Dictionary.java

package com.example.words;

import java.io.*;
import java.util.HashSet;

public class Dictionary {

    HashSet<String> hashSet = new HashSet<String>();

    public Dictionary(InputStream is) {
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        String line1;
        int numWords = 0;
        try {
            do {
                line1 = br.readLine();
                hashSet.add(line1);
                numWords++;
            } while(line1 != null);
        } catch(IOException exn) {
            line1 = "ERROR!";
        }
    }

    public static void testWord(Dictionary d, String word) {
        System.out.println(word + ": " + d.hashSet.contains(word));
    }

    public static void main(String[] args) throws FileNotFoundException {
        System.out.println("Hello.");
        Dictionary d = new Dictionary(new FileInputStream("/usr/share/dict/words"));
        testWord(d, "elephant");
        testWord(d, "anvil");
        testWord(d, "koala");
        testWord(d, "aroceuhalcue");
        testWord(d, "junkkkk");
        testWord(d, "helllllllllllllllllllllllllo");

        System.out.println(d.hashSet.size() + "words");
    }
}

MyActivity.java

package com.example.words;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

public class MyActivity extends Activity {
    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        TextView helloText = (TextView) findViewById(R.id.helloText);
        helloText.setText("Hello from Java.");
        InputStream is = getResources().openRawResource(R.raw.words);
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        String line1;
        int numWords = 0;
        try {
            do {
                line1 = br.readLine();
                numWords++;
            } while(line1 != null);
        } catch(IOException exn) {
            line1 = "ERROR!";
        }
        helloText.setText("Word count is: " + numWords);
    }
}