diff --git a/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TIntBuffer.java b/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TIntBuffer.java
new file mode 100644
index 000000000..5612a698e
--- /dev/null
+++ b/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TIntBuffer.java
@@ -0,0 +1,197 @@
+/*
+ *  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 <konsoletyper@gmail.com>
+ */
+public abstract class TIntBuffer extends TBuffer implements Comparable<TIntBuffer> {
+    int start;
+    int[] array;
+
+    TIntBuffer(int start, int capacity, int[] array, int position, int limit) {
+        super(capacity);
+        this.start = start;
+        this.array = array;
+        this.position = position;
+        this.limit = limit;
+    }
+
+    public static TIntBuffer allocate(int capacity) {
+        if (capacity < 0) {
+            throw new IllegalArgumentException("Capacity is negative: " + capacity);
+        }
+        return new TIntBufferImpl(capacity);
+    }
+
+    public static TIntBuffer wrap(int[] array, int offset, int length) {
+        return new TIntBufferImpl(0, array.length, array, offset, offset + length, false);
+    }
+
+    public static TIntBuffer wrap(int[] array) {
+        return wrap(array, 0, array.length);
+    }
+
+    public abstract TIntBuffer slice();
+
+    public abstract TIntBuffer duplicate();
+
+    public abstract TIntBuffer asReadOnlyBuffer();
+
+    public abstract int get();
+
+    public abstract TIntBuffer put(int b);
+
+    public abstract int get(int index);
+
+    public abstract TIntBuffer put(int index, int b);
+
+    public TIntBuffer get(int[] dst, int offset, int length) {
+        if (offset < 0 || offset >= dst.length) {
+            throw new IndexOutOfBoundsException("Offset " + offset + " is outside of range [0;" + dst.length + ")");
+        }
+        if (offset + length > dst.length) {
+            throw new IndexOutOfBoundsException("The last int in dst " + (offset + length) + " is outside " +
+                    "of array of size " + dst.length);
+        }
+        if (remaining() < length) {
+            throw new TBufferUnderflowException();
+        }
+        if (length < 0) {
+            throw new IndexOutOfBoundsException("Length " + length + " must be non-negative");
+        }
+        int pos = position + start;
+        for (int i = 0; i < length; ++i) {
+            dst[offset++] = array[pos++];
+        }
+        position += length;
+        return this;
+    }
+
+    public TIntBuffer get(int[] dst) {
+        return get(dst, 0, dst.length);
+    }
+
+    public TIntBuffer put(TIntBuffer src) {
+        return put(src.array, src.start + src.position, src.remaining());
+    }
+
+    public TIntBuffer put(int[] src, int offset, int length) {
+        if (isReadOnly()) {
+            throw new TReadOnlyBufferException();
+        }
+        if (remaining() < length) {
+            throw new TBufferOverflowException();
+        }
+        if (offset < 0 || offset >= src.length) {
+            throw new IndexOutOfBoundsException("Offset " + offset + " is outside of range [0;" + src.length + ")");
+        }
+        if (offset + length > src.length) {
+            throw new IndexOutOfBoundsException("The last int in src " + (offset + length) + " is outside " +
+                    "of array of size " + src.length);
+        }
+        if (length < 0) {
+            throw new IndexOutOfBoundsException("Length " + length + " must be non-negative");
+        }
+        int pos = position + start;
+        for (int i = 0; i < length; ++i) {
+            array[pos++] = src[offset++];
+        }
+        position += length;
+        return this;
+    }
+
+    public final TIntBuffer put(int[] src) {
+        return put(src, 0, src.length);
+    }
+
+    @Override
+    public boolean hasArray() {
+        return true;
+    }
+
+    @Override
+    public final int[] array() {
+        return array;
+    }
+
+    @Override
+    public int arrayOffset() {
+        return start;
+    }
+
+    public abstract TIntBuffer compact();
+
+    @Override
+    public abstract boolean isDirect();
+
+    @Override
+    public String toString() {
+        return "[IntBuffer position=" + position + ", limit=" + limit + ", capacity=" + capacity + ", mark " +
+                (mark >= 0 ? " at " + mark : " is not set") + "]";
+    }
+
+    @Override
+    public int hashCode() {
+        int hashCode = 0;
+        int pos = position + start;
+        for (int i = position; i < limit; ++i) {
+            hashCode = 31 * hashCode + array[pos++];
+        }
+        return hashCode;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (!(obj instanceof TIntBuffer)) {
+            return false;
+        }
+        TIntBuffer other = (TIntBuffer)obj;
+        int sz = remaining();
+        if (sz != other.remaining()) {
+            return false;
+        }
+        int a = position + start;
+        int b = other.position + other.start;
+        for (int i = 0; i < sz; ++i) {
