diff --git a/classpath/java/lang/Class.java b/classpath/java/lang/Class.java
index f100438489..0ae4019b0c 100644
--- a/classpath/java/lang/Class.java
+++ b/classpath/java/lang/Class.java
@@ -25,6 +25,10 @@ public final class Class <T> {
 
   private Class() { }
 
+  public String toString() {
+    return getName();
+  }
+
   public String getName() {
     return new String(name, 0, name.length - 1, false);
   }
@@ -73,7 +77,7 @@ public final class Class <T> {
 
   public Class getComponentType() {
     if (isArray()) {
-      return forCanonicalName(new String(name, 1, name.length - 2, false));
+      return (Class) (Object) staticTable;
     } else {
       return null;
     }
@@ -258,12 +262,14 @@ public final class Class <T> {
 
   private int countMethods(boolean publicOnly) {
     int count = 0;
-    for (int i = 0; i < methodTable.length; ++i) {
-      if (((! publicOnly)
-           || ((methodTable[i].getModifiers() & Modifier.PUBLIC)) != 0)
-          && (! methodTable[i].getName().startsWith("<")))
-      {
-        ++ count;
+    if (methodTable != null) {
+      for (int i = 0; i < methodTable.length; ++i) {
+        if (((! publicOnly)
+             || ((methodTable[i].getModifiers() & Modifier.PUBLIC)) != 0)
+            && (! methodTable[i].getName().startsWith("<")))
+        {
+          ++ count;
+        }
       }
     }
     return count;
diff --git a/classpath/java/lang/Double.java b/classpath/java/lang/Double.java
index caffeb5177..99d9b2640f 100644
--- a/classpath/java/lang/Double.java
+++ b/classpath/java/lang/Double.java
@@ -31,7 +31,7 @@ public final class Double extends Number {
   }
 
   public static String toString(double v) {
-    return "todo";
+    return "Double.toString: todo";
   }
 
   public byte byteValue() {
@@ -60,7 +60,7 @@ public final class Double extends Number {
 
   public static double parseDouble(String s) {
     // todo
-    return 0.0;
+    throw new NumberFormatException(s);
   }
 
   public static native long doubleToRawLongBits(double value);
diff --git a/classpath/java/lang/Float.java b/classpath/java/lang/Float.java
index c06bdc9dc9..1c0779de09 100644
--- a/classpath/java/lang/Float.java
+++ b/classpath/java/lang/Float.java
@@ -26,7 +26,7 @@ public final class Float extends Number {
   }
 
   public static String toString(float v) {
-    return "todo";
+    return "Float.toString: todo";
   }
 
   public byte byteValue() {
diff --git a/classpath/java/lang/Long.java b/classpath/java/lang/Long.java
index b289726e1e..feb8c417ee 100644
--- a/classpath/java/lang/Long.java
+++ b/classpath/java/lang/Long.java
@@ -34,7 +34,10 @@ public final class Long extends Number {
       return "0";
     }
 
-    int size = (v < 0 ? 1 : 0);
+    boolean negative = v < 0;
+    if (negative) v = -v;
+
+    int size = (negative ? 1 : 0);
     for (long n = v; n > 0; n /= radix) ++size;
 
     char[] array = new char[size];
@@ -50,7 +53,7 @@ public final class Long extends Number {
       --i;
     }
 
-    if (v < 0) {
+    if (negative) {
       array[i] = '-';
     }
 
diff --git a/classpath/java/lang/String.java b/classpath/java/lang/String.java
index df3f1bf3d1..5a8e0962c2 100644
--- a/classpath/java/lang/String.java
+++ b/classpath/java/lang/String.java
@@ -122,7 +122,7 @@ public final class String implements Comparable<String> {
   }
 
   public int indexOf(int c) {
-    for (int i = 0; i < length - 1; ++i) {
+    for (int i = 0; i < length; ++i) {
       if (charAt(i) == c) {
         return i;
       }
@@ -144,7 +144,7 @@ public final class String implements Comparable<String> {
   public int indexOf(String s) {
     if (s.length == 0) return 0;
 
-    for (int i = 0; i < length - s.length; ++i) {
+    for (int i = 0; i < length - s.length + 1; ++i) {
       int j = 0;
       for (; j < s.length; ++j) {
         if (charAt(i + j) != s.charAt(j)) {
diff --git a/classpath/java/lang/Throwable.java b/classpath/java/lang/Throwable.java
index 01e28fd6e7..1c77a7566a 100644
--- a/classpath/java/lang/Throwable.java
+++ b/classpath/java/lang/Throwable.java
@@ -36,7 +36,12 @@ public class Throwable {
   }
 
   public String toString() {
-    return getClass().getName() + ": " + message;
+    StringBuilder sb = new StringBuilder();
+    sb.append(getClass().getName());
+    if (message != null) {
+      sb.append(": ").append(message);
+    }
+    return sb.toString();
   }
 
   private static native Object trace(int skipCount);
@@ -69,11 +74,7 @@ public class Throwable {
   }
 
   private void printStackTrace(StringBuilder sb, String nl) {
-    sb.append(getClass().getName());
-    if (message != null) {
-      sb.append(": ").append(message);
-    }
-    sb.append(nl);
+    sb.append(toString()).append(nl);
 
