make/src/classes/build/tools/tzdb/TzdbZoneRulesCompiler.java

@@ -64,11 +64,11 @@
 import java.nio.file.Paths;
 import java.text.ParsePosition;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
-import java.util.HashSet;
+import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.NoSuchElementException;
 import java.util.Scanner;
 import java.util.SortedMap;

@@ -255,11 +255,11 @@
             out.writeShort(regionArray.length);
             for (String regionId : regionArray) {
                 out.writeUTF(regionId);
             }
             // rules  -- hashset -> remove the dup
-            List<ZoneRules> rulesList = new ArrayList<>(new HashSet<>(builtZones.values()));
+            List<ZoneRules> rulesList = new ArrayList<>(new LinkedHashSet<>(builtZones.values()));
             out.writeShort(rulesList.size());
             ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
             for (ZoneRules rules : rulesList) {
                 baos.reset();
                 DataOutputStream dataos = new DataOutputStream(baos);