NoSuchElementException: No Line Found Help

Discussion in 'Plugin Development' started by xMakerx, May 19, 2013.

Thread Status:
Not open for further replies.
  1. Offline

    xMakerx

    So I'm coding a plugin and I keep getting an error, here's the code and the error:


    NemesisEvents.java
    Code:
    package xmx.nem;
 
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import java.util.logging.Logger;
 
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Sound;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.PlayerDeathEvent;
import org.bukkit.event.player.PlayerJoinEvent;
 
public class NemesisEvents implements Listener {
   
    public static Nemesis plugin;
    public final Logger logger = Logger.getLogger("Minecraft");
   
    public NemesisEvents(Nemesis instance) {
        plugin = instance;
    }
   
    @EventHandler(priority = EventPriority.HIGH)
    public void onPlayerJoin(PlayerJoinEvent e) {
        Player player = e.getPlayer();
          File[] dirlist = plugin.getDataFolder().listFiles();
 
          for(int i = 0; i < dirlist.length; i++) {
            if(dirlist[i].isFile()) {
            } else if(!dirlist[i].getName().matches(player.getName() + ".yml")) {
                File user;
                user = new File(plugin.getDataFolder(), (player.getName() + ".yml"));
                if(!user.exists()) {
                try {
                    user.createNewFile();
                    FileWriter fw = new FileWriter(user, true);
                    fw.write("# -" + player.getName() + " Data -\n\n");
                    fw.write("Kills: " + 0 + "\n");
                    fw.write("Deaths: " + 0 + "\n");
                    //fw.write("Dominations: " + "\n");
                    fw.close();
                    FileConfiguration editor = YamlConfiguration.loadConfiguration(user);
                    List<String> list = editor.getStringList("Dominations");
                    list.add("example");
                    editor.set("Dominations", list);
                    try {
                        editor.save(user);
                       
                    }catch(IOException z) {
                        z.getStackTrace();
                    }
                }catch(IOException z) {
                    z.getStackTrace();
                }
            }
          }
          }       
    }
   
    public void announceDomination(Player dead, Player nemesis) {
        Player defeated = dead;
        Player killer = nemesis;
        Bukkit.broadcastMessage(Nemesis.pluginPrefix + ChatColor.RED + killer.getName() + ChatColor.GREEN + " is dominating " + ChatColor.RED + defeated.getName());
        killer.playSound(killer.getLocation(), Sound.ANVIL_LAND, 10F, 10F);
    }
   
    public void announceRevenge(Player nemesis, Player killer) {
        Player dead = nemesis;
        Player attacker = killer;
        Bukkit.broadcastMessage(Nemesis.pluginPrefix + ChatColor.RED + attacker.getName() + ChatColor.GREEN + " got a revenge kill on " + ChatColor.RED + dead.getName());
        attacker.playSound(attacker.getLocation(), Sound.ANVIL_BREAK, 10F, 10F);
    }
   
