The type Collection is not generic; it cannot be parameterized with arguments <? extends E>

Question

I have a strange problem with Eclipse Galileo.
I set Java 1.6 as my JRE. On this line of code

List templates = new ArrayList ();

I see

Answer 1

Try to remove import antlr.collections.List; and click Ctr+space to use java.util

Answer 2

I changed the import

   import javax.swing.text.html.HTMLDocument.Iterator;

to

   import java.util.Iterator;

then it worked for me

Answer 3

put the entry "JRE System Library..." at the top in project, properties, java build path, order and export

Answer 4

For those, who will get there from Google: the problem was with cryptix library. When I removed it from java build path the project is compiled sucesfully.

Answer 5

use "import java.util.List"

instead of default import "import antlr.collections.List;"

and use the JRE5 or above for generic support of collection API....

Answer 6

for example:

public class AClass<T extends Object>
{
 public HashMap<String, String> myMap;
}

if I write:

public class BClass
{

private AClass aClass = new AClass();

public void test()
{

aClass.get("test");
//return Object class

}

}

but if I write:

public class BClass
{

private AClass<?,?> aClass = new AClass<?,?>();

public void test()
{

aClass.get("test");
//return String class

}

}