diff --git a/teavm-classlib/src/main/java/org/teavm/classlib/java/io/TExternalizable.java b/teavm-classlib/src/main/java/org/teavm/classlib/java/io/TExternalizable.java
new file mode 100644
index 000000000..c79af271c
--- /dev/null
+++ b/teavm-classlib/src/main/java/org/teavm/classlib/java/io/TExternalizable.java
@@ -0,0 +1,23 @@
+/*
+ *  Copyright 2014 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.classlib.java.io;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public interface TExternalizable {
+}
diff --git a/teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TString.java b/teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TString.java
index 3bb4bb95f..f50977e12 100644
--- a/teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TString.java
+++ b/teavm-classlib/src/main/java/org/teavm/classlib/java/lang/TString.java
@@ -504,6 +504,21 @@ public class TString extends TObject implements TSerializable, TComparable<TStri
         return true;
     }
 
+    public boolean equalsIgnoreCase(TString other) {
+        if (this == other) {
+            return true;
+        }
+        if (length() != other.length()) {
+            return false;
+        }
+        for (int i = 0; i < length(); ++i) {
+            if (TCharacter.toLowerCase(charAt(i)) != TCharacter.toLowerCase(other.charAt(i))) {
+                return false;
+            }
+        }
+        return true;
+    }
+
     public byte[] getBytes(TString charsetName) throws TUnsupportedEncodingException {
         Charset charset = Charset.get(charsetName.toString());
         if (charset == null) {
diff --git a/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TByteOrder.java b/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TByteOrder.java
new file mode 100644
index 000000000..9628ab746
--- /dev/null
+++ b/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TByteOrder.java
@@ -0,0 +1,39 @@
+/*
+ *  Copyright 2014 Alexey Andreev.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+package org.teavm.classlib.java.nio;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public final class TByteOrder {
+    public static final TByteOrder BIG_ENDIAN = new TByteOrder("BIG_ENDIAN");
+    public static final TByteOrder LITTLE_ENDIAN = new TByteOrder("BIG_ENDIAN");
+    private String name;
+
+    private TByteOrder(String name) {
+        this.name = name;
+    }
+
+    public static TByteOrder nativeOrder() {
+        return BIG_ENDIAN;
+    }
+
+    @Override
+    public String toString() {
+        return name;
+    }
+}