+            if (array[a++] != other.array[b++]) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public int compareTo(TIntBuffer other) {
+        if (this == other) {
+            return 0;
+        }
+        int sz = Math.min(remaining(), other.remaining());
+        int a = position + start;
+        int b = other.position + other.start;
+        for (int i = 0; i < sz; ++i) {
+            int r = Integer.compare(array[a++], other.array[b++]);
+            if (r != 0) {
+                return r;
+            }
+        }
+        return Integer.compare(remaining(), other.remaining());
+    }
+}
diff --git a/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TIntBufferImpl.java b/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TIntBufferImpl.java
new file mode 100644
index 000000000..f970eae62
--- /dev/null
+++ b/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TIntBufferImpl.java
@@ -0,0 +1,117 @@
+/*
+ *  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 <konsoletyper@gmail.com>
+ */
+class TIntBufferImpl extends TIntBuffer {
+    private boolean readOnly;
+
+    public TIntBufferImpl(int capacity) {
+        this(0, capacity, new int[capacity], 0, capacity, false);
+    }
+
+    public TIntBufferImpl(int start, int capacity, int[] array, int position, int limit, boolean readOnly) {
+        super(start, capacity, array, position, limit);
+        this.readOnly = readOnly;
+    }
+
+    @Override
+    public TIntBuffer slice() {
+        return new TIntBufferImpl(position, limit - position,  array, 0, limit - position, readOnly);
+    }
+
+    @Override
+    public TIntBuffer duplicate() {
+        return new TIntBufferImpl(start, capacity, array, position, limit, readOnly);
+    }
+
+    @Override
+    public TIntBuffer asReadOnlyBuffer() {
+        return new TIntBufferImpl(start, capacity, array, position, limit, true);
+    }
+
+    @Override
+    public int get() {
+        if (position >= limit) {
+            throw new TBufferUnderflowException();
+        }
+        return array[start + position++];
+    }
+
+    @Override
+    public TIntBuffer put(int b) {
+        if (readOnly) {
+            throw new TReadOnlyBufferException();
+        }
+        if (position >= limit) {
+            throw new TBufferOverflowException();
+        }
+        array[start + position++] = b;
+        return this;
+    }
+
+    @Override
+    public int get(int index) {
+        if (index < 0 || index >= limit) {
+            throw new IndexOutOfBoundsException("Index " + index + " is outside of range [0;" + limit + ")");
+        }
+        return array[start + index];
+    }
+
+    @Override
+    public TIntBuffer put(int index, int b) {
+        if (readOnly) {
+            throw new TReadOnlyBufferException();
+        }
+        if (index < 0 || index >= limit) {
+            throw new IndexOutOfBoundsException("Index " + index + " is outside of range [0;" + limit + ")");
+        }
+        array[start + index] = b;
+        return this;
+    }
+
+    @Override
+    public TIntBuffer compact() {
+        if (readOnly) {
+            throw new TReadOnlyBufferException();
+        }
+        if (position > 0) {
+            int sz = remaining();
+            int dst = start;
+            int src = start + position;
+            for (int i = 0; i < sz; ++i) {
+                array[dst++] = array[src++];
+            }
+            position = sz;
+        }
+        limit = capacity;
+        mark = -1;
+        return this;
+    }
+
+    @Override
+    public boolean isDirect() {
+        return false;
+    }
+
+    @Override
+    public boolean isReadOnly() {
+        return readOnly;
+    }
+}
diff --git a/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TShortBuffer.java b/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TShortBuffer.java
new file mode 100644
index 000000000..5a1940713
--- /dev/null
+++ b/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TShortBuffer.java
@@ -0,0 +1,197 @@
+/*
+ *  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 <konsoletyper@gmail.com>
+ */
+public abstract class TShortBuffer extends TBuffer implements Comparable<TShortBuffer> {
+    int start;
+    short[] array;
+
+    TShortBuffer(int start, int capacity, short[] array, int position, int limit) {
+        super(capacity);
+        this.start = start;
+        this.array = array;
+        this.position = position;
+        this.limit = limit;
+    }
+
+    public static TShortBuffer allocate(int capacity) {
+        if (capacity < 0) {
+            throw new IllegalArgumentException("Capacity is negative: " + capacity);
+        }
+        return new TShortBufferImpl(capacity);
+    }
+
+    public static TShortBuffer wrap(short[] array, int offset, int length) {
+        return new TShortBufferImpl(0, array.length, array, offset, offset + length, false);
+    }
+
+    public static TShortBuffer wrap(short[] array) {
+        return wrap(array, 0, array.length);
+    }
+
+    public abstract TShortBuffer slice();
+
