diff --git a/src/com/esotericsoftware/reflectasm/FieldAccess.java b/src/com/esotericsoftware/reflectasm/FieldAccess.java
index 20c4ad0..05ecb95 100644
--- a/src/com/esotericsoftware/reflectasm/FieldAccess.java
+++ b/src/com/esotericsoftware/reflectasm/FieldAccess.java
@@ -31,6 +31,10 @@ public abstract class FieldAccess {
 			nextClass = nextClass.getSuperclass();
 		}
 
+		String[] fieldNames = new String[fields.size()];
+		for (int i = 0, n = fieldNames.length; i < n; i++)
+			fieldNames[i] = fields.get(i).getName();
+
 		String className = type.getName();
 		String accessClassName = className + "FieldAccess";
 		if (accessClassName.startsWith("java.")) accessClassName = "reflectasm." + accessClassName;
@@ -215,24 +219,22 @@ public abstract class FieldAccess {
 		}
 		try {
 			FieldAccess access = (FieldAccess)accessClass.newInstance();
-			access.fields = fields.toArray(new Field[fields.size()]);
+			access.fieldNames = fieldNames;
 			return access;
 		} catch (Exception ex) {
 			throw new RuntimeException("Error constructing field access class: " + accessClassName, ex);
 		}
 	}
 
-	private Field[] fields;
+	private String[] fieldNames;
 
 	abstract public void set (Object object, int fieldIndex, Object value);
 
 	abstract public Object get (Object object, int fieldIndex);
 
 	public int getIndex (String fieldName) {
-		for (int i = 0, n = fields.length; i < n; i++) {
-			Field field = fields[i];
-			if (field.getName().equals(fieldName)) return i;
-		}
+		for (int i = 0, n = fieldNames.length; i < n; i++)
+			if (fieldNames[i].equals(fieldName)) return i;
 		throw new IllegalArgumentException("Unable to find public field: " + fieldName);
 	}
 
@@ -244,7 +246,7 @@ public abstract class FieldAccess {
 		return get(object, getIndex(fieldName));
 	}
 
-	public Field[] getFields () {
-		return fields;
+	public String[] getFieldNames () {
+		return fieldNames;
 	}
 }
diff --git a/src/com/esotericsoftware/reflectasm/MethodAccess.java b/src/com/esotericsoftware/reflectasm/MethodAccess.java
index 97da146..ee77e74 100644
--- a/src/com/esotericsoftware/reflectasm/MethodAccess.java
+++ b/src/com/esotericsoftware/reflectasm/MethodAccess.java
@@ -32,6 +32,14 @@ public abstract class MethodAccess {
 			nextClass = nextClass.getSuperclass();
 		}
 
+		Class[][] parameterTypes = new Class[methods.size()][];
+		String[] methodNames = new String[methods.size()];
+		for (int i = 0, n = methodNames.length; i < n; i++) {
+			Method method = methods.get(i);
+			methodNames[i] = method.getName();
+			parameterTypes[i] = method.getParameterTypes();
+		}
+
 		String className = type.getName();
 		String accessClassName = className + "MethodAccess";
 		if (accessClassName.startsWith("java.")) accessClassName = "reflectasm." + accessClassName;
@@ -196,14 +204,16 @@ public abstract class MethodAccess {
 		}
 		try {
 			MethodAccess access = (MethodAccess)accessClass.newInstance();
-			access.methods = methods.toArray(new Method[methods.size()]);
+			access.methodNames = methodNames;
+			access.parameterTypes = parameterTypes;
 			return access;
 		} catch (Exception ex) {
 			throw new RuntimeException("Error constructing method access class: " + accessClassName, ex);
 		}
 	}
 
-	private Method[] methods;
+	private String[] methodNames;
+	private Class[][] parameterTypes;
 
 	abstract public Object invoke (Object object, int methodIndex, Object... args);
 
