Instantiates CensusContextFactoryImpl with Class.getConstructor().newInstance().

Author: sebright2

core/java/com/google/census/Provider.java

@@ -13,6 +13,8 @@
 
 package com.google.census;
 
+import java.lang.reflect.InvocationTargetException;
+
 /**
  * Census-specific service provider mechanism.
  *
@@ -40,14 +42,20 @@ class Provider<T> {
   T newInstance() {
     try {
       if (provider != null) {
-        return (T) provider.newInstance();
+        return (T) provider.getConstructor().newInstance();
       }
     } catch (InstantiationException e) {
       // TODO(dpo): decide what to do here - log, crash, or both.
       System.err.println(e);
     } catch (IllegalAccessException e) {
       // TODO(dpo): decide what to do here - log, crash, or both.
       System.err.println(e);
+    } catch (NoSuchMethodException e) {
+      // TODO(dpo): decide what to do here - log, crash, or both.
+      System.err.println(e);
+    } catch (InvocationTargetException e) {
+      // TODO(dpo): decide what to do here - log, crash, or both.
+      System.err.println(e);
     }
     return null;
   }

core_native/java/com/google/census/CensusContextFactoryImpl.java

@@ -21,6 +21,8 @@
 final class CensusContextFactoryImpl extends CensusContextFactory {
   static final CensusContextImpl DEFAULT = new CensusContextImpl(new HashMap<String, String>(0));
 
+  public CensusContextFactoryImpl() {}
+
   /**
    * Deserializes a {@link CensusContextImpl} from a serialized {@code CensusContextProto}.
    *