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import java.util.List;
import java.util.Iterator;
import java.util.ArrayList;
 
class FooDemo
{
  public static void doFoos(List<? implements Fooable> fooers)
  {
    Iterator<? extends Fooable> it = fooers.iterator();
    while(it.hasNext())
    {
      it.next().foo();
    }
  }
  public static void main(String[] args)
  {
    List<ConcreteFoo> myfoos = new ArrayList<ConcreteFoo>();
    myfoos.add(new ConcreteFoo());
    doFoos(myfoos);
  }
}
 
interface Fooable
{
  void foo();
}
 
class ConcreteFoo implements Fooable
{
  public void foo()
  {
    System.out.println("Foo!\n");
  }
}
 

Main.java:7: error: > expected
  public static void doFoos(List<? implements Fooable> fooers)
                                   ^
Main.java:7: error: ')' expected
  public static void doFoos(List<? implements Fooable> fooers)
                                             ^
Main.java:7: error: ';' expected
  public static void doFoos(List<? implements Fooable> fooers)
                                                     ^
Main.java:7: error: <identifier> expected
  public static void doFoos(List<? implements Fooable> fooers)
                                                             ^
4 errors

Standard output is empty