diff --git a/.idea/misc.xml b/.idea/misc.xml
index 938905647..6f34b5b64 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -46,7 +46,7 @@
       </profile-state>
     </entry>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="false" project-jdk-name="11" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/.idea/runConfigurations/Openrocket_UI_Jar.xml b/.idea/runConfigurations/Openrocket_UI_Jar.xml
index f5e1da03e..633c05286 100644
--- a/.idea/runConfigurations/Openrocket_UI_Jar.xml
+++ b/.idea/runConfigurations/Openrocket_UI_Jar.xml
@@ -1,10 +1,9 @@
 <component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="Openrocket UI Jar" type="JarApplication" factoryName="JAR Application">
-    <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
+  <configuration default="false" name="Openrocket UI Jar" type="JarApplication">
     <option name="JAR_PATH" value="build/jar/OpenRocket.jar" />
-    <option name="ALTERNATIVE_JRE_PATH" />
-    <envs />
-    <method>
+    <option name="ALTERNATIVE_JRE_PATH_ENABLED" value="true" />
+    <option name="ALTERNATIVE_JRE_PATH" value="11" />
+    <method v="2">
       <option name="BuildArtifacts" enabled="true">
         <artifact name="openrocket:jar" />
       </option>
diff --git a/core/src/net/sf/openrocket/rocketcomponent/InstanceMap.java b/core/src/net/sf/openrocket/rocketcomponent/InstanceMap.java
index 8e249f30d..36cc79e8a 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/InstanceMap.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/InstanceMap.java
@@ -9,16 +9,16 @@ import net.sf.openrocket.util.Transformation;
 
 
 /**
- * 
- * @author teyrana (aka Daniel Williams) <equipoise@gmail.com> 
+ *
+ * @author teyrana (aka Daniel Williams) <equipoise@gmail.com>
  *
  */
 public class InstanceMap extends HashMap<RocketComponent, ArrayList<InstanceContext>> {
-	
+
 	// =========== Public Functions ========================
-	
+
 	// public InstanceMap() {}
-	
+
 	public int count(final RocketComponent key) {
 		if(containsKey(key)){
 			return get(key).size();
@@ -26,12 +26,12 @@ public class InstanceMap extends HashMap<RocketComponent, ArrayList<InstanceCont
 			return 0;
 		}
 	}
-	
+
 	public void emplace(final RocketComponent component, boolean active, int number, final Transformation xform) {
 		final RocketComponent key = component;
-		
+
 		if(!containsKey(component)) {
-			put(key, new ArrayList<>());
+			put(key, new ArrayList<InstanceContext>());
 		}
 
 		final InstanceContext context = new InstanceContext(component, active, number, xform);
@@ -41,7 +41,7 @@ public class InstanceMap extends HashMap<RocketComponent, ArrayList<InstanceCont
 	public List<InstanceContext> getInstanceContexts(final RocketComponent key) {
 		return get(key);
 	}
-	
+
 	// this is primarily for debugging.
 	@Override
 	public String toString() {
@@ -53,21 +53,21 @@ public class InstanceMap extends HashMap<RocketComponent, ArrayList<InstanceCont
 			final ArrayList<InstanceContext> contexts = entry.getValue();
 			buffer.append(String.format("....[% 2d]:[%s]\n", outerIndex, key.getName()));
 			outerIndex++;
-			
+
 			int innerIndex = 0;
 			for(InstanceContext ctxt: contexts ) {
 				buffer.append(String.format("........[@% 2d][% 2d]  %s\n", innerIndex, ctxt.instanceNumber, ctxt.getLocation().toPreciseString()));
 				innerIndex++;
 			}
 		}
-		
+
 		return buffer.toString();
 	}
-	
+
 	// =========== Instance Member Variables ========================
-	
+
 	// =========== Private Instance Functions ========================
 