     StackTraceElement[] trace = resolveTrace();
     for (int i = 0; i < trace.length; ++i) {
diff --git a/classpath/java/lang/reflect/Array.java b/classpath/java/lang/reflect/Array.java
index eb4d9abc56..06d99e20d3 100644
--- a/classpath/java/lang/reflect/Array.java
+++ b/classpath/java/lang/reflect/Array.java
@@ -28,15 +28,13 @@ public final class Array {
       return Boolean.valueOf(((boolean[]) array)[index]);
     case 'L':
     case '[':
-      return getObject(array, index);
+      return ((Object[]) array)[index];
 
     default:
       throw new Error();
     }
   }
 
-  private static native Object getObject(Object array, int index);
-
   public static void set(Object array, int index, Object value) {
     String className = array.getClass().getName();
     if (! className.startsWith("[")) {
@@ -71,7 +69,7 @@ public final class Array {
     case 'L':
     case '[':
       if (array.getClass().getComponentType().isInstance(value)) {
-        setObject(array, index, value);
+        ((Object[]) array)[index] = value;
       } else {
         throw new IllegalArgumentException();
       }
@@ -82,8 +80,6 @@ public final class Array {
     }    
   }
 
-  private static native void setObject(Object array, int index, Object value);
-
   public static native int getLength(Object array);
 
   private static native Object makeObjectArray(Class elementType, int length);
diff --git a/classpath/java/lang/reflect/Method.java b/classpath/java/lang/reflect/Method.java
index d48e843872..606eb4d969 100644
--- a/classpath/java/lang/reflect/Method.java
+++ b/classpath/java/lang/reflect/Method.java
@@ -73,11 +73,11 @@ public class Method<T> extends AccessibleObject implements Member {
             types[index++] = Class.forName(name);
           } else {
             String name = spec.substring(start, i + 1);
-            types[index++] = Class.forName(name);
+            types[index++] = Class.forCanonicalName(name);
           }
         } else {
           String name = spec.substring(i, i + 1);
-          types[index++] = Class.forName(name);
+          types[index++] = Class.forCanonicalName(name);
         }
       }
     } catch (ClassNotFoundException e) {
diff --git a/makefile b/makefile
index 4752f635e1..3ad44f87ef 100644
--- a/makefile
+++ b/makefile
@@ -233,8 +233,8 @@ $(jni-library): $(jni-objects)
 $(executable): $(interpreter-objects) $(stdcpp-objects)
 	@echo "linking $(@)"
 	$(cc) $(lflags) $(^) -o $(@)
-	$(strip) --strip-all $(@)
-	$(show-size) $(@)
+	@$(strip) --strip-all $(@)
+	@$(show-size) $(@)
 
 .PHONY: generator
 generator: $(generator-executable)
diff --git a/src/builtin.cpp b/src/builtin.cpp
index f8adff3412..1f4cf5f0a6 100644
--- a/src/builtin.cpp
+++ b/src/builtin.cpp
@@ -260,7 +260,7 @@ Field_setObject(Thread* t, jclass, jobject instance, jint offset,
 jobject
 Constructor_make(Thread* t, jclass, jclass c)
 {
-  return pushReference(t, make(t, c));
+  return pushReference(t, make(t, *c));
 }
 
 jobject
@@ -281,18 +281,6 @@ Method_invoke(Thread* t, jclass, jobject method, jobject instance,
   return pushReference(t, v);
 }
 
-jobject
-Array_getObject(Thread* t, jclass, jobject array, int index)
-{
-  return pushReference(t, objectArrayBody(t, *array, index));
-}
-
-void
-Array_setObject(Thread* t, jclass, jobject array, int index, jobject value)
-{
-  set(t, objectArrayBody(t, *array, index), (value ? *value : 0));
-}
-
 jint
 Array_getLength(Thread* t, jclass, jobject array)
 {
@@ -663,10 +651,6 @@ populateBuiltinMap(Thread* t, object map)
     { "Java_java_lang_Object_clone",
       reinterpret_cast<void*>(::Object_clone) },
 
-    { "Java_java_lang_reflect_Array_getObject",
-      reinterpret_cast<void*>(::Array_getObject) },
-    { "Java_java_lang_reflect_Array_setObject",
-      reinterpret_cast<void*>(::Array_setObject) },
     { "Java_java_lang_reflect_Array_getLength",
       reinterpret_cast<void*>(::Array_getLength) },
     { "Java_java_lang_reflect_Array_makeObjectArray",
diff --git a/src/machine.cpp b/src/machine.cpp
index 3f5b1b5b03..8ed1ef56f6 100644
--- a/src/machine.cpp
+++ b/src/machine.cpp
@@ -1172,6 +1172,7 @@ object
 makeArrayClass(Thread* t, unsigned dimensions, object spec,
                object elementClass)
 {
+  // todo: arrays should implement Cloneable and Serializable
   return makeClass
     (t,
      0,
@@ -1182,11 +1183,11 @@ makeArrayClass(Thread* t, unsigned dimensions, object spec,
      classObjectMask(t, arrayBody(t, t->vm->types, Machine::ArrayType)),
      spec,
      arrayBody(t, t->vm->types, Machine::JobjectType),
-     elementClass,
+     0,
      classVirtualTable(t, arrayBody(t, t->vm->types, Machine::JobjectType)),
      0,
      0,
-     0,
+     elementClass,
      t->vm->loader);
 }
 
@@ -1688,6 +1689,8 @@ stringChars(Thread* t, object string, char* chars)
 bool
 isAssignableFrom(Thread* t, object a, object b)
 {
+  if (a == b) return true;
+
   if (classFlags(t, a) & ACC_INTERFACE) {
     for (; b; b = classSuper(t, b)) {
       object itable = classInterfaceTable(t, b);
@@ -1697,6 +1700,11 @@ isAssignableFrom(Thread* t, object a, object b)
         }
       }
     }
+  } else if (classArrayDimensions(t, a)) {
+    if (classArrayDimensions(t, b)) {
+      return isAssignableFrom
+        (t, classStaticTable(t, a), classStaticTable(t, b));
+    }
   } else {
     for (; b; b = classSuper(t, b)) {
       if (b == a) {