java generics return an array -

Edit: I do not think how the second question gives me an answer. I already have a clear artist (e []), who is not the author of the second question. I also tried something like seq1 = (integer []) iw.result (); But that does not work either.

I have the following code:

  Public class is something comparative & lt; E & gt; & Gt; {E] [] Sack; Some public () {seq = (e []) new object [100]; } Public E [] results () {Return sequence; } Public static zero main (string [] args) {some & lt; Integer & gt; Iw = new something & lt; Integer & gt; (); Integer [] sAC1 = new integer [100]; Seq1 = iw.result (); }}  

I get a misunderstanding in this way: [Object can not be inserted in [Comparative

, so I change some-maker to:

  seq = (e []) new comparative [100];  

Now I get a misunderstanding in this way: [Comparative can not be inserted into [integer]

Is there any way to work above code? I know I'm better off working with collections, but I'm just curious what's wrong with my code.

Here are some problems.

First of all, this is not an unlimited general parameter; enclosed comparative .

During the extinction of type, your class has been declared as:

  public class something & lt; E comparative & lt; E & gt; & Gt; {E] [] Sack; }  

... is bound to e comparative .

  public squares some {comparative [] Seq; }  

This therefore your casting is not working, because object is not a comparable . You want to use the new comparative instead.

  public class something & lt; E extractable comparative & lt; E & gt; & Gt; {E] [] Sack; Some public () {seq = (e []) new comparative [100]; }}  

Now, Java and should break on the previous two statements.

  integer [] seq1 = new integer [100]; Seq1 = iw.result ();  

is bound to iw.result () comparative [] , not integer [] . A comparative [] can never become a integer [] .

You can do this instead to leave ClassCastException :

  comparative [] seq1 = new integer [100];  

This will work since a integer is comparative . This is due to the fact that arrays are co-sensation (which is a subtype of a integer [a] a comparable [] ).