Implement Method#getDefaultValue()

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

classpath/avian/Classes.java

@@ -450,6 +450,25 @@ public class Classes {
     return (Annotation) a[0];
   }
 
+  public static Object getAnnotationDefaultValue(ClassLoader loader,
+                                                 MethodAddendum addendum) {
+    if (addendum == null) {
+      return null;
+    }
+    byte[] annotationDefault = (byte[]) addendum.annotationDefault;
+    if (annotationDefault == null) {
+      return null;
+    }
+    try {
+      return parseAnnotationValue(loader, addendum.pool,
+        new ByteArrayInputStream(annotationDefault));
+    } catch (IOException e) {
+      AssertionError error = new AssertionError();
+      error.initCause(e);
+      throw error;
+    }
+  }
+
   public static native Method makeMethod(Class c, int slot);
 
   private static native void acquireClassLock();

classpath/java/lang/reflect/Method.java

@@ -142,4 +142,9 @@ public class Method<T> extends AccessibleObject implements Member {
   public boolean isVarArgs() {
     return (getModifiers() & 0x80) != 0;
   }
+
+  public Object getDefaultValue() {
+    ClassLoader loader = getDeclaringClass().getClassLoader();
+    return Classes.getAnnotationDefaultValue(loader, vmMethod.addendum);
+  }
 }