quick question on vectors

[carpeliam]

this is a really simple question, but it escapes me at the moment, and I don't have a book with me.<br><br>Do all objects inside of a vector need to be of the same type?<br><br>Thanks.. <p>Liam Morley<br><a href=mailto:lmorley@wpi.edu>lmorley@wpi.edu</a><br><a href=

http://www.wpi.edu/~lmorley/>

] :: imotic :: website :: [</a><br>"light the deep, and bring silence to the world.<br>
light the world, and bring depth to the silence."

 

[fenris]

I have just finished playing with vectors. To answer your question, technically yes. They have to be of type object <br><br><br> <p> fenris<br><a href=mailto:fenris@hotmail.com>fenris@hotmail.com</a><br><a href= > </a><br> I am interested in Mining Software, as well as Genetic Algorithms.

 

[carpeliam]

*smile* thanks.. but you can have objects of different types, say an object of type java.awt.Button in the same vector as java.awt.TextArea ?<br><br>thanks again... <p>Liam Morley<br><a href=mailto:lmorley@wpi.edu>lmorley@wpi.edu</a><br><a href=

http://www.wpi.edu/~lmorley/>

] :: imotic :: website :: [</a><br>"light the deep, and bring silence to the world.<br>
light the world, and bring depth to the silence."

 

[fenris]

From what I understand you can have different objects within the vector. In the info that I have read, that is one of the things that you have to watch for. The other thing that I have read is that ever object is of type object. for example:<br><br>if you have a class foo, then you extend duck from foo, then duck could also be considered an object of type foo.<br><br>public class foo<br>{<br>&nbsp;&nbsp;//stuff in here<br>}<br><br>public class duck extends foo<br>{<br>//stuff in here<br>}<br><br>What you could do with this is create an array of type foo<br><br>foo test1 = new foo();<br>duck test2 = new duck();<br><br>foo[] test = new foo[2]<br><br>foo[0] = test1;<br>foo[1] = test2;<br><br>This is similar to what happens with a vector, except the objects don't have to be related as directly as above (as far as I know). I should have been a little more clear on the last post, I hope this helps.<br><br> <p> fenris<br><a href=mailto:fenris@hotmail.com>fenris@hotmail.com</a><br><a href= > </a><br> I am interested in Mining Software, as well as Genetic Algorithms.

 

[carpeliam]

well everything must be of type &quot;Object&quot; just because of polymorphism- since every class must inherit from object somehow, everything is an object, and so everything can be referred to by &quot;Object&quot;.<br><br>Basically, what I meant was this... you can't have an array that includes a mixture of ints and reals. But can you have a vector of ints and reals.<br><br>So that would mean that you can't have an array of foos and ducks... So I don't think that would work. <p>Liam Morley<br><a href=mailto:lmorley@wpi.edu>lmorley@wpi.edu</a><br><a href=

http://www.wpi.edu/~lmorley/>

] :: imotic :: website :: [</a><br>"light the deep, and bring silence to the world.<br>
light the world, and bring depth to the silence."

 

[JCCC]

I believe you can have a Vector of Foos and ducks.&nbsp;&nbsp;They are all objects.&nbsp;&nbsp;You must know how to cast them back to a foo and a duck so you can use them.

 

[calahans]

you can have any type of objects in a vector, or any mix in the same vector...you just need to cast them back correctly when you are reading them <p>Cal<br><a href=mailto: > </a><br><a href= > </a><br>