-	
+
 }
 
diff --git a/core/test/net/sf/openrocket/rocketcomponent/FlightConfigurationTest.java b/core/test/net/sf/openrocket/rocketcomponent/FlightConfigurationTest.java
index 6b5e38d70..46cbd903b 100644
--- a/core/test/net/sf/openrocket/rocketcomponent/FlightConfigurationTest.java
+++ b/core/test/net/sf/openrocket/rocketcomponent/FlightConfigurationTest.java
@@ -17,8 +17,8 @@ import net.sf.openrocket.util.TestRockets;
 import net.sf.openrocket.util.BaseTestCase.BaseTestCase;
 
 public class FlightConfigurationTest extends BaseTestCase {
-	private final static double EPSILON = MathUtil.EPSILON*1E3; 
-	
+	private final static double EPSILON = MathUtil.EPSILON*1E3;
+
 	/**
 	 * Empty rocket (no components) specific configuration tests
 	 */
@@ -26,12 +26,12 @@ public class FlightConfigurationTest extends BaseTestCase {
 	public void testEmptyRocket() {
 		Rocket r1 = TestRockets.makeEstesAlphaIII();
 		FlightConfiguration config = r1.getSelectedConfiguration();
-		
+
 		FlightConfiguration configClone = config.clone();
-		
+
 		assertTrue(config.getRocket() == configClone.getRocket());
 	}
-	
+
 
 	@Test
 	public void testFlightConfigurationRocketLength() {
@@ -55,13 +55,13 @@ public class FlightConfigurationTest extends BaseTestCase {
 		double actualReferenceArea = config.getReferenceArea();
 		assertEquals("source config reference area doesn't match: ", expectedReferenceArea, actualReferenceArea, EPSILON);
 	}
-	
+
 
 	@Test
 	public void testCloneBasic() {
 		Rocket rkt1 = TestRockets.makeBeta();
 		FlightConfiguration config1 = rkt1.getSelectedConfiguration();
-		
+
 		// preconditions
 		config1.setAllStages();
 		int expectedStageCount = 2;
@@ -79,10 +79,10 @@ public class FlightConfigurationTest extends BaseTestCase {
 		assertEquals("source config reference area doesn't match: ", expectedReferenceArea, actualReferenceArea, EPSILON);
 
 
-		// vvvv test target vvvv 
+		// vvvv test target vvvv
 		FlightConfiguration config2= config1.clone();
 		// ^^^^ test target ^^^^
-		
+
 		// postconditions
 		expectedStageCount = 2;
 		actualStageCount = config2.getActiveStageCount();
@@ -95,7 +95,7 @@ public class FlightConfigurationTest extends BaseTestCase {
 		assertEquals("source config reference area doesn't match: ", expectedReferenceArea, config2.getReferenceArea(), EPSILON);
 
