From b694c32d41eeb5e21e1dbc545bf78b0951663689 Mon Sep 17 00:00:00 2001
From: oblonski <jsprit.vehicle.routing@gmail.com>
Date: Wed, 26 Apr 2017 17:03:42 +0200
Subject: [PATCH] streamline RuinString

---
 .../graphhopper/jsprit/core/algorithm/ruin/RuinString.java  | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/jsprit-core/src/main/java/com/graphhopper/jsprit/core/algorithm/ruin/RuinString.java b/jsprit-core/src/main/java/com/graphhopper/jsprit/core/algorithm/ruin/RuinString.java
index 8341ddd4..ff6155ee 100644
--- a/jsprit-core/src/main/java/com/graphhopper/jsprit/core/algorithm/ruin/RuinString.java
+++ b/jsprit-core/src/main/java/com/graphhopper/jsprit/core/algorithm/ruin/RuinString.java
@@ -44,11 +44,11 @@ import java.util.*;
  */
 public final class RuinString extends AbstractRuinStrategy {
 
-    private Logger logger = LoggerFactory.getLogger(RuinString.class);
+    private static Logger logger = LoggerFactory.getLogger(RuinString.class);
 
-    private VehicleRoutingProblem vrp;
+    private final VehicleRoutingProblem vrp;
 
-    private JobNeighborhoods jobNeighborhoods;
+    private final JobNeighborhoods jobNeighborhoods;
 
     private int kMin = 1;