ArrayList funktioniert nicht mit Dateieingabe

Question

Ich habe dieses Programm ohne die Eingabe von Dateien arbeiten, habe ich viel googeln und fragen, aber kann es nicht herausfinden. Ich musste firstnames und secondnames zu einer ArrayList ändern, irgendwelche Ideen, wie man das repariert? Es funktioniert auch mit allen Eingaben von Dateien auskommentiert.

package com.gamenamegenerator; 

import java.awt.Color; 
import java.awt.Font; 
import java.io.File; 
import java.io.FileNotFoundException; 
import java.io.FileWriter; 
import java.io.IOException; 
import java.io.PrintWriter; 
import java.util.ArrayList; 
import java.util.Collection; 
import java.util.Random; 
import java.util.Scanner; 

import javax.swing.JFrame; 
import javax.swing.JLabel; 
import javax.swing.SwingConstants; 

public class GameNameGenerator{ 

    public static void main(String[] args) throws InterruptedException, IOException{  
     JFrame frame = new JFrame("Game Name Generator"); 
     frame.setSize(1400, 1200); 
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     frame.getContentPane().setBackground(Color.black); 
     JLabel label = new JLabel(); 
     label.setFont(new Font("SansSerif", Font.BOLD, 75)); 
     label.setForeground(Color.BLUE); 
     frame.setLocationRelativeTo(null); 
     frame.setResizable(true); 
     frame.setVisible(true); 
     ArrayList<String> firstnames = new ArrayList<String>(); 
     ArrayList<String> secondnames = new ArrayList<String>(); 
     String[] firstnameslist = new String[] {"Healthy", "Closed", "Open", "Central", "Remorseful", "Sideways", "Diving", "Trackable", "Wary", "Determined", "Contested", "Continuous", "Hungry", "Limited", "Accredited", "Junky", "Hilarious", "Real", "Stiff", "Agile", "Solid", "Knowing", "Expectant", "Heavy", "Dense", "Unexpectant", "Insolent", "Accurate", "Sufferable", "Painful", "Wise", "Knowledgeable", "Growing", "Confused", "Careful", "Untrusting", "Untrustworthy", "Trusting", "Trustworthy", "Laughing", "Sick", "Hasty", "Reluctant", "Barbaric", "Desperate", "Returning", "Mechanical", "Pondering", "Thoughtful", "Dark", "Positive", "Hated", "Spiteful", "Hateful", "Shimmering", "Assumptive", "Brainy", "Battling", "Commercial", "Bankrupt", "Back Firing", "Babysitting", "Pampered", "Pocket", "Adaptive", "Wet", "Automatic", "Shaky", "Sorrowful", "Experienced", "Inexperienced", "Smooth", "Youthful", "Technological", "Advanced", "Minor", "Hungry", "Misguided", "Feverish", "Drunk", "Dependent", "Burnt", "Humiliated", "Bossy", "Peaceful", "Official", "Junior", "Logical", "Absent", "Curious", "Sharp", "Black", "Broad", "Flabby", "Runny", "Cold Hearted", "Cold", "Fiery", "Speeding", "Flying", "Awoken", "Camoflaged", "Iron", "Golden", "Watchful", "Guarding", "Avenging", "Displaced", "Broken", "Mismatched", "Glistening", "Turbulent", "Difficult", "Approving", "Floating", "Aquatic", "Energetic", "Vibrant", "Animated", "Metallic", "Streamlined", "Cracked", "Aerobatic", "Flimsy", "Absurd", "Dozing", "Dopy", "Pointy", "Paranormal", "Angry", "Slurping", "Gasping", "Oblivious", "Babbling", "Steroid Taking", "Steroids", "Mutated", "Chubby", "Uncooperative", "Smelly", "Inhuman", "Accidental", "Freak", "Scientific", "Combative", "Inaccessible", "Abusive", "Extraterrestrial", "Extravagant", "Undeniably", "Combat", "Enormous", "Giant", "Overrated", "Undeniable", "Secretive", "Comprehensive", "Legendary", "Treacherous", "Deceptive", "Lying", "Hairy", "Loony", "Skinny", "Scrawny", "Genetically Modified", "Modified", "Super", "Arrogant", "Mysterious", "Sneaky", "Deadly", "Fatal", "Dangerous", "Breezy", "Superior", "Flabbergasted", "Mouldy", "Molten", "Squishy", "Moist", "Mushy", "Fluffy", "Magical", "Slimy", "Sloppy", "Elderly", "Stout", "Fat", "Genetically Mutated", "Mutated", "Space", "Cheeky", "Violent", "Amputated", "Snowy", "Poisonous", "Stale", "Alpine", "Rural", "Urban", "Sparkling", "Epicer", "Clumsy", "Interactive", "Edible", "Sublime", "Woollen", "Toxic", "Flammable", "Lazy", "Glowing", "Explosive", "Exploring", "Colossal", "United", "Water", "Clever", "Irresistible", "Grumpy", "Ballistic", "Rebellious", "Majestic"}; 
     String[] secondnameslist = new String[] {"Life", "Warmonger", "Computer", "Buttocks", "Drink", "Aid", "Shot", "Mate", "Standards", "Alien", "Cloud", "Trees", "Nursing", "Time Bomb", "Bomb", "Time", "Times", "Happiness", "Gunfire", "Heart", "Darkness", "Positivity", "Hater", "Oil", "Spy", "Outsider", "Insider", "Biscuit", "Business", "Advertisement", "Instrument", "Balaclava", "Backpacker", "Back Fire", "Believer", "Handler", "Weakling", "Man", "Peacock", "Buddy", "Revenge", "Eye", "Bear", "Bin", "Nose", "Rocket", "Golem", "Guard", "Sentry", "Canine", "Bone", "Error", "Robot", "Rock", "Stick", "Invention", "Bear", "Koala", "Dinosaur", "Bunny", "Bubble", "Chocolate", "Creation", "Accident", "Mutation", "Mongoose", "Vibrations", "Liar", "Merchant", "Orb", "Turnip", "Wombat", "Creature", "Strength", "Contempt", "Disk", "Vegetable", "Vegan", "Squirrel ", "Mud", "Cheese", "Tape", "Lava", "Magma", "Rainbow", "Devil", "Dwarf", "Remix", "Sapling", "Owl", "Poison", "Butterfly", "Flatulence", "Flop", "Fail", "Fart", "Cake", "Monkey", "Penguin", "Dog", "Cat", "Block", "Steam", "Goose", "Waste", "Nightmare", "Potato", "Nerd", "Cookie", "Whale", "Falcon", "Chipmunk", "Carrot", "Donkey", "Toad", "Cauliflower", "Fire", "Gust", "Bumfluff", "Blob", "Puppy", "Cube", "Butt Cheeks", "Bumfluffles"}; 
     for(int i = 0; i < firstnameslist.length; i++){ 
      firstnames.add(firstnameslist[i]); 
     } 
     for(int i = 0; i < secondnameslist.length; i++){ 
      firstnames.add(secondnameslist[i]); 
     } 
     Scanner firstnameinput = null; 
     try{ 
      firstnameinput = new Scanner(new File("firstnameinput.txt")); 
      firstnameinput.useDelimiter(", "); 
     } 
     catch(Exception e){ 
      System.out.println("File firstnameinput.txt not found! :("); 
     } 
     while(firstnameinput.hasNext()){ 
      String a = firstnameinput.next(); 
      System.out.print(a + " "); 