 	}
-	
+
 	/**
 	 * Test flight configuration ID methods
 	 */
@@ -107,11 +107,11 @@ public class FlightConfigurationTest extends BaseTestCase {
 		int actualStageCount;
 		int expectedMotorCount;
 		int actualMotorCount;
-		
+
 		// test that cloned configurations operate independently:
 		// change #1, test clone #2 -- verify that cloned configurations change independent.
 		config1.setAllStages();
-		// vvvv test target vvvv 
+		// vvvv test target vvvv
 		FlightConfiguration config2 = config1.clone();
 		// ^^^^ test target ^^^^
 		config1.clearAllStages();
@@ -123,7 +123,7 @@ public class FlightConfigurationTest extends BaseTestCase {
 		expectedMotorCount = 0;
 		actualMotorCount = config1.getActiveMotors().size();
 		assertThat("active motor count doesn't match", actualMotorCount, equalTo(expectedMotorCount));
-		
+
 		// postcondition: config #2
 		expectedStageCount = 2;
 		actualStageCount = config2.getActiveStageCount();
@@ -132,7 +132,7 @@ public class FlightConfigurationTest extends BaseTestCase {
 		actualMotorCount = config2.getActiveMotors().size();
 		assertThat("active motor count doesn't match", actualMotorCount, equalTo(expectedMotorCount));
 	}
-	
+
 	/**
 	 * Single stage rocket specific configuration tests
 	 */
@@ -140,39 +140,39 @@ public class FlightConfigurationTest extends BaseTestCase {
 	public void testSingleStageRocket() {
 		Rocket r1 = TestRockets.makeEstesAlphaIII();
 		FlightConfiguration config = r1.getSelectedConfiguration();
-		
+
 		// test explicitly setting only first stage active
 		config.clearAllStages();
 		config.setOnlyStage(0);
-		
+
 		// test that getStageCount() returns correct value
 		int expectedStageCount = 1;
 		int stageCount = config.getStageCount();
 		assertTrue("stage count doesn't match", stageCount == expectedStageCount);
-		
+
 		expectedStageCount = 1;
 		stageCount = config.getActiveStageCount();
 		assertThat("active stage count doesn't match", stageCount, equalTo(expectedStageCount));
-		
+
 		// test explicitly setting all stages up to first stage active
 		config.setOnlyStage(0);
-		
+
 		// test explicitly setting all stages active
 		config.setAllStages();
 	}
-	
+
 	/**
 	 * Single stage rocket specific configuration tests
 	 */
 	@Test
 	public void testDefaultConfigurationIsEmpty() {
 		Rocket r1 = TestRockets.makeEstesAlphaIII();
-				
-		// don't change the configuration: 
+
+		// don't change the configuration:
 		FlightConfiguration defaultConfig = r1.getSelectedConfiguration();
-	
+
 		assertThat( "Empty configuration has motors! it should be empty!", r1.getEmptyConfiguration().getActiveMotors().size(), equalTo(0));
-		assertThat( "Default configuration is not the empty configuration. It should be!", defaultConfig.getActiveMotors().size(), equalTo(0)); 
+		assertThat( "Default configuration is not the empty configuration. It should be!", defaultConfig.getActiveMotors().size(), equalTo(0));
 	}
 
     @Test
@@ -197,15 +197,15 @@ public class FlightConfigurationTest extends BaseTestCase {
 	public void testMotorConfigurations() {
 		/* Setup */
 		Rocket rkt = TestRockets.makeEstesAlphaIII();
-		
+
 		InnerTube smmt = (InnerTube)rkt.getChild(0).getChild(1).getChild(2);
-		
+
 		int expectedMotorCount = 5;
 		int actualMotorCount = smmt.getMotorCount();
 		assertThat("number of motor configurations doesn't match.", actualMotorCount, equalTo(expectedMotorCount));
 
     }
-    
+
     @Test
     public void testFlightConfigurationGetters(){
 		Rocket rkt = TestRockets.makeEstesAlphaIII();
@@ -224,7 +224,7 @@ public class FlightConfigurationTest extends BaseTestCase {
         rkt.getFlightConfigurationByIndex(4);
         rkt.getFlightConfigurationByIndex(5, true);
     }
-    
+
 
     @Test(expected=java.lang.IndexOutOfBoundsException.class)
     public void testGetFlightConfigurationOutOfBounds(){
@@ -235,84 +235,84 @@ public class FlightConfigurationTest extends BaseTestCase {
 		int actualConfigCount = rkt.getConfigurationCount();
 		assertThat("number of loaded configuration counts doesn't actually match.", actualConfigCount, equalTo(expectedConfigCount));
 
