ICU-11760 Fixed a build error with Java 5 runtime.

X-SVN-Rev: 37813

diff --git a/icu4j/main/classes/core/src/com/ibm/icu/text/NFSubstitution.java b/icu4j/main/classes/core/src/com/ibm/icu/text/NFSubstitution.java
index e63aa7fd0a048298ac9d01c20f3376e5709436c0..bf5d1e8ce3794133607bf03664e0f0ee49f891cb 100644 (file)
--- a/icu4j/main/classes/core/src/com/ibm/icu/text/NFSubstitution.java
+++ b/icu4j/main/classes/core/src/com/ibm/icu/text/NFSubstitution.java
@@ -175,7 +175,7 @@ abstract class NFSubstitution {
         // if the description was just two paired token characters
         // (i.e., "<<" or ">>"), it uses the rule set it belongs to to
         // format its result
-        if (description.isEmpty()) {
+        if (description.length() == 0) {
             this.ruleSet = ruleSet;
             this.numberFormat = null;
         }