Array "Größe" anpassen

[marc_book]

Hallo Leute,
ich versuche schon seit mehreren Stunden die Größe eines Array (arrListe) der Zeilenanzahl einer Textdatei anzupassen.:bahnhof:
Das Programm geht solange, wie ich dies weg lasse.
Wenn ich die while-Schleife drin lasse kommt folgender Fehler:

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at Distance.distance(Distance.java:33)
at Distance.round(Distance.java:17)
at Gui$ButtonHaendler.actionPerformed(Gui.java:150)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

public class Reader {
	
	static int arrayWeapon;
	static int arrayAmmunition;
	static int arrayCharge;
	
	public static void Reader() throws IOException{
		
		String[][] arrListe = new String[13][13];
		int i = 0;
		
		String[][][] rangeTables = new String[10][4][8];
//		rangeTables[0][0][0] = "E:\\Java\\m119he1.txt";
		rangeTables = RangeTabels.getRange();
		System.out.println(rangeTables[0][0][0]);
		//Array Übergabe aus RangeTables fehlt noch
		
		try {
			BufferedReader in = new BufferedReader(new FileReader(rangeTables[arrayWeapon][arrayAmmunition][arrayCharge]));
			String zeile = null;
			boolean eof = false;
			int count = 0;
			String[] a = new String[40];
			StringBuilder fileText = new StringBuilder();
			int count2 = 0;
			int counterArray = 1;
			boolean counter = false;
			String line = null;
			
			while(!counter){ //wenn ich das hier weg lasse geht es.
				line = in.readLine();
				if(line == null){
					System.out.println("counter = true");
					counter = true;
				}else{
					System.out.println("Test: " + counterArray);
					counterArray++;
				}
			} //Ende

			while(!eof){
				zeile = in.readLine();
				if(zeile == null){
					eof = true;
				}else{

					fileText.append(zeile + "\n");
					StringTokenizer tokenizer = new StringTokenizer(zeile, ":");
					int size = tokenizer.countTokens();
					String[] array = new String[18];
					int index = 0;
					
					a[count] = zeile;
					
					while(index < size){
						array[index++] = tokenizer.nextToken();
						arrListe[count2] = array;
						count++;
					}
					count2++;
				}
			}
				in.close();
			} catch (IOException e1) {
				e1.printStackTrace();
			}
		Distance.getTextFile(arrListe);
	}
	public static void range(int weapon, int ammunition, int charge){
		System.out.println("Waffe: " + weapon + " Munition: " + ammunition + " Charge: " + charge);
		arrayWeapon = weapon;
		arrayAmmunition = ammunition;
		arrayCharge = charge;
	}
}

Vielen Dank schon mal.

 

[Ruzmanz]

In der ersten Schleife gehst du mit in.readLine(); deine komplette Datei durch. Die ist dann am Ende. Wenn du zur nächsten Schleife kommst, ist eigentlich schon EOF erreicht. Du gehst da aber trotzdem rein und rufst nochmal in.readLine() auf.

PS: Vielleicht solltest du einfach eine "ArrayList" benutzen.

 

[marc_book]

Vielen Dank für die schnelle Hilfe.
Werde es gleich mal ausprobieren.