diff --git a/pmd/src/net/sourceforge/pmd/CPD.java b/pmd/src/net/sourceforge/pmd/CPD.java
deleted file mode 100644
index 76a5f97dc5..0000000000
--- a/pmd/src/net/sourceforge/pmd/CPD.java
+++ /dev/null
@@ -1,225 +0,0 @@
-/*
- * User: tom
- * Date: Jul 26, 2002
- * Time: 8:43:19 PM
- */
-package net.sourceforge.pmd;
-
-import java.io.File;
-import java.io.IOException;
-import java.io.FileReader;
-import java.io.FilenameFilter;
-import java.util.*;
-
-// this class will go away as soon
-// as this spike is over
-// i didn't want to create a new directory though
-// since i'm not sure if this will work out
-
-public class CPD {
-
-    public static class JavaFileOrDirectoryFilter implements FilenameFilter {
-      public boolean accept(File dir, String filename) {
-          return filename.endsWith("java") || (new File(dir.getAbsolutePath() + System.getProperty("file.separator") + filename).isDirectory());
-      }
-    }
-
-    public static class TokenPtr {
-
-        private int location;
-        private File file;
-        private StringBuffer fileContents;
-
-        public TokenPtr(File file, StringBuffer fileContents, int location) {
-            this.file = file;
-            this.location = location;
-            this.fileContents = fileContents;
-        }
-
-        public boolean nextTokenAvailable(int imageLength) {
-            return (location+imageLength+1) < fileContents.length();
-        }
-
-        public String getNextCharacter(int imageLength) {
-            return String.valueOf(fileContents.charAt(location + imageLength));
-        }
-
-    }
-
-    public static class TokenTable {
-
-        // String->List (TokenPtr, TokenPtr, TokenPtr)
-        private Map tokens = new HashMap();
-        private int minimumTokenSize;
-        private Set tokensFound = new HashSet();
-
-        private boolean stopAnyway = false;
-        private int lastTokenCount;
-
-        public TokenTable(int minimumTokenSize) {
-            this.minimumTokenSize = minimumTokenSize;
-        }
-
-        public void add(File file, StringBuffer code) {
-            for (int i=0; i<code.length(); i++) {
-                String image = String.valueOf(code.charAt(i));
-                TokenPtr thisToken = new TokenPtr(file, code, i);
-                if (tokens.containsKey(image)) {
-                    List tokenPtrs = (List)tokens.get(image);
-                    tokenPtrs.add(thisToken);
-                } else {
-                    List tokenPtrs = new ArrayList();
-                    tokenPtrs.add(thisToken);
-                    tokens.put(image, tokenPtrs);
-                }
-            }
-        }
-
-        public void frobnicate() {
-            while (!tokens.isEmpty() && !stopAnyway) {
-                deleteSoloTokens();
-                combineTokens();
-            }
-        }
-
-        private void combineTokens() {
-            System.out.println("tokens.size() = " + tokens.size());
-            Map newTokenPtrs = new HashMap();
-            for (Iterator i=tokens.keySet().iterator(); i.hasNext();) {
-                String image = (String)i.next();
-                List tokenPtrs = (List)tokens.get(image);
-                for (Iterator j = tokenPtrs.iterator(); j.hasNext();) {
-                    TokenPtr tokenPtr = (TokenPtr)j.next();
-                    if (tokenPtr.nextTokenAvailable(image.length())) {
-                        String newImage = image + tokenPtr.getNextCharacter(image.length());
-                        if (newTokenPtrs.containsKey(newImage)) {
-                            List list = (List)newTokenPtrs.get(newImage);
-                            list.add(tokenPtr);
-                        } else {
-                            List list = new ArrayList();
-                            list.add(tokenPtr);
-                            newTokenPtrs.put(newImage, list);
-                        }
-                        if (newImage.length() > minimumTokenSize) {
-                            List list = (List)newTokenPtrs.get(newImage);
-                            if (list.size() > 1) {
-                                tokensFound.add(newImage);
-                            }
-                        }
-                    }
-                }
-
-
-            }
-            tokens = newTokenPtrs;
-
-            // there must be a better way to halt
-            if (lastTokenCount == tokens.size()) {
-                stopAnyway = true;
-            }
-            lastTokenCount = tokens.size();
-        }
-
-        private void deleteSoloTokens() {
-            for (Iterator i=tokens.keySet().iterator(); i.hasNext();) {
-                String image = (String)i.next();
-                List tokenPtrs = (List)tokens.get(image);
-                if (tokenPtrs.size() == 1) {
-                    i.remove();
-                }
-            }
-        }
-
-        public int getTokenCount() {
-            return tokens.size();
-        }
-
-        public Set getTokensFound() {
-            return this.tokensFound;
-        }
-    }
-
-    private Map files = new HashMap();
-    private TokenTable tokenTable;
-
-    public CPD(int minimumFragmentSize) {
-        tokenTable = new TokenTable(minimumFragmentSize);
-    }
-
-    public void addFile(File file) {
-        files.put(file, null);
-    }
-
-    public void addFiles(List newFiles) {
-        System.out.println("Adding " + newFiles.size() + " files");
-        for (Iterator i = newFiles.iterator(); i.hasNext();) {
-            files.put(i.next(), null);
-        }
-    }
-
-    public void loadFiles() throws IOException {
-        for (Iterator i = files.keySet().iterator(); i.hasNext();) {
-            File file = (File)i.next();
-            files.put(file, load(file));
-        }
-    }
-
-    public void buildTokenTable() {
-        for (Iterator i = files.keySet().iterator(); i.hasNext();) {
-            File file = (File)i.next();
-            StringBuffer contents = (StringBuffer)files.get(file);
-            tokenTable.add(file, contents);
-        }
-    }
-
-    public void frobnicate() {
-        tokenTable.frobnicate();
-        for (Iterator i = tokenTable.getTokensFound().iterator(); i.hasNext();) {
-            System.out.println(i.next());
-
-        }
-    }
-
-    private StringBuffer load(File file) throws IOException {
-        FileReader fr = new FileReader(file);
-        StringBuffer sb = new StringBuffer();
-        int c = 0;
-        while ((c = fr.read()) != -1) {
-            sb.append((char)c);
-        }
-        fr.close();
-        return sb;
-    }
-
-    public static void main(String[] args) {
-        CPD cpd = new CPD(15);
-        cpd.addFiles(findFilesRecursively("C:\\data\\pmd\\pmd\\test-data\\"));
-        try {
-            cpd.loadFiles();
-        } catch (IOException ioe) {
-            ioe.printStackTrace();
-            return;
-        }
-        cpd.buildTokenTable();
-        cpd.frobnicate();
-    }
-    private static List findFilesRecursively(String dir) {
-     File root = new File(dir);
-     List list = new ArrayList();
-     scanDirectory(root, list, true);
-     return list;
-   }
-
-   private static void scanDirectory(File dir, List list, boolean recurse) {
-     FilenameFilter filter = new JavaFileOrDirectoryFilter();
-     String[] possibles = dir.list(filter);
-     for (int i=0; i<possibles.length; i++) {
-        File tmp = new File(dir + System.getProperty("file.separator") + possibles[i]);
-        if (recurse && tmp.isDirectory()) {
-           scanDirectory(tmp, list, true);
-        } else {
-           list.add(new File(dir + System.getProperty("file.separator") + possibles[i]));
-        }
-     }
-   }
-}