javacollectionswarningsunchecked-conversion

Type safety: The expression of type List needs unchecked conversion to conform to Collection<? extends Object>

I'm using set for defining allowed keys for some action. Eclipse shows this warning:

 Type safety: The expression of type List needs unchecked conversion
 to conform to Collection<? extends Object>


I googled a bit and found same message in slightly different cases but its probably similar problem.
Is any chance get rid of this warning other way then 

 @SuppressWarnings("unchecked")

Is good idea to use 

@SuppressWarnings("unchecked")

in this case?

Here is my code:

  public static final String KEY_A = "A_VALUE";
  public static final String KEY_B = "B_VALUE";

  public static final Set<?> allowedKeys =  new HashSet<Object>(Arrays.asList(new String[] {KEY_A, KEY_B}));
Solution

  • Eclipse did the mess:
    Wrong:

    import edu.emory.mathcs.backport.java.util.Arrays;

    Correct:

    import jave.util.Arrays;


    So code is ok both versions Set<?> and Set<String>. Eclipse just auto imported bad class.