LinkedList

[filipe29]

Hi.I want to return a value inside of a LinkedList with the method get,i have:

this.sentidoActual =(int)sentidos.get(8);

sentidoActual is a integer and when i do that i receive the following error:

"Formiga.java": inconvertible types; found : java.lang.Object, required: int at line 23, column 46

 

[sedj]

Use this :

this.sentidoActual =((Integer)sentidos.get(8)).intValue();

You cannot cast between objects and primitive data types. You must first cast the Object to an Integer object, and then extract the primitive int from that.

--------------------------------------------------
Free Java/J2EE Database Connection Pooling Software

http://www.primrose.org.uk

 

[filipe29]

Yes but how do i do this:

if (sentidoActual==0)...

I test with intValue()but dont work.

 

[sedj]

Well thats not what you actually asked was it ? You asked how to convert a value stored as an Object into an int.

I don' really understand what you mean by your second question ... perhaps you should explain what exactly you are trying to do.

--------------------------------------------------
Free Java/J2EE Database Connection Pooling Software

http://www.primrose.org.uk

 

[filipe29]

Ok.What im trying to do is a linkedlist of an integer values.I have:

private static LinkedList sentidos= new LinkedList();
for (int i=0;i<8;i++) sentidos.add(new Integer(i));

Now i want to check if the index of the linkedlist has the integer 0 for example.

 

[sedj]

So :

for (int i = 0;  ... rip through list ...) {
  int val = ((Integer)sentidos.get(i)).intValue();
  if (val == ) {
    // bla
  } else {
    // bla bla
  }
}

--------------------------------------------------
Free Java/J2EE Database Connection Pooling Software

http://www.primrose.org.uk

 

[filipe29]

Ok.Thanks.By the way how can i do a next of a linkedlist and return the value?

Like this:

sentidos.iterator().next();
sentidoActual.intvalue()=sentidos.get("index");

Thanks

 

[sedj]

Not sure what you are asking really ...

This is one way of walking through a LinkedList object :

for (int i = 0; i < sentidos.size(); i++) {
  int val = ((Integer)sentidos.get(i)).intValue();
  if (val == 0) {
    // bla
  } else {
    // bla bla
  }
}

--------------------------------------------------
Free Java/J2EE Database Connection Pooling Software

http://www.primrose.org.uk

 

[filipe29]

I have made it.Thanks.Do you know how to put the LinkedList circular??

 

[Diancecht]

For example:

http://www.geocities.com/applets4ever/sourcecodeindex.html

Cheers,
Dian