1 files changed, 1 insertions, 0 deletions
diff --git a/java/demo/Database/library/ConnectionPool.java b/java/demo/Database/library/ConnectionPool.java
index 069baeea74b..d8879349d25 100644
--- a/java/demo/Database/library/ConnectionPool.java
+++ b/java/demo/Database/library/ConnectionPool.java
@@ -69,6 +69,7 @@ class ConnectionPool
                 // Probe the connection with the database.
                 java.sql.PreparedStatement stmt = conn.prepareStatement("SELECT 1");
                 java.sql.ResultSet rs = stmt.executeQuery();
+                rs.close();
                 stmt.close();
             }
         }