@@ -214,22 +224,22 @@ public abstract class MethodAccess {
 
 	/** Returns the index of the first method with the specified name. */
 	public int getIndex (String methodName) {
-		for (int i = 0, n = methods.length; i < n; i++) {
-			Method method = methods[i];
-			if (method.getName().equals(methodName)) return i;
-		}
+		for (int i = 0, n = methodNames.length; i < n; i++)
+			if (methodNames[i].equals(methodName)) return i;
 		throw new IllegalArgumentException("Unable to find public method: " + methodName);
 	}
 
-	public int getIndex (String methodName, Class... parameterTypes) {
-		for (int i = 0, n = methods.length; i < n; i++) {
-			Method method = methods[i];
-			if (method.getName().equals(methodName) && Arrays.equals(parameterTypes, method.getParameterTypes())) return i;
-		}
+	public int getIndex (String methodName, Class... paramTypes) {
+		for (int i = 0, n = methodNames.length; i < n; i++)
+			if (methodNames[i].equals(methodName) && Arrays.equals(paramTypes, parameterTypes[i])) return i;
 		throw new IllegalArgumentException("Unable to find public method: " + methodName + " " + Arrays.toString(parameterTypes));
 	}
 
-	public Method[] getMethods () {
-		return methods;
+	public String[] getMethodNames () {
+		return methodNames;
+	}
+
+	public Class[][] getParameterTypes () {
+		return parameterTypes;
 	}
 }
diff --git a/test/com/esotericsoftware/reflectasm/FieldAccessTest.java b/test/com/esotericsoftware/reflectasm/FieldAccessTest.java
index ed0ccdc..bb5ba94 100644
--- a/test/com/esotericsoftware/reflectasm/FieldAccessTest.java
+++ b/test/com/esotericsoftware/reflectasm/FieldAccessTest.java
@@ -43,25 +43,25 @@ public class FieldAccessTest extends TestCase {
 			access.getIndex("name");
 			fail();
 		} catch (IllegalArgumentException expected) {
-			expected.printStackTrace();
+			// expected.printStackTrace();
 		}
 		try {
 			access.get(new EmptyClass(), "meow");
 			fail();
 		} catch (IllegalArgumentException expected) {
-			expected.printStackTrace();
+			// expected.printStackTrace();
 		}
 		try {
 			access.get(new EmptyClass(), 0);
 			fail();
 		} catch (IllegalArgumentException expected) {
-			expected.printStackTrace();
+			// expected.printStackTrace();
 		}
 		try {
 			access.set(new EmptyClass(), "foo", "moo");
 			fail();
 		} catch (IllegalArgumentException expected) {
-			expected.printStackTrace();
+			// expected.printStackTrace();
 		}
 	}
 
diff --git a/test/com/esotericsoftware/reflectasm/MethodAccessTest.java b/test/com/esotericsoftware/reflectasm/MethodAccessTest.java
index 9332488..546e763 100644
--- a/test/com/esotericsoftware/reflectasm/MethodAccessTest.java
+++ b/test/com/esotericsoftware/reflectasm/MethodAccessTest.java
@@ -43,31 +43,31 @@ public class MethodAccessTest extends TestCase {
 			access.getIndex("name");
 			fail();
 		} catch (IllegalArgumentException expected) {
-			expected.printStackTrace();
+			// expected.printStackTrace();
 		}
 		try {
 			access.getIndex("name", String.class);
 			fail();
 		} catch (IllegalArgumentException expected) {
-			expected.printStackTrace();
+			// expected.printStackTrace();
 		}
 		try {
 			access.invoke(new EmptyClass(), "meow", "moo");
 			fail();
 		} catch (IllegalArgumentException expected) {
-			expected.printStackTrace();
+			// expected.printStackTrace();
 		}
 		try {
 			access.invoke(new EmptyClass(), 0);
 			fail();
 		} catch (IllegalArgumentException expected) {
-			expected.printStackTrace();
+			// expected.printStackTrace();
 		}
 		try {
 			access.invoke(new EmptyClass(), 0, "moo");
 			fail();
 		} catch (IllegalArgumentException expected) {
-			expected.printStackTrace();
+			// expected.printStackTrace();
 		}
 	}