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+/**
+ * Copyright (c) 2003-2004, www.pdfbox.org
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of pdfbox; nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://www.pdfbox.org
+ *
+ */
+package org.pdfbox.examples.fdf;
+
+import java.io.IOException;
+
+import org.pdfbox.pdmodel.interactive.form.PDAcroForm;
+import org.pdfbox.pdmodel.interactive.form.PDField;
+
+import org.pdfbox.pdmodel.PDDocument;
+import org.pdfbox.pdmodel.PDDocumentCatalog;
+
+import org.pdfbox.exceptions.COSVisitorException;
+
+import org.pdfbox.examples.AbstractExample;
+
+/**
+ * This example will take a PDF document and set a FDF field in it.
+ *
+ * @author  Ben Litchfield (ben@csh.rit.edu)
+ * @version $Revision: 1.6 $
+ */
+public class SetField extends AbstractExample
+{
+
+    /**
+     * This will set a single field in the document.
+     *
+     * @param pdfDocument The PDF to set the field in.
+     * @param name The name of the field to set.
+     * @param value The new value of the field.
+     *
+     * @throws IOException If there is an error setting the field.
+     */
+    public void setField( PDDocument pdfDocument, String name, String value ) throws IOException
+    {
+        PDDocumentCatalog docCatalog = pdfDocument.getDocumentCatalog();
+        PDAcroForm acroForm = docCatalog.getAcroForm();
+        PDField field = acroForm.getField( name );
+        if( field != null )
+        {
+            field.setValue( value );
+        }
+        else
+        {
+            System.err.println( "No field found with name:" + name );
+        }
+
+    }
+
+    /**
+     * This will read a PDF file and set a field and then write it the pdf out again.
+     * <br />
+     * see usage() for commandline
+     *
+     * @param args command line arguments
+     *
+     * @throws IOException If there is an error importing the FDF document.
+     * @throws COSVisitorException If there is an error writing the PDF.
+     */
+    public static void main(String[] args) throws IOException, COSVisitorException
+    {
+        SetField setter = new SetField();
+        setter.setField( args );
+    }
+
+    private void setField( String[] args ) throws IOException, COSVisitorException
+    {
+        PDDocument pdf = null;
+        try
+        {
+            if( args.length != 3 )
+            {
+                usage();
+            }
+            else
+            {
+                SetField example = new SetField();
+
+                pdf = PDDocument.load( args[0] );
+                example.setField( pdf, args[1], args[2] );
+                pdf.save( args[0] );
+            }
+        }
+        finally
+        {
+            if( pdf != null )
+            {
+                pdf.close();
+            }
+        }
+    }
+    /**
+     * This will print out a message telling how to use this example.
+     */
+    private static void usage()
+    {
+        System.err.println( "usage: org.pdfbox.examples.fdf.SetField <pdf-file> <field-name> <field-value>" );
+    }
+}
+\ No newline at end of file