Please help, I got error like this "Exception in thread "main" java.lang.OutOfMemoryError: Java heap space"

package com.teamtreehouse;

import java.util.Arrays;
import java.util.List;

public class Main {

    public static void main(String[] args) {
    // write your code here
        // TODO:csd - Instantiate a new Prompter object and prompt for the story template
        Prompter prompter = new Prompter();
        String story = "Thanks __name__ for helping me out.  You are really a __adjective__ __noun__ and I owe you a __noun__.";
        Template tmpl = new Template(story);
        // TODO:csd - Use the prompter object to have it do the prompting, censoring and outputting.  Call Prompter.run
        prompter.run(tmpl);
        /*List<String> fakeResults = Arrays.asList(
                "friend",
                "talented",
                "java programmer",
                "high five");*/
        // TODO:csd - This should really happen in the Prompter.run method, let's get these implemetation details out of the main method
        /*String results = tmpl.render(fakeResults);
        System.out.printf("Your TreeStory:%n%n%s", results);*/

    }
}

package com.teamtreehouse;

import java.io.*;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;


public class Prompter {
    private BufferedReader mReader;
    private Set<String> mCensoredWords;

    public Prompter() {
        mReader = new BufferedReader(new InputStreamReader(System.in));
        loadCensoredWords();
    }

    private void loadCensoredWords() {
        mCensoredWords = new HashSet<String>();
        Path file = Paths.get("resources", "censored_words.txt");
        List<String> words = null;
        try {
            words = Files.readAllLines(file);
        } catch (IOException e) {
            System.out.println("Couldn't load censored words");
            e.printStackTrace();
        }
        mCensoredWords.addAll(words);
    }

    public void run(Template tmpl) {
        List<String> results = null;
        try {
            results = promptForWords(tmpl);
        } catch (IOException e) {
            System.out.println("There was a problem prompting for words");
            e.printStackTrace();
            System.exit(0);
        }
        // TODO:csd - Print out the results that were gathered here by rendering the template
        System.out.println(tmpl.render(results));
    }

    /**
     * Prompts user for each of the blanks
     *
     * @param tmpl The compiled template
     * @return
     * @throws IOException
     */
    public List<String> promptForWords(Template tmpl) throws IOException {
        List<String> words = new ArrayList<String>();
        for (String phrase : tmpl.getPlaceHolders()) {
            String word = promptForWord(phrase);
            words.add(word);
        }
        return words;
    }


    /**
     * Prompts the user for the answer to the fill in the blank.  Value is guaranteed to be not in the censored words list.
     *
     * @param phrase The word that the user should be prompted.  eg: adjective, proper noun, name
     * @return What the user responded
     */
    public String promptForWord(String phrase) throws IOException {
        // TODO:csd - Prompt the user for the response to the phrase, make sure the word is censored, loop until you get a good response.
        String userInput;
        System.out.printf("Please input a %s: %n", phrase);
        userInput = mReader.readLine();

        while(userInput == null || (mCensoredWords.contains(userInput))){
            System.out.printf("Please input a NICE %s: %n", phrase);
            userInput = mReader.readLine();
        }
        return userInput.trim();
    }
}

package com.teamtreehouse;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;


public class Template {
    /**
     * The string format that is waiting to receive values
     */
    private String mCompiled;
    private List<String> mPlaceholders;

    /**
     * @param text A template with double underscored surrounded placeholders. eg: Hello __name__!
     */
    public Template(String text) {
        // Match on double underscore surrounded words, like __name__ or __proper noun__
        Pattern pattern = Pattern.compile("__([^__]+)__");
        Matcher matcher = pattern.matcher(text);
        mPlaceholders = new ArrayList<String>();
        while (matcher.find()) {
            String label = matcher.group(1);
            mPlaceholders.add(label);
        }
        mCompiled = matcher.replaceAll("%s");
    }


    /**
     * @return Ordered names of placeholders in the template
     */
    public List<String> getPlaceHolders() {
        return mPlaceholders;
    }


    /**
     * Given a list of values, replaces the fill in the blanks in order.
     *
     * @param values The replacements for the fill in the blank
     * @return The filled out TreeStory
     */
    public String render(List<String> values) {
        // String.format accepts the templates and Object... (a variable amount of objects)
        return String.format(mCompiled, values.toArray());
    }
}