vector or list or ?

[nimo frey]

I need a Datastructure, that can hold various datatypes.

for example:

myContainer has a Array of {(1,1 "hello"), (1,2 "bye"), ..}

Is that Datastructure right or should I use other kinds?

List<Long, Float, String> myContainer = new ArrayList<Long, Float, String>();

[Ulf Dittmer]

A List can only hold a single type, not multiple types. How about creating a class that has fields for those 3 types, and then keeping that in the List?

[nimo frey]

Yes, that would works, but is there another possibiltity without creating a class - only via using Datastructures:

Something like List<Object[]>

[Campbell Ritchie]

You want a class which can encapsulate a long, a float and a String, then create a List of that class.
Oh, that's what Ulf has already said. Sorry.

[Jesper de Jong]

You could ofcourse use List<Object[]> but that would not be really type-safe. If the things you want to store are always triplets of Long, Float and String, then when you use a List<Object[]> the compiler will not be able to check that for you, and you might inadvertently put an Object[] into the list that contains something else than a Long, Float and String.

[nimo frey]

Okay, it s reasonable to do a class:

List<MyClass> ...


thanks

[Campbell Ritchie]

You're welcome.

public class Tuple3
{
   private long wholeNumber;
   private float fractionalNumber;
   private String word;

   public Tuple3(long whole, float fraction, String text)
   {
       //You can doubtless work out the rest for yourself.
   }
}//end class

[nimo frey]

thank you!