From c1ce1f8f0c8c9ef84d71fbe47ea671adcd87043a Mon Sep 17 00:00:00 2001
From: Roman Ivanov <ivanov-jr@mail.ru>
Date: Sun, 26 Apr 2015 09:49:35 -0700
Subject: [PATCH] fixed violations for PMD rule UseCollectionIsEmpty. Issue
 #744

---
 config/pmd.xml                                                  | 1 -
 .../checks/coding/VariableDeclarationUsageDistanceCheck.java    | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/config/pmd.xml b/config/pmd.xml
index f0b439b9c..25a18dae7 100644
--- a/config/pmd.xml
+++ b/config/pmd.xml
@@ -121,7 +121,6 @@
     <exclude name="UncommentedEmptyMethod"/>
     <!-- till #996 -->
     <exclude name="PreserveStackTrace"/>
-    <exclude name="UseCollectionIsEmpty"/>
     <exclude name="EmptyMethodInAbstractClassShouldBeAbstract"/>
     <exclude name="SingularField"/>
     <exclude name="TooFewBranchesForASwitchStatement"/>
diff --git a/src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java b/src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java
index ba8480cc0..a60bafb9b 100644
--- a/src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java
+++ b/src/main/java/com/puppycrawl/tools/checkstyle/checks/coding/VariableDeclarationUsageDistanceCheck.java
@@ -487,7 +487,7 @@ public class VariableDeclarationUsageDistanceCheck extends Check
                     }
                     // If expression doesn't contain variable and this variable
                     // hasn't been met yet, than distance + 1.
-                    else if (variableUsageExpressions.size() == 0
+                    else if (variableUsageExpressions.isEmpty()
                             && currentStatementAst.getType() != TokenTypes.VARIABLE_DEF)
                     {
                         dist++;