    @EventHandler
    public void onPlayerDeath(PlayerDeathEvent e) {
        Player dead = e.getEntity();
        Player killer;
        FileConfiguration deadConf;
        FileConfiguration killerConf;
        FileConfiguration killerConf02;
            File[] dirlist = plugin.getDataFolder().listFiles();
            File killerFile;
            File killerFile02;
            Bukkit.broadcastMessage("SHSdf");
                if(e.getEntity().getKiller() instanceof Player) {
                    killer = dead.getKiller();
                    for(int i = 0; i < dirlist.length; i++) {
                        if(dirlist[i].isFile()) {
                            if(dirlist[i].getName().matches(dead.getName() + ".yml")) {
                                File deadFile = dirlist[i].getAbsoluteFile();
                                deadConf = YamlConfiguration.loadConfiguration(deadFile);
                                Bukkit.broadcastMessage("MEOW");
                                List<String> dominations = deadConf.getStringList("Dominations");
                                for(int d = 0; d < dominations.size(); d++) {
                                    if(dominations.get(d).matches(killer.getName())) {
                                        dominations.remove(d);
                                        announceRevenge(dead, killer);
                                        Bukkit.broadcastMessage("BETCH");
                                        killerFile = new File(plugin.getDataFolder() + "/" + killer.getName() + ".yml");
                                        killerConf = YamlConfiguration.loadConfiguration(killerFile);
                                        int kills = killerConf.getInt("Kills");
                                        kills = kills + 1;
                                    }else if(!(dominations.get(d).matches(killer.getName()))) {
                                        Bukkit.broadcastMessage("SADJASD");
                                        killerFile02 = FileSearcher(killer);
                                        killerConf02 = YamlConfiguration.loadConfiguration(killerFile02);
                                        int killerkills = killerConf02.getInt("Kills");
                                        killerkills = killerkills + 1;
                                        try {
                                            Bukkit.broadcastMessage("WOOF");
                                            Scanner scanner = new Scanner(killerFile02, "UTF-8");;
                                            String currentLine = scanner.nextLine();
                                            while(scanner.hasNextLine()) {
                                              currentLine = scanner.nextLine();
                                                Bukkit.broadcastMessage("ASDNABNdbsASNBDMANSdnm");
                                                if(scanner.nextLine().contains(dead.getName())) {
                                                int deadkills = killerConf02.getInt(dead.getName());
                                                deadkills = deadkills + 1;
                                                Bukkit.broadcastMessage("SJDKASKDAKHSd");
                                                if(deadkills >= 3) {
                                                    List<String> killerdominations = killerConf02.getStringList("Dominations");
                                                    for(int k = 0; k < killerdominations.size(); k++) {
                                                        if(!(killerdominations.get(k).matches(dead.getName()))) {
                                                            killerdominations.add(dead.getName());
                                                            announceDomination(dead, killer);
                                                        }
                                                    }
                                                }else if(!(scanner.nextLine().contains(dead.getName()))) {
                                                    Bukkit.broadcastMessage("BETCH");
                                                        killerConf02.set("\n" + dead.getName(), 1);
                                                }
                                                }
                                                }
                                            scanner.close();
                                            } catch (FileNotFoundException z) {
                                                // TODO Auto-generated catch block
                                                z.printStackTrace();
                                            }
                                                   
                                              }
                                        }
                                    }
                                }
                            }
                }
    }
   
    public static File FileSearcher(Player player) {
        File result = null; // no need to store result as String, you're returning File anyway
          File[] dirlist = plugin.getDataFolder().listFiles();
         
            for(int i = 0; i < dirlist.length; i++) {
                if(dirlist[i].isFile()) {
                    if(dirlist[i].getName().matches(player.getName() + ".yml")) {
                        return dirlist[i].getAbsoluteFile();
                    }
                }
            }
            return null;
    }
}
    Main Class:
    Code:
    package xmx.nem;
 
import java.io.File;
import org.bukkit.ChatColor;
import org.bukkit.plugin.java.JavaPlugin;
 
public class Nemesis extends JavaPlugin {
   
    public static Nemesis plugin;
    public static String pluginPrefix = (ChatColor.GREEN + "[" + ChatColor.YELLOW + "Nemesis" + ChatColor.GREEN + "] " + ChatColor.GREEN);
   
    public void onEnable() {
        getServer().getPluginManager().registerEvents(new NemesisEvents(this), this);
        createUserDataFolder();
    }
   
    public void createUserDataFolder() {
       
        /**
        * Create the userdata folder for the plugin to store data.
        */
       
        File userdatafolder = new File(this.getDataFolder() + File.separator + "userdata");
       
            if(!this.getDataFolder().exists()) {
                this.getDataFolder().mkdirs();
            }else {
                if(!userdatafolder.exists()) {
                    userdatafolder.mkdirs();
                }
            }
           