+    public abstract TShortBuffer duplicate();
+
+    public abstract TShortBuffer asReadOnlyBuffer();
+
+    public abstract short get();
+
+    public abstract TShortBuffer put(short b);
+
+    public abstract short get(int index);
+
+    public abstract TShortBuffer put(int index, short b);
+
+    public TShortBuffer get(short[] dst, int offset, int length) {
+        if (offset < 0 || offset >= dst.length) {
+            throw new IndexOutOfBoundsException("Offset " + offset + " is outside of range [0;" + dst.length + ")");
+        }
+        if (offset + length > dst.length) {
+            throw new IndexOutOfBoundsException("The last short in dst " + (offset + length) + " is outside " +
+                    "of array of size " + dst.length);
+        }
+        if (remaining() < length) {
+            throw new TBufferUnderflowException();
+        }
+        if (length < 0) {
+            throw new IndexOutOfBoundsException("Length " + length + " must be non-negative");
+        }
+        int pos = position + start;
+        for (int i = 0; i < length; ++i) {
+            dst[offset++] = array[pos++];
+        }
+        position += length;
+        return this;
+    }
+
+    public TShortBuffer get(short[] dst) {
+        return get(dst, 0, dst.length);
+    }
+
+    public TShortBuffer put(TShortBuffer src) {
+        return put(src.array, src.start + src.position, src.remaining());
+    }
+
+    public TShortBuffer put(short[] src, int offset, int length) {
+        if (isReadOnly()) {
+            throw new TReadOnlyBufferException();
+        }
+        if (remaining() < length) {
+            throw new TBufferOverflowException();
+        }
+        if (offset < 0 || offset >= src.length) {
+            throw new IndexOutOfBoundsException("Offset " + offset + " is outside of range [0;" + src.length + ")");
+        }
+        if (offset + length > src.length) {
+            throw new IndexOutOfBoundsException("The last short in src " + (offset + length) + " is outside " +
+                    "of array of size " + src.length);
+        }
+        if (length < 0) {
+            throw new IndexOutOfBoundsException("Length " + length + " must be non-negative");
+        }
+        int pos = position + start;
+        for (int i = 0; i < length; ++i) {
+            array[pos++] = src[offset++];
+        }
+        position += length;
+        return this;
+    }
+
+    public final TShortBuffer put(short[] src) {
+        return put(src, 0, src.length);
+    }
+
+    @Override
+    public boolean hasArray() {
+        return true;
+    }
+
+    @Override
+    public final short[] array() {
+        return array;
+    }
+
+    @Override
+    public int arrayOffset() {
+        return start;
+    }
+
+    public abstract TShortBuffer compact();
+
+    @Override
+    public abstract boolean isDirect();
+
+    @Override
+    public String toString() {
+        return "[ShortBuffer position=" + position + ", limit=" + limit + ", capacity=" + capacity + ", mark " +
+                (mark >= 0 ? " at " + mark : " is not set") + "]";
+    }
+
+    @Override
+    public int hashCode() {
+        int hashCode = 0;
+        int pos = position + start;
+        for (int i = position; i < limit; ++i) {
+            hashCode = 31 * hashCode + array[pos++];
+        }
+        return hashCode;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (!(obj instanceof TShortBuffer)) {
+            return false;
+        }
+        TShortBuffer other = (TShortBuffer)obj;
+        int sz = remaining();
+        if (sz != other.remaining()) {
+            return false;
+        }
+        int a = position + start;
+        int b = other.position + other.start;
+        for (int i = 0; i < sz; ++i) {
+            if (array[a++] != other.array[b++]) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public int compareTo(TShortBuffer other) {
+        if (this == other) {
+            return 0;
+        }
+        int sz = Math.min(remaining(), other.remaining());
+        int a = position + start;
+        int b = other.position + other.start;
+        for (int i = 0; i < sz; ++i) {
+            int r = Short.compare(array[a++], other.array[b++]);
+            if (r != 0) {
+                return r;
+            }
+        }
+        return Integer.compare(remaining(), other.remaining());
+    }
+}
diff --git a/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TShortBufferImpl.java b/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TShortBufferImpl.java
new file mode 100644
index 000000000..a31506f9c
--- /dev/null
+++ b/teavm-classlib/src/main/java/org/teavm/classlib/java/nio/TShortBufferImpl.java
@@ -0,0 +1,117 @@
+/*
+ *  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 <konsoletyper@gmail.com>
+ */
+class TShortBufferImpl extends TShortBuffer {
+    private boolean readOnly;
+
+    public TShortBufferImpl(int capacity) {
+        this(0, capacity, new short[capacity], 0, capacity, false);
+    }
+
+    public TShortBufferImpl(int start, int capacity, short[] array, int position, int limit, boolean readOnly) {
