Index: applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/FullGraphCreationTest.java
===================================================================
--- applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/FullGraphCreationTest.java	(revision 32326)
+++ applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/FullGraphCreationTest.java	(revision 32620)
@@ -1,2 +1,3 @@
+// License: GPL. For details, see LICENSE file.
 package org.openstreetmap.josm.plugins.graphview.core;
 
@@ -4,7 +5,9 @@
 
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.LinkedList;
+import java.util.List;
 import java.util.Map;
 
@@ -49,11 +52,16 @@
 
     private static final AccessRuleset TEST_RULESET = new AccessRuleset() {
+        @Override
         public java.util.List<String> getAccessHierarchyAncestors(String transportMode) {
             return Arrays.asList(transportMode);
         }
-        public java.util.Collection<Tag> getBaseTags() {
+
+        @Override
+        public Collection<Tag> getBaseTags() {
             return Arrays.asList(new Tag("highway", "test"));
         }
-        public java.util.List<Implication> getImplications() {
+
+        @Override
+        public List<Implication> getImplications() {
             return new LinkedList<>();
         }
@@ -174,5 +182,5 @@
         while (iterator.hasNext()) {
             iterator.next();
-            size ++;
+            size++;
         }
         return size;
Index: applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/TestDataSource.java
===================================================================
--- applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/TestDataSource.java	(revision 32326)
+++ applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/TestDataSource.java	(revision 32620)
@@ -1,2 +1,3 @@
+// License: GPL. For details, see LICENSE file.
 package org.openstreetmap.josm.plugins.graphview.core;
 
@@ -12,9 +13,10 @@
 import org.openstreetmap.josm.plugins.graphview.core.data.TagGroup;
 
-public class TestDataSource implements DataSource<TestDataSource.TestNode, TestDataSource.TestWay, TestDataSource.TestRelation, TestDataSource.TestRelationMember> {
+public class TestDataSource
+implements DataSource<TestDataSource.TestNode, TestDataSource.TestWay, TestDataSource.TestRelation, TestDataSource.TestRelationMember> {
 
     public static class TestPrimitive {
         public final Map<String, String> tags = new HashMap<>();
-    };
+    }
 
     public static class TestNode extends TestPrimitive {
@@ -24,8 +26,10 @@
             this(0, 0);
         }
+
         public TestNode(double lat, double lon) {
             this.lat = lat;
             this.lon = lon;
         }
+
         @Override
         public String toString() {
@@ -57,10 +61,13 @@
             this.member = member;
         }
+
         public TestPrimitive getMember() {
             return member;
         }
+
         public String getRole() {
             return role;
         }
+
         @Override
         public String toString() {
@@ -74,68 +81,85 @@
     public final Collection<TestRelation> relations = new LinkedList<>();
 
-
+    @Override
     public double getLat(TestNode node) {
         return node.lat;
     }
+
+    @Override
     public double getLon(TestNode node) {
         return node.lon;
     }
 
+    @Override
     public Iterable<TestRelationMember> getMembers(TestRelation relation) {
         return relation.members;
     }
 
+    @Override
     public Iterable<TestNode> getNodes() {
         return nodes;
     }
 
+    @Override
     public Iterable<TestNode> getNodes(TestWay way) {
         return way.nodes;
     }
 
+    @Override
     public Iterable<TestWay> getWays() {
         return ways;
     }
 
+    @Override
     public Iterable<TestRelation> getRelations() {
         return relations;
     }
 
+    @Override
     public TagGroup getTagsN(TestNode node) {
         return new MapBasedTagGroup(node.tags);
     }
 
+    @Override
     public TagGroup getTagsW(TestWay way) {
         return new MapBasedTagGroup(way.tags);
     }
 
+    @Override
     public TagGroup getTagsR(TestRelation relation) {
         return new MapBasedTagGroup(relation.tags);
     }
 
+    @Override
     public Object getMember(TestRelationMember member) {
         return member.getMember();
     }
 
+    @Override
     public String getRole(TestRelationMember member) {
         return member.getRole();
     }
 
+    @Override
     public boolean isNMember(TestRelationMember member) {
         return member.getMember() instanceof TestNode;
     }
 
+    @Override
     public boolean isWMember(TestRelationMember member) {
         return member.getMember() instanceof TestWay;
     }
 
