Collections mock question

[adam Lui]

import java.util.*;
class ForTest{
static List list = new ArrayList();
static List getList() {return list;}
public static void main (String[] args) {
list.add("Ready");
list.add("Set");
list.add("Go");

for (List obj:getList()) //line 10
System.out.println(obj);
}
}

why would line 10 generate compatible error?!

[sathi jogi]

hi,

here you are trying to retrieve the list objects from the arraylist, that is not right, you are retrieving objects from the list,

so modify the line 10 as given below,

for (Object obj:getList()) //line 10
System.out.println(obj);
}

[adam Lui]

so we use ....
for (Object obj: getlist())

wat about ...
for (ArrayList obj: getList())

possible?

[al nik]

it's possible if for example your getList() method returns a "List of ArrayList"

    
public List<ArrayList> getList() {
...
}
 
...
for (ArrayList list : getList()) {
...
}

but this is not your case..
[ October 21, 2007: Message edited by: al nik ]