+        super(start, capacity, array, position, limit);
+        this.readOnly = readOnly;
+    }
+
+    @Override
+    public TShortBuffer slice() {
+        return new TShortBufferImpl(position, limit - position,  array, 0, limit - position, readOnly);
+    }
+
+    @Override
+    public TShortBuffer duplicate() {
+        return new TShortBufferImpl(start, capacity, array, position, limit, readOnly);
+    }
+
+    @Override
+    public TShortBuffer asReadOnlyBuffer() {
+        return new TShortBufferImpl(start, capacity, array, position, limit, true);
+    }
+
+    @Override
+    public short get() {
+        if (position >= limit) {
+            throw new TBufferUnderflowException();
+        }
+        return array[start + position++];
+    }
+
+    @Override
+    public TShortBuffer put(short b) {
+        if (readOnly) {
+            throw new TReadOnlyBufferException();
+        }
+        if (position >= limit) {
+            throw new TBufferOverflowException();
+        }
+        array[start + position++] = b;
+        return this;
+    }
+
+    @Override
+    public short get(int index) {
+        if (index < 0 || index >= limit) {
+            throw new IndexOutOfBoundsException("Index " + index + " is outside of range [0;" + limit + ")");
+        }
+        return array[start + index];
+    }
+
+    @Override
+    public TShortBuffer put(int index, short b) {
+        if (readOnly) {
+            throw new TReadOnlyBufferException();
+        }
+        if (index < 0 || index >= limit) {
+            throw new IndexOutOfBoundsException("Index " + index + " is outside of range [0;" + limit + ")");
+        }
+        array[start + index] = b;
+        return this;
+    }
+
+    @Override
+    public TShortBuffer compact() {
+        if (readOnly) {
+            throw new TReadOnlyBufferException();
+        }
+        if (position > 0) {
+            int sz = remaining();
+            int dst = start;
+            int src = start + position;
+            for (int i = 0; i < sz; ++i) {
+                array[dst++] = array[src++];
+            }
+            position = sz;
+        }
+        limit = capacity;
+        mark = -1;
+        return this;
+    }
+
+    @Override
+    public boolean isDirect() {
+        return false;
+    }
+
+    @Override
+    public boolean isReadOnly() {
+        return readOnly;
+    }
+}
diff --git a/teavm-classlib/src/test/java/org/teavm/classlib/java/nio/IntBufferTest.java b/teavm-classlib/src/test/java/org/teavm/classlib/java/nio/IntBufferTest.java
new file mode 100644
index 000000000..609ceab77
--- /dev/null
+++ b/teavm-classlib/src/test/java/org/teavm/classlib/java/nio/IntBufferTest.java
@@ -0,0 +1,370 @@
+/*
+ *  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;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.CoreMatchers.sameInstance;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.fail;
+import java.nio.*;
+import org.junit.Test;
+
+/**
+ *
+ * @author Alexey Andreev <konsoletyper@gmail.com>
+ */
+public class IntBufferTest {
+    @Test
+    public void allocatesSimple() {
+        IntBuffer buffer = IntBuffer.allocate(100);
+        assertThat(buffer.isDirect(), is(false));
+        assertThat(buffer.isReadOnly(), is(false));
+        assertThat(buffer.hasArray(), is(true));
+        assertThat(buffer.capacity(), is(100));
+        assertThat(buffer.position(), is(0));
+        assertThat(buffer.limit(), is(100));
+        try {
+            buffer.reset();
+            fail("Mark is expected to be undefined");
+        } catch (InvalidMarkException e) {
+            // ok
+        }
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void errorIfAllocatingBufferOfNegativeSize() {
+        IntBuffer.allocate(-1);
+    }
+
+    @Test
+    public void wrapsArray() {
+        int[] array = new int[100];
+        IntBuffer buffer = IntBuffer.wrap(array, 10, 70);
+        assertThat(buffer.isDirect(), is(false));
+        assertThat(buffer.isReadOnly(), is(false));
+        assertThat(buffer.hasArray(), is(true));
+        assertThat(buffer.array(), is(array));
+        assertThat(buffer.arrayOffset(), is(0));
+        assertThat(buffer.capacity(), is(100));
+        assertThat(buffer.position(), is(10));
+        assertThat(buffer.limit(), is(80));
+        try {
+            buffer.reset();
+            fail("Mark is expected to be undefined");
+        } catch (InvalidMarkException e) {
+            // ok
+        }
+        array[0] = 23;
+        assertThat(buffer.get(0), is(23));
+        buffer.put(1, 24);
+        assertThat(array[1], is(24));
+    }
+
+    @Test
+    public void errorWhenWrappingWithWrongParameters() {
+        int[] array = new int[100];
+        try {
+            IntBuffer.wrap(array, -1, 10);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+        try {
+            IntBuffer.wrap(array, 101, 10);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+        try {