-		// this SHOULD throw an exception -- 
+		// this SHOULD throw an exception --
 		//      it's out of bounds on, and no configuration exists at index 5.
-    	rkt.getFlightConfigurationByIndex(5);  
+    	rkt.getFlightConfigurationByIndex(5);
     }
-	
+
 	/**
 	 * Multi stage rocket specific configuration tests
 	 */
 	@Test
 	public void testMultiStageRocket() {
-		
+
 		/* Setup */
 		Rocket rkt = TestRockets.makeBeta();
 		FlightConfiguration config = rkt.getSelectedConfiguration();
-		
+
 		int expectedStageCount;
 		int stageCount;
-		
+
 		expectedStageCount = 2;
 		stageCount = config.getStageCount();
 		assertThat("stage count doesn't match", stageCount, equalTo(expectedStageCount));
-		
+
 		config.clearAllStages();
 		assertThat(" clear all stages: check #0: ", config.isStageActive(0), equalTo(false));
 		assertThat(" clear all stages: check #1: ", config.isStageActive(1), equalTo(false));
-		
+
 		// test explicitly setting only first stage active
 		config.setOnlyStage(0);
-		
+
 		expectedStageCount = 1;
 		stageCount = config.getActiveStageCount();
 		assertThat("active stage count doesn't match", stageCount, equalTo(expectedStageCount));
-		
+
 		assertThat(" setting single stage active: ", config.isStageActive(0), equalTo(true));
-		
+
 		// test explicitly setting all stages up to second stage active
 		config.setOnlyStage(1);
 		assertThat("Setting single stage active: ", config.isStageActive(0), equalTo(false));
 		assertThat("Setting single stage active: ", config.isStageActive(1), equalTo(true));
-		
+
 		config.clearStage(0);
 		assertThat(" deactivate stage #0: ", config.isStageActive(0), equalTo(false));
 		assertThat("     active stage #1: ", config.isStageActive(1), equalTo(true));
-		
+
 		// test explicitly setting all two stages active
 		config.setAllStages();
 		assertThat(" activate all stages: check stage #0: ", config.isStageActive(0), equalTo(true));
 		assertThat(" activate all stages: check stage #1: ", config.isStageActive(1), equalTo(true));
-		
+
 		// test toggling single stage
 		config.setAllStages();
 		config.toggleStage(0);
 		assertThat(" toggle stage #0: ", config.isStageActive(0), equalTo(false));
-		
+
 		config.toggleStage(0);
 		assertThat(" toggle stage #0: ", config.isStageActive(0), equalTo(true));
-		
+
 		config.toggleStage(0);
 		assertThat(" toggle stage #0: ", config.isStageActive(0), equalTo(false));
-		
+
 	}
-	
+
 	/**
 	 * Multi stage rocket specific configuration tests
 	 */
 	@Test
 	public void testMotorClusters() {
-		
+
 		/* Setup */
 		Rocket rkt = TestRockets.makeBeta();
 		FlightConfiguration config = rkt.getSelectedConfiguration();
-		
-		
+
+
 		config.clearAllStages();
 		int expectedMotorCount = 0;
 		int actualMotorCount = config.getActiveMotors().size();
 		assertThat("active motor count doesn't match", actualMotorCount, equalTo(expectedMotorCount));
-		
+
 		config.setOnlyStage(0);
 		expectedMotorCount = 1;
 		actualMotorCount = config.getActiveMotors().size();
@@ -328,7 +328,7 @@ public class FlightConfigurationTest extends BaseTestCase {
 		actualMotorCount = config.getActiveMotors().size();
 		assertThat("active motor count doesn't match: ", actualMotorCount, equalTo(expectedMotorCount));
 	}
-	
+
 	@Test
 	public void testIterateComponents() {
 		Rocket rocket = TestRockets.makeFalcon9Heavy();
@@ -336,21 +336,21 @@ public class FlightConfigurationTest extends BaseTestCase {
 
