ICU-21308 Fix icu4j build for Java 7 in MeasureUnitImpl

See unicode-org#1428
tarekgh · Oct 22, 2020 · dd87efa · dd87efa
1 parent 340271c
commit dd87efa
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/icu4j/main/classes/core/src/com/ibm/icu/impl/units/MeasureUnitImpl.java b/icu4j/main/classes/core/src/com/ibm/icu/impl/units/MeasureUnitImpl.java
@@ -4,6 +4,7 @@
 
 import java.math.BigDecimal;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.Comparator;
 
 import com.ibm.icu.util.BytesTrie;
@@ -224,7 +225,7 @@ public void serialize() {
         }
         if (this.complexity == MeasureUnit.Complexity.COMPOUND) {
             // Note: don't sort a MIXED unit
-            this.getSingleUnits().sort(new SingleUnitComparator());
+            Collections.sort(this.getSingleUnits(), new SingleUnitComparator());
         }
 
         StringBuilder result = new StringBuilder();