Turns out some 1.7-specific classes got in, this version of the project should be 1.6-compatible.

Author: Kiskae

README.md

@@ -1,4 +1,4 @@
-Java Source Metrics
+Java Source Metrics [![Build Status](https://travis-ci.org/Kiskae/Java-Source-Metrics.svg?branch=master)](https://travis-ci.org/Kiskae/Java-Source-Metrics)
 ===================
 
 An application to calculate metrics from java bytecode.

src/main/java/nl/rug/jbi/jsm/core/pipeline/Pipeline.java

@@ -238,7 +238,9 @@ private ProducerMetric loadProducer(final Class<? extends ProducerMetric> produc
                 );
             } catch (NoSuchMethodException e) {
                 throw new MetricPreparationException("Producers require a zero-argument constructor.");
-            } catch (ReflectiveOperationException e) {
+            } catch (InstantiationException e) {
+                throw new MetricPreparationException("Exception in producer creation through reflection", e);
+            } catch (IllegalAccessException e) {
                 throw new MetricPreparationException("Exception in producer creation through reflection", e);
             }
         }

src/main/java/nl/rug/jbi/jsm/frontend/GUIFrontend.java

@@ -49,10 +49,14 @@ public JSMCore getCore() {
     public void init() {
         try {
             UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
-        } catch (final ReflectiveOperationException e) {
-            logger.warn("Exception setting Swing L&F", e);
         } catch (final UnsupportedLookAndFeelException ignored) {
             /* Will just default to the cross-platform L&F */
+        } catch (ClassNotFoundException e) {
+            logger.warn("Exception setting Swing L&F", e);
+        } catch (InstantiationException e) {
+            logger.warn("Exception setting Swing L&F", e);
+        } catch (IllegalAccessException e) {
+            logger.warn("Exception setting Swing L&F", e);
         }
 
         SwingUtilities.invokeLater(new Runnable() {

src/main/java/nl/rug/jbi/jsm/frontend/ui/element/SelectableList.java

@@ -1,17 +1,20 @@
 package nl.rug.jbi.jsm.frontend.ui.element;
 
+import com.google.common.base.Function;
+import com.google.common.collect.FluentIterable;
+
 import javax.swing.*;
 import java.util.Collections;
 import java.util.List;
 
-public class SelectableList extends JList<String> {
-    private final DefaultListModel<String> items;
+public class SelectableList extends JList {
+    private final DefaultListModel items;
 
     public SelectableList() {
-        this(new DefaultListModel<String>());
+        this(new DefaultListModel());
     }
 
-    private SelectableList(final DefaultListModel<String> items) {
+    private SelectableList(final DefaultListModel items) {
         super(items);
         this.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
         this.setLayoutOrientation(JList.VERTICAL);
@@ -21,7 +24,14 @@ private SelectableList(final DefaultListModel<String> items) {
     }
 
     public List<String> getOptions() {
-        return Collections.list(this.items.elements());
+        return FluentIterable.from(Collections.list(this.items.elements()))
+                .transform(new Function<Object, String>() {
+                    @Override
+                    public String apply(Object o) {
+                        return o != null ? o.toString() : null;
+                    }
+                })
+                .toList();
     }
 
     public void addOption(final String item) {

src/main/java/nl/rug/jbi/jsm/metrics/packagemetrics/IIPED.java

@@ -64,7 +64,7 @@ public List<MetricResult> getResults(final Map<String, MetricState> states, fina
 
         for (final Map.Entry<String, MetricState> entry : states.entrySet()) {
             final String collectionName = entry.getValue().getValue("Collection");
-            final double result = entry.getValue().getValue("IIPED-p");
+            final double result = entry.getValue().<Number>getValue("IIPED-p").doubleValue();
 
             results.add(MetricResult.getResult(
                     entry.getKey(),

src/main/java/nl/rug/jbi/jsm/metrics/packagemetrics/IIPUD.java

@@ -64,7 +64,7 @@ public List<MetricResult> getResults(final Map<String, MetricState> states, fina
 
         for (final Map.Entry<String, MetricState> entry : states.entrySet()) {
             final String collectionName = entry.getValue().getValue("Collection");
-            final double result = entry.getValue().getValue("IIPUD-p");
+            final double result = entry.getValue().<Number>getValue("IIPUD-p").doubleValue();
 
             results.add(MetricResult.getResult(
                     entry.getKey(),

src/main/java/nl/rug/jbi/jsm/metrics/packagemetrics/IPSC.java

@@ -86,7 +86,7 @@ public List<MetricResult> getResults(final Map<String, MetricState> states, fina
 
         for (final Map.Entry<String, MetricState> entry : states.entrySet()) {
             final String collectionName = entry.getValue().getValue("Collection");
-            final double result = entry.getValue().getValue("IPSC-p");
+            final double result = entry.getValue().<Number>getValue("IPSC-p").doubleValue();
 
             results.add(MetricResult.getResult(
                     entry.getKey(),

src/main/java/nl/rug/jbi/jsm/metrics/packagemetrics/PF.java

@@ -76,7 +76,7 @@ public List<MetricResult> getResults(final Map<String, MetricState> states, fina
 
         for (final Map.Entry<String, MetricState> entry : states.entrySet()) {
             final String collectionName = entry.getValue().getValue("Collection");
-            final double result = entry.getValue().getValue("PF-p");
+            final double result = entry.getValue().<Number>getValue("PF-p").doubleValue();
 
             results.add(MetricResult.getResult(
                     entry.getKey(),

src/main/java/nl/rug/jbi/jsm/util/ResultsExporter.java

@@ -69,7 +69,7 @@ private static String printObject(final Object o, final NumberFormat nf) {
         if (o instanceof Number) {
             return nf.format(((Number) o).doubleValue());
         } else {
-            return java.util.Objects.toString(o);
+            return o != null ? o.toString() : "null";
         }
     }
 

src/test/java/nl/rug/jbi/jsm/metrics/ckjm/CBOTest.java

@@ -109,7 +109,7 @@ public void testRefFieldAccess() throws ExecutionException {
         //Referenced Types:
         //Accessed Type: [nl.rug.jbi.jsm.metrics.ckjm.cbo.RefTypes]
         //Field Type: [nl.rug.jbi.jsm.metrics.ckjm.cbo.RefTypes.Map]
-        //java.util.Objects access is ignored!
+        //java.lang.String access is ignored!
         assertEquals(2.0, result, 0.001);
     }
 
@@ -233,6 +233,7 @@ public void testRefAll() throws ExecutionException {
         //Implements: nl.rug.jbi.jsm.metrics.ckjm.cbo.RefTypes.FakeInterface
         //INSTANCEOF: nl.rug.jbi.jsm.metrics.ckjm.cbo.RefTypes.List
         //CAST: nl.rug.jbi.jsm.metrics.ckjm.cbo.RefTypes.FakeInterface
+        //java.lang.String access is ignored!
 
         //Basically all types created by nl.rug.jbi.jsm.metrics.ckjm.cbo.RefTypes
         assertEquals(5.0, result, 0.001);