--- jsr166/src/test/tck/ExecutorCompletionService9Test.java	2016/11/06 22:42:10	1.7
+++ jsr166/src/test/tck/ExecutorCompletionService9Test.java	2021/01/27 01:57:24	1.9
@@ -10,7 +10,6 @@ import java.util.Collection;
 import java.util.Comparator;
 import java.util.List;
 import java.util.Set;
-import java.util.HashSet;
 import java.util.concurrent.Callable;
 import java.util.concurrent.CompletionService;
 import java.util.concurrent.ExecutionException;
@@ -72,7 +71,7 @@ public class ExecutorCompletionService9T
     ArrayList<Integer> results;
 
     void use(Integer x) {
-        if (results == null) results = new ArrayList<Integer>();
+        if (results == null) results = new ArrayList<>();
         results.add(x);
     }