From 4a9d2bd0b8e9a383e33063dee8f6f54af3c55b28 Mon Sep 17 00:00:00 2001
From: Rich Gillam <62772518+richgillam@users.noreply.github.com>
Date: Fri, 20 Aug 2021 10:28:02 -0700
Subject: [PATCH] ICU-21584 Fixed Java7 build error in earlier fix.

---
 .../tests/core/src/com/ibm/icu/dev/test/util/RegionTest.java    | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/util/RegionTest.java b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/util/RegionTest.java
index 67710cc8a78..0e908ae02b5 100644
--- a/icu4j/main/tests/core/src/com/ibm/icu/dev/test/util/RegionTest.java
+++ b/icu4j/main/tests/core/src/com/ibm/icu/dev/test/util/RegionTest.java
@@ -609,7 +609,7 @@ public class RegionTest extends TestFmwk {
                 for (Region childRegion : actualChildren) {
                     actualChildIDs.add(childRegion.toString());
                 }
-                actualChildIDs.sort(null);
+                java.util.Collections.sort(actualChildIDs);
                 
                 for (int i = 0; i < actualChildIDs.size() && i < expectedChildren.length; i++) {
                     if (!expectedChildren[i].equals(actualChildIDs.get(i))) {
-- 
2.40.0