A simplified keyword counter for Python scripts, written in Java

KeywordCounter.java

package com.example;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

public class KeywordCounter {
	
    static final String PATH = "/path/to/python/scripts";
    static final Set<String> KEYWORDS = new HashSet<String>();	
    static {
        KEYWORDS.add("and");
        KEYWORDS.add("as");
        KEYWORDS.add("assert");
        KEYWORDS.add("break");
        KEYWORDS.add("class");
        KEYWORDS.add("continue");
        KEYWORDS.add("def");
        KEYWORDS.add("del");
        KEYWORDS.add("elif");
        KEYWORDS.add("else");
        KEYWORDS.add("except");
        KEYWORDS.add("exec");
        KEYWORDS.add("finally");
        KEYWORDS.add("for");
        KEYWORDS.add("from");
        KEYWORDS.add("global");
        KEYWORDS.add("if");
        KEYWORDS.add("import");
        KEYWORDS.add("in");
        KEYWORDS.add("is");
        KEYWORDS.add("lambda");
        KEYWORDS.add("not");
        KEYWORDS.add("or");
        KEYWORDS.add("pass");
        KEYWORDS.add("print");
        KEYWORDS.add("raise");
        KEYWORDS.add("return");
        KEYWORDS.add("try");
        KEYWORDS.add("while");
        KEYWORDS.add("with");
        KEYWORDS.add("yield");
    }
	
    public static void main(String[] args) throws Exception {
        File scriptDirectory = new File(PATH);
        String[] scriptNames = scriptDirectory.list(new FilenameFilter() {
            public boolean accept(File dir, String name) {
                return name.endsWith(".py");
            }
        });
        // collect results
        Map<Script, Integer> result = new HashMap<Script, Integer>();
        for (String name : scriptNames) {
            Script script = new Script(PATH + File.separator + name);
            result.put(script, script.countKeywords());
        }
        // print results
        for (Map.Entry<Script, Integer> script : result.entrySet())
            System.out.printf("%s uses %d reserved words\n",
                              script.getKey().getName(),
                              script.getValue());
    }
	
}

class Script {
	
    private File script;
	
    public Script(String name) {
        script = new File(name);
    }
	
    public int countKeywords() throws IOException {
        int nk = 0;
        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new FileReader(script));
            String line = "";
            while ((line = reader.readLine()) != null)
                for (String token : line.split("\\s+"))
                    if (KeywordCounter.KEYWORDS.contains(token.split(":")[0]))
                        nk++;
        } finally {
            if (reader != null)
                reader.close();
        }
        return nk;
    }
	
    public String getName() {
        return script.getName();
    }
	
}