Java tutorial
//package com.java2s; //License from project: Open Source License import java.io.InputStream; import java.util.Arrays; import java.util.HashMap; import java.util.LinkedList; import java.util.List; import java.util.Map; import java.util.Scanner; import android.content.Context; import android.content.res.AssetManager; public class Main { private static final String DICTIONARY_FILENAME = "words.txt"; public static Map<String, List<String>> createDictionary(Context context) { try { AssetManager am = context.getAssets(); InputStream is = am.open(DICTIONARY_FILENAME); Scanner reader = new Scanner(is); Map<String, List<String>> map = new HashMap<String, List<String>>(); while (reader.hasNextLine()) { String word = reader.nextLine(); char[] keyArr = word.toCharArray(); Arrays.sort(keyArr); String key = String.copyValueOf(keyArr); List<String> wordList = map.get(key); if (wordList == null) { wordList = new LinkedList<String>(); } wordList.add(word); map.put(key, wordList); } reader.close(); return map; } catch (Exception e) { System.out.println(e.getMessage()); e.printStackTrace(); } return null; } }