+            IntBuffer.wrap(array, 98, 3);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+        try {
+            IntBuffer.wrap(array, 98, -1);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+    }
+
+    @Test
+    public void wrapsArrayWithoutOffset() {
+        int[] array = new int[100];
+        IntBuffer buffer = IntBuffer.wrap(array);
+        assertThat(buffer.position(), is(0));
+        assertThat(buffer.limit(), is(100));
+    }
+
+    @Test
+    public void createsSlice() {
+        IntBuffer buffer = IntBuffer.allocate(100);
+        buffer.put(new int[60]);
+        buffer.flip();
+        buffer.put(new int[15]);
+        IntBuffer slice = buffer.slice();
+        assertThat(slice.array(), is(buffer.array()));
+        assertThat(slice.position(), is(0));
+        assertThat(slice.capacity(), is(45));
+        assertThat(slice.limit(), is(45));
+        assertThat(slice.isDirect(), is(false));
+        assertThat(slice.isReadOnly(), is(false));
+        slice.put(3, 23);
+        assertThat(buffer.get(18), is(23));
+        slice.put(24);
+        assertThat(buffer.get(15), is(24));
+        buffer.put(16, 25);
+        assertThat(slice.get(1), is(25));
+    }
+
+    @Test
+    public void slicePropertiesSameWithOriginal() {
+        IntBuffer buffer = IntBuffer.allocate(100).asReadOnlyBuffer().slice();
+        assertThat(buffer.isReadOnly(), is(true));
+    }
+
+    @Test
+    public void createsDuplicate() {
+        IntBuffer buffer = IntBuffer.allocate(100);
+        buffer.put(new int[60]);
+        buffer.flip();
+        buffer.put(new int[15]);
+        IntBuffer duplicate = buffer.duplicate();
+        assertThat(duplicate.array(), is(buffer.array()));
+        assertThat(duplicate.position(), is(15));
+        assertThat(duplicate.capacity(), is(100));
+        assertThat(duplicate.limit(), is(60));
+        assertThat(duplicate.isDirect(), is(false));
+        assertThat(duplicate.isReadOnly(), is(false));
+        duplicate.put(3, 23);
+        assertThat(buffer.get(3), is(23));
+        duplicate.put(24);
+        assertThat(buffer.get(15), is(24));
+        buffer.put(1, 25);
+        assertThat(duplicate.get(1), is(25));
+        assertThat(duplicate.array(), is(sameInstance(buffer.array())));
+    }
+
+    @Test
+    public void getsInt() {
+        int[] array = { 2, 3, 5, 7 };
+        IntBuffer buffer = IntBuffer.wrap(array);
+        assertThat(buffer.get(), is(2));
+        assertThat(buffer.get(), is(3));
+        buffer = buffer.slice();
+        assertThat(buffer.get(), is(5));
+        assertThat(buffer.get(), is(7));
+    }
+
+    @Test
+    public void gettingIntFromEmptyBufferCausesError() {
+        int[] array = { 2, 3, 5, 7 };
+        IntBuffer buffer = IntBuffer.wrap(array);
+        buffer.limit(2);
+        buffer.get();
+        buffer.get();
+        try {
+            buffer.get();
+            fail("Should have thrown error");
+        } catch (BufferUnderflowException e) {
+            // ok
+        }
+    }
+
+    @Test
+    public void putsInt() {
+        int[] array = new int[4];
+        IntBuffer buffer = IntBuffer.wrap(array);
+        buffer.put(2).put(3).put(5).put(7);
+        assertThat(array, is(new int[] { 2, 3, 5, 7 }));
+    }
+
+    @Test
+    public void puttingIntToEmptyBufferCausesError() {
+        int[] array = new int[4];
+        IntBuffer buffer = IntBuffer.wrap(array);
+        buffer.limit(2);
+        buffer.put(2).put(3);
+        try {
+            buffer.put(5);
+            fail("Should have thrown error");
+        } catch (BufferOverflowException e) {
+            assertThat(array[2], is(0));
+        }
+    }
+
+    @Test(expected = ReadOnlyBufferException.class)
+    public void puttingIntToReadOnlyBufferCausesError() {
+        int[] array = new int[4];
+        IntBuffer buffer = IntBuffer.wrap(array).asReadOnlyBuffer();
+        buffer.put(2);
+    }
+
+    @Test
+    public void getsIntFromGivenLocation() {
+        int[] array = { 2, 3, 5, 7 };
+        IntBuffer buffer = IntBuffer.wrap(array);
+        assertThat(buffer.get(0), is(2));
+        assertThat(buffer.get(1), is(3));
+        buffer.get();
+        buffer = buffer.slice();
+        assertThat(buffer.get(1), is(5));
+        assertThat(buffer.get(2), is(7));
+    }
+
+    @Test
+    public void gettingIntFromWrongLocationCausesError() {
+        int[] array = { 2, 3, 5, 7 };
+        IntBuffer buffer = IntBuffer.wrap(array);
+        buffer.limit(3);
+        try {
+            buffer.get(-1);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+        try {
+            buffer.get(3);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+    }
+
+    @Test
+    public void putsIntToGivenLocation() {
+        int[] array = new int[4];
+        IntBuffer buffer = IntBuffer.wrap(array);
+        buffer.put(0, 2);
+        buffer.put(1, 3);
+        buffer.get();
+        buffer = buffer.slice();
+        buffer.put(1, 5);
+        buffer.put(2, 7);
+        assertThat(array, is(new int[] { 2, 3, 5, 7 }));