 		selected.clearAllStages();
 		selected.toggleStage(2);
-		
+
 		// vvvv Test Target vvvv
 		InstanceMap instances = selected.getActiveInstances();
 		// ^^^^ Test Target ^^^^
-		
+
 		// Payload Stage
 		final AxialStage coreStage = (AxialStage)rocket.getChild(1);
 		{ // Core Stage
 			final List<InstanceContext> coreStageContextList = instances.getInstanceContexts(coreStage);
 			final InstanceContext coreStageContext = coreStageContextList.get(0);
-			assertThat(coreStageContext.component.getClass(), equalTo(AxialStage.class));
+			assertThat((Class<AxialStage>) coreStageContext.component.getClass(), equalTo(AxialStage.class));
 			assertThat(coreStageContext.component.getID(), equalTo(rocket.getChild(1).getID()));
 			assertThat(coreStageContext.component.getInstanceCount(), equalTo(1));
-	
-			final Coordinate coreLocation = coreStageContext.getLocation(); 
+
+			final Coordinate coreLocation = coreStageContext.getLocation();
 			assertEquals(coreLocation.x, 0.564, EPSILON);
 			assertEquals(coreLocation.y, 0.0, EPSILON);
 			assertEquals(coreLocation.z, 0.0, EPSILON);
@@ -363,77 +363,77 @@ public class FlightConfigurationTest extends BaseTestCase {
 			final ParallelStage boosterStage = (ParallelStage)coreStage.getChild(0).getChild(0);
 			final List<InstanceContext> boosterStageContextList = instances.getInstanceContexts(boosterStage);
 			final InstanceContext boosterStage0Context = boosterStageContextList.get(0);
-			assertThat(boosterStage0Context.component.getClass(), equalTo(ParallelStage.class));
+			assertThat((Class<ParallelStage>) boosterStage0Context.component.getClass(), equalTo(ParallelStage.class));
 			assertThat(boosterStage0Context.component.getID(), equalTo(boosterStage.getID()));
 			assertThat(boosterStage0Context.instanceNumber, equalTo(0));
 			{
-				final Coordinate loc = boosterStage0Context.getLocation(); 
+				final Coordinate loc = boosterStage0Context.getLocation();
 				assertEquals(loc.x, 0.484, EPSILON);
 				assertEquals(loc.y, 0.077, EPSILON);
 				assertEquals(loc.z, 0.0, EPSILON);
 			}
-			
+
 			final InstanceContext boosterStage1Context = boosterStageContextList.get(1);
-			assertThat(boosterStage1Context.component.getClass(), equalTo(ParallelStage.class));
+			assertThat((Class<ParallelStage>) boosterStage1Context.component.getClass(), equalTo(ParallelStage.class));
 			assertThat(boosterStage1Context.component.getID(), equalTo(boosterStage.getID()));
 			assertThat(boosterStage1Context.instanceNumber, equalTo(1));
 			{
-				final Coordinate loc = boosterStage1Context.getLocation(); 
+				final Coordinate loc = boosterStage1Context.getLocation();
 				assertEquals(loc.x, 0.484, EPSILON);
 				assertEquals(loc.y, -0.077, EPSILON);
 				assertEquals(loc.z, 0.0, EPSILON);
 			}
-			
+
 			{ // Booster Body:
 				final BodyTube boosterBody = (BodyTube)boosterStage.getChild(1);
 				final List<InstanceContext> boosterBodyContextList = instances.getInstanceContexts(boosterBody);
-				
+
 				// this is the instance number rocket-wide
 				final InstanceContext boosterBodyContext = boosterBodyContextList.get(1);
-				
+
 				// this is the instance number per-parent
 				assertThat(boosterBodyContext.instanceNumber, equalTo(0));
-				
-				assertThat(boosterBodyContext.component.getClass(), equalTo(BodyTube.class));
-				
-				final Coordinate bodyTubeLocation = boosterBodyContext.getLocation(); 
+
+				assertThat((Class<BodyTube>) boosterBodyContext.component.getClass(), equalTo(BodyTube.class));
+
+				final Coordinate bodyTubeLocation = boosterBodyContext.getLocation();
 				assertEquals(bodyTubeLocation.x, 0.564, EPSILON);
 				assertEquals(bodyTubeLocation.y, -0.077, EPSILON);
 				assertEquals(bodyTubeLocation.z, 0.0, EPSILON);
-								
+
 				{ // Booster::Motor Tubes ( x2 x4)
 					final InnerTube boosterMMT = (InnerTube)boosterBody.getChild(0);
 					final List<InstanceContext> mmtContextList = instances.getInstanceContexts(boosterMMT);
 					assertEquals(8, mmtContextList.size());
-					
+
 					final InstanceContext motorTubeContext0 = mmtContextList.get(4);
-					assertThat(motorTubeContext0.component.getClass(), equalTo(InnerTube.class));
+					assertThat((Class<InnerTube>) motorTubeContext0.component.getClass(), equalTo(InnerTube.class));
 					assertThat(motorTubeContext0.instanceNumber, equalTo(0));
-					final Coordinate motorTube0Location = motorTubeContext0.getLocation(); 
+					final Coordinate motorTube0Location = motorTubeContext0.getLocation();
 					assertEquals(motorTube0Location.x, 1.214, EPSILON);
 					assertEquals(motorTube0Location.y, -0.062, EPSILON);
 					assertEquals(motorTube0Location.z, -0.015, EPSILON);
 
