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diff --git a/libjava/java/awt/image/renderable/ParameterBlock.java b/libjava/java/awt/image/renderable/ParameterBlock.java
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+/* ParameterBlock.java -- 
+   Copyright (C) 2002 Free Software Foundation, Inc.
+
+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., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 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.awt.image.renderable;
+
+import java.awt.image.RenderedImage;
+import java.io.Serializable;
+import java.util.Vector;
+
+public class ParameterBlock implements Cloneable, Serializable
+{
+  private static final long serialVersionUID = -7577115551785240750L;
+  protected Vector sources;
+  protected Vector parameters;
+
+  public ParameterBlock()
+  {
+    this(new Vector(), new Vector());
+  }
+
+  public ParameterBlock(Vector sources)
+  {
+    this(sources, new Vector());
+  }
+
+  public ParameterBlock(Vector sources, Vector parameters)
+  {
+    this.sources = sources;
+    this.parameters = parameters;
+  }
+
+  public Object shallowClone()
+  {
+    try
+      {
+        return super.clone();
+      }
+    catch (CloneNotSupportedException e)
+      {
+        throw (Error) new InternalError().initCause(e); // impossible
+      }
+  }
+
+  public Object clone()
+  {
+    ParameterBlock pb = (ParameterBlock) shallowClone();
+    if (sources != null)
+      pb.sources = (Vector) sources.clone();
+    if (parameters != null)
+      pb.parameters = (Vector) parameters.clone();
+    return pb;
+  }
+
+  public ParameterBlock addSource(Object source)
+  {
+    sources.add(source);
+    return this;
+  }
+
+  public Object getSource(int index)
+  {
+    return sources.get(index);
+  }
+
+  public ParameterBlock setSource(Object source, int index)
+  {
+    sources.ensureCapacity(index);
+    sources.set(index, source);
+    return this;
+  }
+
+  public RenderedImage getRenderedSource(int index)
+  {
+    return (RenderedImage) sources.get(index);
+  }
+
+  public RenderableImage getRenderableSource(int index)
+  {
+    return (RenderableImage) sources.get(index);
+  }
+
+  public int getNumSources()
+  {
+    return sources.size();
+  }
+
+  public Vector getSources()
+  {
+    return sources;
+  }
+
+  public void setSources(Vector sources)
+  {
+    this.sources = sources;
+  }
+
+  public void removeSources()
+  {
+    if (sources != null)
+      sources.clear();
+  }
+
+  public int getNumParameters()
+  {
+    return parameters.size();
+  }
+
+  public Vector getParameters()
+  {
+    return parameters;
+  }
+
+  public void setParameters(Vector parameters)
+  {
+    this.parameters = parameters;
+  }
+
+  public void removeParameters()
+  {
+    if (parameters != null)
+      parameters.clear();
+  }
+
+  public ParameterBlock add(Object o)
+  {
+    parameters.add(o);
+    return this;
+  }
+
+  public ParameterBlock add(byte b)
+  {
+    return add(new Byte(b));
+  }
+
+  public ParameterBlock add(char c)
+  {
+    return add(new Character(c));
+  }
+
+  public ParameterBlock add(short s)
+  {
+    return add(new Short(s));
+  }
+
+  public ParameterBlock add(int i)
+  {
+    return add(new Integer(i));
+  }
+
+  public ParameterBlock add(long l)
+  {
+    return add(new Long(l));
+  }
+
+  public ParameterBlock add(float f)
+  {
+    return add(new Float(f));
+  }
+
+  public ParameterBlock add(double d)
+  {
+    return add(new Double(d));
+  }
+
+  public ParameterBlock set(Object o, int index)
+  {
+    parameters.ensureCapacity(index);
+    parameters.set(index, o);
+    return this;
+  }
+
+  public ParameterBlock set(byte b, int index)
+  {
+    return set(new Byte(b), index);
+  }
+
+  public ParameterBlock set(char c, int index)
+  {
+    return set(new Character(c), index);
+  }
+
+  public ParameterBlock set(short s, int index)
+  {
+    return set(new Short(s), index);
+  }
+
+  public ParameterBlock set(int i, int index)
+  {
+    return set(new Integer(i), index);
+  }
+
+  public ParameterBlock set(long l, int index)
+  {
+    return set(new Long(l), index);
+  }
+
+  public ParameterBlock set(float f, int index)
+  {
+    return set(new Float(f), index);
+  }
+
+  public ParameterBlock set(double d, int index)
+  {
+    return set(new Double(d), index);
+  }
+
+  public Object getObjectParameter(int index)
+  {
+    return parameters.get(index);
+  }
+
+  public byte getByteParameter(int index)
+  {
+    return ((Byte) parameters.get(index)).byteValue();
+  }
+
+  public char getCharParameter(int index)
+  {
+    return ((Character) parameters.get(index)).charValue();
+  }
+
+  public short getShortParameter(int index)
+  {
+    return ((Short) parameters.get(index)).shortValue();
+  }
+
+  public int getIntParameter(int index)
+  {
+    return ((Integer) parameters.get(index)).intValue();
+  }
+
+  public long getLongParameter(int index)
+  {
+    return ((Long) parameters.get(index)).longValue();
+  }
+
+  public float getFloatParameter(int index)
+  {
+    return ((Float) parameters.get(index)).floatValue();
+  }
+
+  public double getDoubleParameter(int index)
+  {
+    return ((Double) parameters.get(index)).doubleValue();
+  }
+
+  public Class[] getParamClasses()
+  {
+    int i = parameters.size();
+    Class[] result = new Class[i];
+    while (--i >= 0)
+      {
+        Class c = parameters.get(i).getClass();
+        if (c == Byte.class)
+          result[i] = byte.class;
+        else if (c == Character.class)
+          result[i] = char.class;
+        else if (c == Short.class)
+          result[i] = short.class;
+        else if (c == Integer.class)
+          result[i] = int.class;
+        else if (c == Long.class)
+          result[i] = long.class;
+        else if (c == Float.class)
+          result[i] = float.class;
+        else if (c == Double.class)
+          result[i] = double.class;
+        else
+          result[i] = c;
+      }
+    return result;
+  }
+} // class ParameterBlock