+    }
+
+    @Test
+    public void puttingIntToWrongLocationCausesError() {
+        int[] array = new int[4];
+        IntBuffer buffer = IntBuffer.wrap(array);
+        buffer.limit(3);
+        try {
+            buffer.put(-1, 2);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+        try {
+            buffer.put(3, 2);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+    }
+
+    @Test(expected = ReadOnlyBufferException.class)
+    public void puttingIntToGivenLocationOfReadOnlyBufferCausesError() {
+        int[] array = new int[4];
+        IntBuffer buffer = IntBuffer.wrap(array).asReadOnlyBuffer();
+        buffer.put(0, 2);
+    }
+
+    @Test
+    public void getsInts() {
+        int[] array = { 2, 3, 5, 7 };
+        IntBuffer buffer = IntBuffer.wrap(array);
+        buffer.get();
+        int[] receiver = new int[2];
+        buffer.get(receiver, 0, 2);
+        assertThat(buffer.position(), is(3));
+        assertThat(receiver, is(new int[] { 3, 5 }));
+    }
+
+    @Test
+    public void gettingIntsFromEmptyBufferCausesError() {
+        int[] array = { 2, 3, 5, 7 };
+        IntBuffer buffer = IntBuffer.wrap(array);
+        buffer.limit(3);
+        int[] receiver = new int[4];
+        try {
+            buffer.get(receiver, 0, 4);
+            fail("Error expected");
+        } catch (BufferUnderflowException e) {
+            assertThat(receiver, is(new int[4]));
+            assertThat(buffer.position(), is(0));
+        }
+    }
+
+    @Test
+    public void gettingIntsWithIllegalArgumentsCausesError() {
+        int[] array = { 2, 3, 5, 7 };
+        IntBuffer buffer = IntBuffer.wrap(array);
+        int[] receiver = new int[4];
+        try {
+            buffer.get(receiver, 0, 5);
+        } catch (IndexOutOfBoundsException e) {
+            assertThat(receiver, is(new int[4]));
+            assertThat(buffer.position(), is(0));
+        }
+        try {
+            buffer.get(receiver, -1, 3);
+        } catch (IndexOutOfBoundsException e) {
+            assertThat(receiver, is(new int[4]));
+            assertThat(buffer.position(), is(0));
+        }
+        try {
+            buffer.get(receiver, 6, 3);
+        } catch (IndexOutOfBoundsException e) {
+            assertThat(receiver, is(new int[4]));
+            assertThat(buffer.position(), is(0));
+        }
+    }
+
+    @Test
+    public void putsInts() {
+        int[] array = new int[4];
+        IntBuffer buffer = IntBuffer.wrap(array);
+        buffer.get();
+        int[] data = { 2, 3 };
+        buffer.put(data, 0, 2);
+        assertThat(buffer.position(), is(3));
+        assertThat(array, is(new int[] {0, 2, 3, 0 }));
+    }
+
+    @Test
+    public void compacts() {
+        int[] array = { 2, 3, 5, 7 };
+        IntBuffer buffer = IntBuffer.wrap(array);
+        buffer.get();
+        buffer.mark();
+        buffer.compact();
+        assertThat(array, is(new int[] { 3, 5, 7, 7 }));
+        assertThat(buffer.position(), is(3));
+        assertThat(buffer.limit(), is(4));
+        assertThat(buffer.capacity(), is(4));
+        try {
+            buffer.reset();
+            fail("Exception expected");
+        } catch (InvalidMarkException e) {
+            // ok
+        }
+    }
+
+    @Test
+    public void marksPosition() {
+        int[] array = { 2, 3, 5, 7 };
+        IntBuffer buffer = IntBuffer.wrap(array);
+        buffer.position(1);
+        buffer.mark();
+        buffer.position(2);
+        buffer.reset();
+        assertThat(buffer.position(), is(1));
+    }
+}
diff --git a/teavm-classlib/src/test/java/org/teavm/classlib/java/nio/ShortBufferTest.java b/teavm-classlib/src/test/java/org/teavm/classlib/java/nio/ShortBufferTest.java
new file mode 100644
index 000000000..66bf0521c
--- /dev/null
+++ b/teavm-classlib/src/test/java/org/teavm/classlib/java/nio/ShortBufferTest.java
@@ -0,0 +1,354 @@
+package org.teavm.classlib.java.nio;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.fail;
+import java.nio.*;
+import org.junit.Test;
+
+/**
+ *
+ * @author Alexey Andreev
+ */
+public class ShortBufferTest {
+    @Test
+    public void allocatesSimple() {
+        ShortBuffer buffer = ShortBuffer.allocate(100);
+        assertThat(buffer.isDirect(), is(false));
+        assertThat(buffer.isReadOnly(), is(false));
+        assertThat(buffer.hasArray(), is(true));
+        assertThat(buffer.capacity(), is(100));
+        assertThat(buffer.position(), is(0));
+        assertThat(buffer.limit(), is(100));
+        try {
+            buffer.reset();
+            fail("Mark is expected to be undefined");
+        } catch (InvalidMarkException e) {
+            // ok
+        }
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void errorIfAllocatingBufferOfNegativeSize() {
+        ShortBuffer.allocate(-1);
+    }
+
+    @Test
+    public void wrapsArray() {
+        short[] array = new short[100];
+        ShortBuffer buffer = ShortBuffer.wrap(array, 10, 70);
+        assertThat(buffer.isDirect(), is(false));