 					final InstanceContext motorTubeContext1 = mmtContextList.get(5);
-					assertThat(motorTubeContext1.component.getClass(), equalTo(InnerTube.class));
+					assertThat((Class<InnerTube>) motorTubeContext1.component.getClass(), equalTo(InnerTube.class));
 					assertThat(motorTubeContext1.instanceNumber, equalTo(1));
-					final Coordinate motorTube1Location = motorTubeContext1.getLocation(); 
+					final Coordinate motorTube1Location = motorTubeContext1.getLocation();
 					assertEquals(motorTube1Location.x, 1.214, EPSILON);
 					assertEquals(motorTube1Location.y, -0.092, EPSILON);
 					assertEquals(motorTube1Location.z, -0.015, EPSILON);
 
 					final InstanceContext motorTubeContext2 = mmtContextList.get(6);
-					assertThat(motorTubeContext2.component.getClass(), equalTo(InnerTube.class));
+					assertThat((Class<InnerTube>) motorTubeContext2.component.getClass(), equalTo(InnerTube.class));
 					assertThat(motorTubeContext2.instanceNumber, equalTo(2));
-					final Coordinate motorTube2Location = motorTubeContext2.getLocation(); 
+					final Coordinate motorTube2Location = motorTubeContext2.getLocation();
 					assertEquals(motorTube2Location.x, 1.214, EPSILON);
 					assertEquals(motorTube2Location.y, -0.092, EPSILON);
 					assertEquals(motorTube2Location.z, 0.015, EPSILON);
 
 					final InstanceContext motorTubeContext3 = mmtContextList.get(7);
-					assertThat(motorTubeContext3.component.getClass(), equalTo(InnerTube.class));
+					assertThat((Class<InnerTube>) motorTubeContext3.component.getClass(), equalTo(InnerTube.class));
 					assertThat(motorTubeContext3.instanceNumber, equalTo(3));
-					final Coordinate motorTube3Location = motorTubeContext3.getLocation(); 
+					final Coordinate motorTube3Location = motorTubeContext3.getLocation();
 					assertEquals(motorTube3Location.x, 1.214, EPSILON);
 					assertEquals(motorTube3Location.y, -0.062, EPSILON);
 					assertEquals(motorTube3Location.z, 0.015, EPSILON);
@@ -442,54 +442,54 @@ public class FlightConfigurationTest extends BaseTestCase {
 					final FinSet fins = (FinSet)boosterBody.getChild(1);
 					final List<InstanceContext> finContextList = instances.getInstanceContexts(fins);
 					assertEquals(6, finContextList.size());
-					
+
 					final InstanceContext boosterFinContext0 = finContextList.get(3);
-					assertThat(boosterFinContext0.component.getClass(), equalTo(TrapezoidFinSet.class));
+					assertThat((Class<TrapezoidFinSet>) boosterFinContext0.component.getClass(), equalTo(TrapezoidFinSet.class));
 					assertThat(boosterFinContext0.instanceNumber, equalTo(0));
-					final Coordinate boosterFin0Location = boosterFinContext0.getLocation(); 
+					final Coordinate boosterFin0Location = boosterFinContext0.getLocation();
 					assertEquals(boosterFin0Location.x,  1.044, EPSILON);
 					assertEquals(boosterFin0Location.y, -0.104223611, EPSILON);
 					assertEquals(boosterFin0Location.z, -0.027223611, EPSILON);
-					
+
 					final InstanceContext boosterFinContext1 = finContextList.get(4);
-					assertThat(boosterFinContext1.component.getClass(), equalTo(TrapezoidFinSet.class));
+					assertThat((Class<TrapezoidFinSet>) boosterFinContext1.component.getClass(), equalTo(TrapezoidFinSet.class));
 					assertThat(boosterFinContext1.instanceNumber, equalTo(1));
-					final Coordinate boosterFin1Location = boosterFinContext1.getLocation(); 
+					final Coordinate boosterFin1Location = boosterFinContext1.getLocation();
 					assertEquals(boosterFin1Location.x,  1.044, EPSILON);
 					assertEquals(boosterFin1Location.y, -0.03981186, EPSILON);
 					assertEquals(boosterFin1Location.z, -0.00996453, EPSILON);
-					
+
 					final InstanceContext boosterFinContext2 = finContextList.get(5);
-					assertThat(boosterFinContext2.component.getClass(), equalTo(TrapezoidFinSet.class));
+					assertThat((Class<TrapezoidFinSet>) boosterFinContext2.component.getClass(), equalTo(TrapezoidFinSet.class));
 					assertThat(boosterFinContext2.instanceNumber, equalTo(2));
-					final Coordinate boosterFin2Location = boosterFinContext2.getLocation(); 
+					final Coordinate boosterFin2Location = boosterFinContext2.getLocation();
 					assertEquals(boosterFin2Location.x,  1.044, EPSILON);
 					assertEquals(boosterFin2Location.y, -0.08696453, EPSILON);
 					assertEquals(boosterFin2Location.z,  0.03718814, EPSILON);
-					
+
 				}
 