    }
   
}
    Error:
    Code:
    2013-05-19 08:06:45 [SEVERE] Could not pass event PlayerDeathEvent to Nemesis v1.0
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
    at org.bukkit.craftbukkit.v1_5_R3.event.CraftEventFactory.callPlayerDeathEvent(CraftEventFactory.java:340)
    at net.minecraft.server.v1_5_R3.EntityPlayer.die(EntityPlayer.java:293)
    at net.minecraft.server.v1_5_R3.EntityLiving.damageEntity(EntityLiving.java:750)
    at net.minecraft.server.v1_5_R3.EntityHuman.damageEntity(EntityHuman.java:684)
    at net.minecraft.server.v1_5_R3.EntityPlayer.damageEntity(EntityPlayer.java:358)
    at net.minecraft.server.v1_5_R3.EntityHuman.attack(EntityHuman.java:874)
    at net.minecraft.server.v1_5_R3.PlayerConnection.a(PlayerConnection.java:1101)
    at net.minecraft.server.v1_5_R3.Packet7UseEntity.handle(SourceFile:36)
    at net.minecraft.server.v1_5_R3.NetworkManager.b(NetworkManager.java:292)
    at net.minecraft.server.v1_5_R3.PlayerConnection.d(PlayerConnection.java:109)
    at net.minecraft.server.v1_5_R3.ServerConnection.b(SourceFile:35)
    at net.minecraft.server.v1_5_R3.DedicatedServerConnection.b(SourceFile:30)
    at net.minecraft.server.v1_5_R3.MinecraftServer.r(MinecraftServer.java:581)
    at net.minecraft.server.v1_5_R3.DedicatedServer.r(DedicatedServer.java:226)
    at net.minecraft.server.v1_5_R3.MinecraftServer.q(MinecraftServer.java:477)
    at net.minecraft.server.v1_5_R3.MinecraftServer.run(MinecraftServer.java:410)
    at net.minecraft.server.v1_5_R3.ThreadServerApplication.run(SourceFile:573)
Caused by: java.util.NoSuchElementException: No line found
    at java.util.Scanner.nextLine(Unknown Source)
    at xmx.nem.NemesisEvents.onPlayerDeath(NemesisEvents.java:131)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
    ... 20 more
    I need an answer ASAP, please help me out, thank you :D
     
    xMakerx, May 19, 2013
    #1
  2. Offline

    Technius

    xMakerx
    Just make
    Code:
    String currentLine = scanner.nextLine();
    this:
    Code:
    String currentLine;
     
    Technius, May 19, 2013
    #2
  3. Offline

    socram8888

    Well, as the Exception points out, the file you're trying to read is empty and does not contain any line.
     
    socram8888, May 19, 2013
    #3
  4. Offline

    xMakerx

    How exactly? Upon player join it creates a .yml file with information in it, when I go to view the file it does indeed have the information needed in it. But, maybe. I've never had this error before, thanks for your advise though.

    Update:

    Removed the currentline variables and the code doesn't go past: Bukkit.broadcastMessage("ASDNABNdbsASNBDMANSdnm");

    Here's my updated code:
    Code:
    package xmx.nem;
 
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.List;
import java.util.Scanner;
import java.util.logging.Logger;
 
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Sound;
import org.bukkit.configuration.file.FileConfiguration;
import org.bukkit.configuration.file.YamlConfiguration;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.EventPriority;
import org.bukkit.event.Listener;
import org.bukkit.event.entity.PlayerDeathEvent;
import org.bukkit.event.player.PlayerJoinEvent;
 
public class NemesisEvents implements Listener {
   
    public static Nemesis plugin;
    public final Logger logger = Logger.getLogger("Minecraft");
   
    public NemesisEvents(Nemesis instance) {
        plugin = instance;
    }
   
    @EventHandler(priority = EventPriority.HIGH)
    public void onPlayerJoin(PlayerJoinEvent e) {
        Player player = e.getPlayer();
          File[] dirlist = plugin.getDataFolder().listFiles();
 
          for(int i = 0; i < dirlist.length; i++) {
            if(dirlist[i].isFile()) {
            } else if(!dirlist[i].getName().matches(player.getName() + ".yml")) {
                File user;
                user = new File(plugin.getDataFolder(), (player.getName() + ".yml"));
                if(!user.exists()) {
                try {
                    user.createNewFile();
                    FileWriter fw = new FileWriter(user, true);
                    fw.write("# -" + player.getName() + " Data -\n\n");
                    fw.write("Kills: " + 0 + "\n");
                    fw.write("Deaths: " + 0 + "\n");
                    //fw.write("Dominations: " + "\n");
                    fw.close();
                    FileConfiguration editor = YamlConfiguration.loadConfiguration(user);
                    List<String> list = editor.getStringList("Dominations");
                    list.add("example");
                    editor.set("Dominations", list);
                    try {
                        editor.save(user);
                       