+        assertThat(buffer.isReadOnly(), is(false));
+        assertThat(buffer.hasArray(), is(true));
+        assertThat(buffer.array(), is(array));
+        assertThat(buffer.arrayOffset(), is(0));
+        assertThat(buffer.capacity(), is(100));
+        assertThat(buffer.position(), is(10));
+        assertThat(buffer.limit(), is(80));
+        try {
+            buffer.reset();
+            fail("Mark is expected to be undefined");
+        } catch (InvalidMarkException e) {
+            // ok
+        }
+        array[0] = 23;
+        assertThat(buffer.get(0), is((short)23));
+        buffer.put(1, (short)24);
+        assertThat(array[1], is((short)24));
+    }
+
+    @Test
+    public void errorWhenWrappingWithWrongParameters() {
+        short[] array = new short[100];
+        try {
+            ShortBuffer.wrap(array, -1, 10);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+        try {
+            ShortBuffer.wrap(array, 101, 10);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+        try {
+            ShortBuffer.wrap(array, 98, 3);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+        try {
+            ShortBuffer.wrap(array, 98, -1);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+    }
+
+    @Test
+    public void wrapsArrayWithoutOffset() {
+        short[] array = new short[100];
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        assertThat(buffer.position(), is(0));
+        assertThat(buffer.limit(), is(100));
+    }
+
+    @Test
+    public void createsSlice() {
+        ShortBuffer buffer = ShortBuffer.allocate(100);
+        buffer.put(new short[60]);
+        buffer.flip();
+        buffer.put(new short[15]);
+        ShortBuffer slice = buffer.slice();
+        assertThat(slice.array(), is(buffer.array()));
+        assertThat(slice.position(), is(0));
+        assertThat(slice.capacity(), is(45));
+        assertThat(slice.limit(), is(45));
+        assertThat(slice.isDirect(), is(false));
+        assertThat(slice.isReadOnly(), is(false));
+        slice.put(3, (short)23);
+        assertThat(buffer.get(18), is((short)23));
+        slice.put((short)24);
+        assertThat(buffer.get(15), is((short)24));
+        buffer.put(16, (short)25);
+        assertThat(slice.get(1), is((short)25));
+    }
+
+    @Test
+    public void slicePropertiesSameWithOriginal() {
+        ShortBuffer buffer = ShortBuffer.allocate(100).asReadOnlyBuffer().slice();
+        assertThat(buffer.isReadOnly(), is(true));
+    }
+
+    @Test
+    public void createsDuplicate() {
+        ShortBuffer buffer = ShortBuffer.allocate(100);
+        buffer.put(new short[60]);
+        buffer.flip();
+        buffer.put(new short[15]);
+        ShortBuffer duplicate = buffer.duplicate();
+        assertThat(duplicate.array(), is(buffer.array()));
+        assertThat(duplicate.position(), is(15));
+        assertThat(duplicate.capacity(), is(100));
+        assertThat(duplicate.limit(), is(60));
+        assertThat(duplicate.isDirect(), is(false));
+        assertThat(duplicate.isReadOnly(), is(false));
+        duplicate.put(3, (short)23);
+        assertThat(buffer.get(3), is((short)23));
+        duplicate.put((short)24);
+        assertThat(buffer.get(15), is((short)24));
+        buffer.put(1, (short)25);
+        assertThat(duplicate.get(1), is((short)25));
+        assertThat(duplicate.array(), is(sameInstance(buffer.array())));
+    }
+
+    @Test
+    public void getsShort() {
+        short[] array = { 2, 3, 5, 7 };
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        assertThat(buffer.get(), is((short)2));
+        assertThat(buffer.get(), is((short)3));
+        buffer = buffer.slice();
+        assertThat(buffer.get(), is((short)5));
+        assertThat(buffer.get(), is((short)7));
+    }
+
+    @Test
+    public void gettingShortFromEmptyBufferCausesError() {
+        short[] array = { 2, 3, 5, 7 };
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        buffer.limit(2);
+        buffer.get();
+        buffer.get();
+        try {
+            buffer.get();
+            fail("Should have thrown error");
+        } catch (BufferUnderflowException e) {
+            // ok
+        }
+    }
+
+    @Test
+    public void putsShort() {
+        short[] array = new short[4];
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        buffer.put((short)2).put((short)3).put((short)5).put((short)7);
+        assertThat(array, is(new short[] { 2, 3, 5, 7 }));
+    }
+
+    @Test
+    public void puttingShortToEmptyBufferCausesError() {
+        short[] array = new short[4];
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        buffer.limit(2);
+        buffer.put((short)2).put((short)3);
+        try {
+            buffer.put((short)5);
+            fail("Should have thrown error");
+        } catch (BufferOverflowException e) {
+            assertThat(array[2], is((short)0));
+        }
+    }
+
+    @Test(expected = ReadOnlyBufferException.class)
+    public void puttingShortToReadOnlyBufferCausesError() {