 			}
-			
+
 		}
 	}
-	
+
 	@Test
 	public void testIterateCoreComponents_AllStagesActive() {
 		Rocket rocket = TestRockets.makeFalcon9Heavy();
 		FlightConfiguration selected = rocket.getSelectedConfiguration();
 
 		selected.setAllStages();
-		
+
 		// vvvv Test Target vvvv
 		ArrayList<RocketComponent> components = selected.getCoreComponents();
 		// ^^^^ Test Target ^^^^
-		
+
 		assertThat(components.size(), equalTo(10));
-		
+
 		final AxialStage payloadStage = (AxialStage)components.get(0);
 		assertThat(payloadStage.getName(), equalTo("Payload Fairing Stage"));
-		
+
 		final AxialStage coreStage = (AxialStage)components.get(1);
 		assertThat(coreStage.getName(), equalTo("Core Stage"));
 
@@ -499,7 +499,7 @@ public class FlightConfigurationTest extends BaseTestCase {
 		assertThat(components.get(3).getName(), equalTo("PL Fairing Body"));
 
 		assertThat(components.get(4), instanceOf(Transition.class));
-		
+
 		assertThat(components.get(5), instanceOf(BodyTube.class));
 		assertThat(components.get(5).getName(), equalTo("Upper Stage Body"));
 
@@ -508,11 +508,11 @@ public class FlightConfigurationTest extends BaseTestCase {
 
 		assertThat(components.get(7), instanceOf(BodyTube.class));
 		assertThat(components.get(7).getName(), equalTo("Core Stage Body"));
-		
+
 		assertThat(components.get(8), instanceOf(Parachute.class));
 		assertThat(components.get(9), instanceOf(ShockCord.class));
 	}
-	
+
 	@Test
 	public void testIterateCoreComponents_ActiveOnly() {
 		Rocket rocket = TestRockets.makeFalcon9Heavy();
@@ -520,30 +520,30 @@ public class FlightConfigurationTest extends BaseTestCase {
 
 		selected.clearAllStages();
 		selected.toggleStage(2);  // booster only.
-		
+
 		// vvvv Test Target vvvv
 		ArrayList<RocketComponent> components = selected.getCoreComponents();
 		// ^^^^ Test Target ^^^^
-		
+
 		assertThat(components.size(), equalTo(0));
-		
-		
+
+
 		// =================================
 		selected.clearAllStages();
 		selected.toggleStage(1);  // booster only.
-		
+
 		// vvvv Test Target vvvv
 		components = selected.getCoreComponents();
 		// ^^^^ Test Target ^^^^
-		
+
 		assertThat(components.size(), equalTo(2));
-				
+
 		final AxialStage coreStage = (AxialStage)components.get(0);
 		assertThat(coreStage.getName(), equalTo("Core Stage"));
-		
+
 		assertThat(components.get(1), instanceOf(BodyTube.class));
 		assertThat(components.get(1).getName(), equalTo("Core Stage Body"));
-		
+
 	}
 }