and maybe he's counting from 1 instead of 0.

But a Vector of Strings wouldn't print hashcodes.

Maybe I didn't get your argument.

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[Diancecht]

That was exactly what I was trying to say: we need to see the add() method to know what's being added. And from the println out, it's not a String.

Cheers,
Dian

 

[stefanwagner]

Correction: The object in the vector seems to be a FT, not a Directory itself or a Data-Object.

So FT.toString () has to be overwritten.

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