+        short[] array = new short[4];
+        ShortBuffer buffer = ShortBuffer.wrap(array).asReadOnlyBuffer();
+        buffer.put((short)2);
+    }
+
+    @Test
+    public void getsShortFromGivenLocation() {
+        short[] array = { 2, 3, 5, 7 };
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        assertThat(buffer.get(0), is((short)2));
+        assertThat(buffer.get(1), is((short)3));
+        buffer.get();
+        buffer = buffer.slice();
+        assertThat(buffer.get(1), is((short)5));
+        assertThat(buffer.get(2), is((short)7));
+    }
+
+    @Test
+    public void gettingShortFromWrongLocationCausesError() {
+        short[] array = { 2, 3, 5, 7 };
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        buffer.limit(3);
+        try {
+            buffer.get(-1);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+        try {
+            buffer.get(3);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+    }
+
+    @Test
+    public void putsShortToGivenLocation() {
+        short[] array = new short[4];
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        buffer.put(0, (short)2);
+        buffer.put(1, (short)3);
+        buffer.get();
+        buffer = buffer.slice();
+        buffer.put(1, (short)5);
+        buffer.put(2, (short)7);
+        assertThat(array, is(new short[] { 2, 3, 5, 7 }));
+    }
+
+    @Test
+    public void puttingShortToWrongLocationCausesError() {
+        short[] array = new short[4];
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        buffer.limit(3);
+        try {
+            buffer.put(-1, (short)2);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+        try {
+            buffer.put(3, (short)2);
+        } catch (IndexOutOfBoundsException e) {
+            // ok
+        }
+    }
+
+    @Test(expected = ReadOnlyBufferException.class)
+    public void puttingShortToGivenLocationOfReadOnlyBufferCausesError() {
+        short[] array = new short[4];
+        ShortBuffer buffer = ShortBuffer.wrap(array).asReadOnlyBuffer();
+        buffer.put(0, (short)2);
+    }
+
+    @Test
+    public void getsShorts() {
+        short[] array = { 2, 3, 5, 7 };
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        buffer.get();
+        short[] receiver = new short[2];
+        buffer.get(receiver, 0, 2);
+        assertThat(buffer.position(), is(3));
+        assertThat(receiver, is(new short[] { 3, 5 }));
+    }
+
+    @Test
+    public void gettingShortsFromEmptyBufferCausesError() {
+        short[] array = { 2, 3, 5, 7 };
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        buffer.limit(3);
+        short[] receiver = new short[4];
+        try {
+            buffer.get(receiver, 0, 4);
+            fail("Error expected");
+        } catch (BufferUnderflowException e) {
+            assertThat(receiver, is(new short[4]));
+            assertThat(buffer.position(), is(0));
+        }
+    }
+
+    @Test
+    public void gettingShortsWithIllegalArgumentsCausesError() {
+        short[] array = { 2, 3, 5, 7 };
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        short[] receiver = new short[4];
+        try {
+            buffer.get(receiver, 0, 5);
+        } catch (IndexOutOfBoundsException e) {
+            assertThat(receiver, is(new short[4]));
+            assertThat(buffer.position(), is(0));
+        }
+        try {
+            buffer.get(receiver, -1, 3);
+        } catch (IndexOutOfBoundsException e) {
+            assertThat(receiver, is(new short[4]));
+            assertThat(buffer.position(), is(0));
+        }
+        try {
+            buffer.get(receiver, 6, 3);
+        } catch (IndexOutOfBoundsException e) {
+            assertThat(receiver, is(new short[4]));
+            assertThat(buffer.position(), is(0));
+        }
+    }
+
+    @Test
+    public void putsShorts() {
+        short[] array = new short[4];
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        buffer.get();
+        short[] data = { 2, 3 };
+        buffer.put(data, 0, 2);
+        assertThat(buffer.position(), is(3));
+        assertThat(array, is(new short[] {0, 2, 3, 0 }));
+    }
+
+    @Test
+    public void compacts() {
+        short[] array = { 2, 3, 5, 7 };
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        buffer.get();
+        buffer.mark();
+        buffer.compact();
+        assertThat(array, is(new short[] { 3, 5, 7, 7 }));
+        assertThat(buffer.position(), is(3));
+        assertThat(buffer.limit(), is(4));
+        assertThat(buffer.capacity(), is(4));
+        try {
+            buffer.reset();
+            fail("Exception expected");
+        } catch (InvalidMarkException e) {
+            // ok
+        }
+    }
+
+    @Test
+    public void marksPosition() {
+        short[] array = { 2, 3, 5, 7 };
+        ShortBuffer buffer = ShortBuffer.wrap(array);
+        buffer.position(1);
+        buffer.mark();
+        buffer.position(2);
+        buffer.reset();
+        assertThat(buffer.position(), is(1));
+    }
+}