      firstnames.add(a); 
     } 
     firstnameinput.close(); 
     Scanner secondnameinput = null; 
     try{ 
      secondnameinput = new Scanner(new File("secondnameinput.txt")); 
      secondnameinput.useDelimiter(", "); 
     } 
     catch(Exception e){ 
      System.out.println("File secondnameinput.txt not found! :("); 
     } 
     while(secondnameinput.hasNext()){ 
      String a = secondnameinput.next(); 
      System.out.print(a + " "); 

      secondnames.add(a); 
     } 
     secondnameinput.close(); 
     while(true){ 
      Random rnd = new Random(); 

      int n1 = rnd.nextInt(firstnames.size() - 1); 
      int n2 = rnd.nextInt(secondnames.size() - 1); 

      int combinations = firstnames.size() * secondnames.size(); 

      String result = firstnames.get(n1) + " " + secondnames.get(n2); 
      System.out.println(result); 

      label.setText(result); 
      label.setHorizontalAlignment(SwingConstants.CENTER); 
      frame.add(label); 
      try { 
       File file = new File("generatednames.txt"); 
       FileWriter x = new FileWriter(file, true); 
       x.write(result + ", "); 
       x.close(); 
      } catch (FileNotFoundException e) { 
       System.out.println("Could not open or create text file!"); 
      } 
      try{ 
       PrintWriter writer = new PrintWriter("gamenamegeneratorstats.txt", "UTF-8"); 
       writer.println("STATS FOR THIS VERSION"); 
       writer.println("Possible Combinations: " + combinations); 
       writer.println("Please enjoy your generated names!"); 
       writer.close(); 
      } catch (Exception e) { 
       System.out.println("Could not open or create text file!"); 
      } 
      Thread.sleep(2500); 
     } 

    } 
} 

Answer 1

Ihr Code immer noch ein paar Probleme. Das Hauptproblem Sie lernen müssen, ist EDT (Alle anderen Swing-Komponente Methoden müssen vom Event Dispatch Thread aufgerufen werden)

Sie müssen Ihren Code aktualisieren:

frame.setLocationRelativeTo(null); 
frame.setResizable(true); 
frame.setVisible(true); 

mit innerhalb SwingUtilities Aufruf

SwingUtilities.invokeLater(() -> { 
    frame.setLocationRelativeTo(null); 
    frame.setResizable(true); 
    frame.setVisible(true); 
}); 

und ändern:

label.setText(result); 
    label.setHorizontalAlignment(SwingConstants.CENTER); 
    frame.add(label); 

zu

SwingUtilities.invokeLater(() -> { 
     label.setText(result); 
     label.setHorizontalAlignment(SwingConstants.CENTER); 
     frame.add(label); 
     frame.revalidate(); 
     frame.repaint(); 
    });