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POLoad/Store Objects in file in Java
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  1. POLoad/Store Objects in file in Java
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    copied!<p>I want to store an object from my class in file, and after that to be able to load the object from this file. But somewhere I am making a mistake(s) and cannot figure out where. May I receive some help?</p> <pre><code>public class GameManagerSystem implements GameManager, Serializable { private static final long serialVersionUID = -5966618586666474164L; HashMap&lt;Game, GameStatus&gt; games; HashMap&lt;Ticket, ArrayList&lt;Object&gt;&gt; baggage; HashSet&lt;Ticket&gt; bookedTickets; Place place; public GameManagerSystem(Place place) { super(); this.games = new HashMap&lt;Game, GameStatus&gt;(); this.baggage = new HashMap&lt;Ticket, ArrayList&lt;Object&gt;&gt;(); this.bookedTickets = new HashSet&lt;Ticket&gt;(); this.place = place; } public static GameManager createManagerSystem(Game at) { return new GameManagerSystem(at); } public boolean store(File f) { try { FileOutputStream fos = new FileOutputStream(f); ObjectOutputStream oos = new ObjectOutputStream(fos); oos.writeObject(games); oos.writeObject(bookedTickets); oos.writeObject(baggage); oos.close(); fos.close(); } catch (IOException ex) { return false; } return true; } public boolean load(File f) { try { FileInputStream fis = new FileInputStream(f); ObjectInputStream ois = new ObjectInputStream(fis); this.games = (HashMap&lt;Game,GameStatus&gt;)ois.readObject(); this.bookedTickets = (HashSet&lt;Ticket&gt;)ois.readObject(); this.baggage = (HashMap&lt;Ticket,ArrayList&lt;Object&gt;&gt;)ois.readObject(); ois.close(); fis.close(); } catch (IOException e) { return false; } catch (ClassNotFoundException e) { return false; } return true; } . . . } public class JUnitDemo { GameManager manager; @Before public void setUp() { manager = GameManagerSystem.createManagerSystem(Place.ENG); } @Test public void testStore() { Game g = new Game(new Date(), Teams.LIONS, Teams.SHARKS); manager.registerGame(g); File file = new File("file.ser"); assertTrue(airport.store(file)); } } </code></pre>
 

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