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diff --git a/java/lang/invoke/MethodType.java b/java/lang/invoke/MethodType.java
new file mode 100644
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+/* MethodType.java -- Method handle argument and return types.
+   Copyright (C) 2011 Free Software Foundation
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package java.lang.invoke;
+
+import java.io.Serializable;
+import java.util.List;
+
+/**
+ * A MethodType represents argument and return types of method handles.
+ *
+ * @since 1.7
+ */
+public final class MethodType
+  implements Serializable
+{
+  MethodType(Class<?> rtype, Class<?>[] ptypes)
+  {
+    this.rtype  = rtype;
+    this.ptypes = ptypes;
+  }
+
+  public static MethodType methodType(Class<?> rtype, Class<?>[] ptypes)
+  {
+    return new MethodType(rtype, ptypes);
+  }
+
+  public static MethodType methodType(Class<?> rtype, List<Class<?>> ptypes)
+  {
+    return methodType(rtype, ptypes.toArray(new Class<?>[0]));
+  }
+
+  public static MethodType methodType(Class<?> rtype, Class<?> ptype0, Class<?>... ptypes)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public static MethodType methodType(Class<?> rtype)
+  {
+    return methodType(rtype, new Class<?>[0]);
+  }
+
+  public static MethodType methodType(Class<?> rtype, Class<?> ptype0)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public static MethodType methodType(Class<?> rtype, MethodType ptypes)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public static MethodType genericMethodType(int paramCount, boolean lastIsArray)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public static MethodType genericMethodType(int paramCount)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public MethodType changeParameterType(int idx, Class<?> nptype)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public MethodType insertParameterTypes(int idx, Class<?>... ptypes)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public MethodType appendParameterTypes(Class<?>... ptypes)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public MethodType insertParameterTypes(int idx, List<Class<?>> ptypes)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public MethodType appendParameterTypes(List<Class<?>> ptypes)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public MethodType dropParameterTypes(int start, int end)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public MethodType changeReturnType(Class<?> type)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public boolean hasPrimitives()
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public boolean hasWrappers()
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public MethodType erase()
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public MethodType generic()
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public MethodType wrap()
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public MethodType unwrap()
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public Class<?> parameterType(int idx)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public int parameterCount()
+  {
+    return ptypes.length;
+  }
+
+  public Class<?> returnType()
+  {
+    return rtype;
+  }
+
+  public List<Class<?>> parameterList()
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public Class<?>[] parameterArray()
+  {
+    return ptypes;
+  }
+
+  public boolean equals(Object object)
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public int hashCode()
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public String toString()
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public static MethodType fromMethodDescriptorString(String descriptor, ClassLoader loader) throws IllegalArgumentException, TypeNotPresentException
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  public String toMethodDescriptorString()
+  {
+    throw new UnsupportedOperationException();
+  }
+
+  private final Class<?> rtype;
+  private final Class<?>[] ptypes;
+
+  private static final long serialVersionUID = -1L;
+}