+    @Override
     public boolean isRMember(TestRelationMember member) {
         return member.getMember() instanceof TestRelation;
     }
 
+    @Override
     public void addObserver(DataSourceObserver observer) {
         // not needed for test
     }
 
+    @Override
     public void deleteObserver(DataSourceObserver observer) {
         // not needed for test
Index: applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/access/AccessRulesetReaderTest.java
===================================================================
--- applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/access/AccessRulesetReaderTest.java	(revision 32326)
+++ applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/access/AccessRulesetReaderTest.java	(revision 32620)
@@ -1,2 +1,3 @@
+// License: GPL. For details, see LICENSE file.
 package org.openstreetmap.josm.plugins.graphview.core.access;
 
Index: applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/property/RoadInclineTest.java
===================================================================
--- applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/property/RoadInclineTest.java	(revision 32326)
+++ applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/property/RoadInclineTest.java	(revision 32620)
@@ -1,2 +1,3 @@
+// License: GPL. For details, see LICENSE file.
 package org.openstreetmap.josm.plugins.graphview.core.property;
 
Index: applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/property/RoadMaxspeedTest.java
===================================================================
--- applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/property/RoadMaxspeedTest.java	(revision 32326)
+++ applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/property/RoadMaxspeedTest.java	(revision 32620)
@@ -1,2 +1,3 @@
+// License: GPL. For details, see LICENSE file.
 package org.openstreetmap.josm.plugins.graphview.core.property;
 
@@ -7,5 +8,5 @@
 
     private static void testMaxspeed(float expectedMaxspeed, String maxspeedString) {
-        testEvaluateBoth(new RoadMaxspeed(),    expectedMaxspeed, new Tag("maxspeed", maxspeedString));
+        testEvaluateBoth(new RoadMaxspeed(), expectedMaxspeed, new Tag("maxspeed", maxspeedString));
     }
 
@@ -29,4 +30,3 @@
         testMaxspeed(24.14016f, "15 mph");
     }
-
 }
Index: applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/property/RoadPropertyTest.java
===================================================================
--- applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/property/RoadPropertyTest.java	(revision 32326)
+++ applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/property/RoadPropertyTest.java	(revision 32620)
@@ -1,2 +1,3 @@
+// License: GPL. For details, see LICENSE file.
 package org.openstreetmap.josm.plugins.graphview.core.property;
 
@@ -8,5 +9,5 @@
 
 @Ignore("no test")
-abstract public class RoadPropertyTest {
+public abstract class RoadPropertyTest {
 
     protected static <P> void testEvaluateW(RoadPropertyType<P> property, P expectedForward, P expectedBackward, Tag... wayTags) {
Index: applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/util/TagConditionLogicTest.java
===================================================================
--- applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/util/TagConditionLogicTest.java	(revision 32326)
+++ applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/util/TagConditionLogicTest.java	(revision 32620)
@@ -1,2 +1,3 @@
+// License: GPL. For details, see LICENSE file.
 package org.openstreetmap.josm.plugins.graphview.core.util;
 import static org.junit.Assert.assertFalse;
Index: applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/util/ValueStringParserTest.java
===================================================================
--- applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/util/ValueStringParserTest.java	(revision 32326)
+++ applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/util/ValueStringParserTest.java	(revision 32620)
@@ -1,2 +1,3 @@
+// License: GPL. For details, see LICENSE file.
 package org.openstreetmap.josm.plugins.graphview.core.util;
 
@@ -88,5 +89,5 @@
     }
 
-    private static final void assertClose(float expected, float actual) {
+    private static void assertClose(float expected, float actual) {
         if (Math.abs(expected - actual) > 0.001) {
             throw new AssertionError("expected " + expected + ", was " + actual);
Index: applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/visualisation/FloatPropertyColorSchemeTest.java
===================================================================
--- applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/visualisation/FloatPropertyColorSchemeTest.java	(revision 32326)
+++ applications/editors/josm/plugins/graphview/test/unit/org/openstreetmap/josm/plugins/graphview/core/visualisation/FloatPropertyColorSchemeTest.java	(revision 32620)
@@ -1,2 +1,3 @@
+// License: GPL. For details, see LICENSE file.
 package org.openstreetmap.josm.plugins.graphview.core.visualisation;