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POArrayList from txt file trouble
 

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  1. POArrayList from txt file trouble
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    <p>4 Classes: </p> <ol> <li><code>Party</code> - index, a name, a location, and list of a number of creatures (accessed by links to instances of the Creature class).</li> <li><code>Creature</code> - index, a type, a name, party by index, empathy value, fear value, list of treasures, list of artifacts</li> <li><code>Treasure</code> - index, type, creature by index, weight, value</li> <li><code>Artifact</code> - index, type, creature by index, other fields</li> </ol> <p>Use the ArrayList class to hold instances of the classes above.</p> <p>test data (looks something like): </p> <pre><code>p : 10003 : Conglomeration c : 20001 : Woman : Lucy :10001 : 17 : 22 : 20 t : 30004 : Silver : 20005 : 120 : 1000 a : 40001 : Wand : 20007 : ElderWand </code></pre> <p>This is what I've written so far: </p> <pre><code>import java.io.IOException; import java.util.*; import javax.swing.JFileChooser; import java.util.Scanner; public class SorcerersCave { public static void main(String[] args) { ArrayList&lt;Party&gt; partyList = new ArrayList&lt;Party&gt;(); ArrayList&lt;Creature&gt; creatureList = new ArrayList&lt;Creature&gt;(); ArrayList&lt;Treasure&gt; treasureList = new ArrayList&lt;Treasure&gt;(); ArrayList&lt;Artifact&gt; artifactList = new ArrayList&lt;Artifact&gt;(); // open and read file: try { Scanner scanner = new Scanner(chooser.getSelectedFile()) .useDelimiter("\\s*:\\s*"); while (scanner.hasNextLine()) { String line = scanner.nextLine(); int index; String type; String name; char identifier = line.charAt(0); if (identifier == 'p') { index = scanner.nextInt(); name = scanner.next(); partyList.add(new Party(partyInfo(index, name))); } else if (identifier == 'c') { index = scanner.nextInt(); type = scanner.next(); name = scanner.next(); int partyC = scanner.nextInt(); int empathyC = scanner.nextInt(); double carryingCapacityC = scanner.nextDouble(); creatureList.add(new Creature(creatureInfo(index, type, name, partyC, empathyC, carryingCapacityC))); } else if (identifier == 't') { index = scanner.nextInt(); type = scanner.next(); int creatureT = scanner.nextInt(); double weightT = scanner.nextDouble(); int valueT = scanner.nextInt(); treasureList.add(new Treasure(treasureInfo(index, type, creatureT, weightT, valueT))); } else if (identifier == 'a') { index = scanner.nextInt(); type = scanner.next(); int creatureA = scanner.nextInt(); artifactList.add(new Artifact(artifactInfo(index, type, creatureA))); } else { System.out.println("This is not a valid line of input"); } System.out.println("Identifier: " + identifier); } } catch (IOException e) { e.printStackTrace(); } System.out.println("party: " + partyList.toString()); } } private class Creature { public Creature (int index, String type, String name, int partyC, int empathyC, double carryingCapacityC) { return; } } private class Party { public Party(int index, String name) { return; } } private class Artifact { public Artifact(int index, String type, int creatureA) { return; } } private class Treasure { public Treasure(int index, String type, int creatureT, double weightT, int valueT) { return ; } } </code></pre> <p>I know I already have issues because when I try to print the contents of the partyList array. It's empty. I just can't seem to figure out why.</p> <p>Errors present: </p> <pre><code>Exception in thread "main" java.util.InputMismatchException at java.util.Scanner.throwFor(Unknown Source) at java.util.Scanner.next(Unknown Source) at java.util.Scanner.nextInt(Unknown Source) at java.util.Scanner.nextInt(Unknown Source) at SorcerersCave.main(SorcerersCave.java:43) </code></pre> <p>Idea** Is it possible for me to have the if-else loop and 'look to' corresponding class to see what to scan (instead of doing it all in the loop)? For example: if the first letter is a 'p' go to the party class to see what to do with the line.</p>
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    1. UStommy1370
    1. UStommy1370
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      1. This table or related slice is empty.
      1. VTUpMod
    1. COPlease remove all the GUI stuff and post only the code related to parsing your input.
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      1. This table or related slice is empty.
    2. COAnd the steps you've used so far to diagnose the problem?
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      1. USJon Skeet
    3. COI'd also recommend that you put your static data in an XML file because its starting to get kinda lengthy and detailed.
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      1. USL7ColWinters
 

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