About Question enthuware.ocpjp.v7.2.1310 :

[jaypi]

This is a valid (yet refused) answer:

Code: Select all

public class TestClass {

	public static void main(String[] args) {
		Set<String> holder = new TreeSet<>();
		holder.add("tom");
		holder.add("dick");
		holder.add("harry");
		holder.add("tom");
		printIt(holder);
	}

	public static void printIt(Collection<String> list) {
		for (String s: list) System.out.println(s);
	}

}

[admin]

Yes, it is valid but you need to fill all the yellow drag targets. So you need to put TreeSet<String> instead of TreeSet<>.

HTH,
Paul.

[bluster]

My compiler was happy with this (rebuffed) one, producing the expected output.

Code: Select all

public class TestClass {

   public static void main(String[] args) {
      Set<String> holder = new TreeSet<String>();
      holder.add("tom");
      holder.add("dick");
      holder.add("harry");
      holder.add("tom");
      printIt(holder);
   }

   public static void printIt(Collection<String> list) {
      for (String s: list) System.out.println(s);
   }

}

Also, the solution filled all the yellow drag targets. Thirdly, the explanation goes with

can be Collection<String> or any subclass of Collection<String> such as Set<String>.

Can someone tell me what condition was not fulfilled to have the answer considered OK? Thanks!

[admin]

I tried the same and it was evaluated as correct. May be you had a typo in TreeSet?
-Paul.

[bluster]

It could have been that. Thanks for checking!

[AndaRO]

I can't drag 'Set' keyword.

[admin]

I tried it just now. Seems to be working fine. Try taking it close to the yellow target and it should go there.
-Paul.