                    }catch(IOException z) {
                        z.getStackTrace();
                    }
                }catch(IOException z) {
                    z.getStackTrace();
                }
            }
          }
          }       
    }
   
    public void announceDomination(Player dead, Player nemesis) {
        Player defeated = dead;
        Player killer = nemesis;
        Bukkit.broadcastMessage(Nemesis.pluginPrefix + ChatColor.RED + killer.getName() + ChatColor.GREEN + " is dominating " + ChatColor.RED + defeated.getName());
        killer.playSound(killer.getLocation(), Sound.ANVIL_LAND, 10F, 10F);
    }
   
    public void announceRevenge(Player nemesis, Player killer) {
        Player dead = nemesis;
        Player attacker = killer;
        Bukkit.broadcastMessage(Nemesis.pluginPrefix + ChatColor.RED + attacker.getName() + ChatColor.GREEN + " got a revenge kill on " + ChatColor.RED + dead.getName());
        attacker.playSound(attacker.getLocation(), Sound.ANVIL_BREAK, 10F, 10F);
    }
   
    @EventHandler
    public void onPlayerDeath(PlayerDeathEvent e) {
        Player dead = e.getEntity();
        Player killer;
        FileConfiguration deadConf;
        FileConfiguration killerConf;
        FileConfiguration killerConf02;
            File[] dirlist = plugin.getDataFolder().listFiles();
            File killerFile;
            File killerFile02;
            Bukkit.broadcastMessage("SHSdf");
                if(e.getEntity().getKiller() instanceof Player) {
                    killer = dead.getKiller();
                    for(int i = 0; i < dirlist.length; i++) {
                        if(dirlist[i].isFile()) {
                            if(dirlist[i].getName().matches(dead.getName() + ".yml")) {
                                File deadFile = dirlist[i].getAbsoluteFile();
                                deadConf = YamlConfiguration.loadConfiguration(deadFile);
                                Bukkit.broadcastMessage("MEOW");
                                List<String> dominations = deadConf.getStringList("Dominations");
                                for(int d = 0; d < dominations.size(); d++) {
                                    if(dominations.get(d).matches(killer.getName())) {
                                        dominations.remove(d);
                                        announceRevenge(dead, killer);
                                        Bukkit.broadcastMessage("BETCH");
                                        killerFile = new File(plugin.getDataFolder() + "/" + killer.getName() + ".yml");
                                        killerConf = YamlConfiguration.loadConfiguration(killerFile);
                                        int kills = killerConf.getInt("Kills");
                                        kills = kills + 1;
                                    }else if(!(dominations.get(d).matches(killer.getName()))) {
                                        Bukkit.broadcastMessage("SADJASD");
                                        killerFile02 = FileSearcher(killer);
                                        killerConf02 = YamlConfiguration.loadConfiguration(killerFile02);
                                        int killerkills = killerConf02.getInt("Kills");
                                        killerkills = killerkills + 1;
                                        try {
                                            Bukkit.broadcastMessage("WOOF");
                                            Scanner scanner = new Scanner(killerFile02, "UTF-8");;
                                            while(scanner.hasNextLine()) {
                                                Bukkit.broadcastMessage("ASDNABNdbsASNBDMANSdnm");
                                                if(scanner.nextLine().contains(dead.getName())) {
                                                int deadkills = killerConf02.getInt(dead.getName());
                                                deadkills = deadkills + 1;
                                                Bukkit.broadcastMessage("SJDKASKDAKHSd");
                                                if(deadkills >= 3) {
                                                    List<String> killerdominations = killerConf02.getStringList("Dominations");
                                                    for(int k = 0; k < killerdominations.size(); k++) {
                                                        if(!(killerdominations.get(k).matches(dead.getName()))) {
                                                            killerdominations.add(dead.getName());
                                                            announceDomination(dead, killer);
                                                        }
                                                    }
                                                }else if(!(scanner.nextLine().contains(dead.getName()))) {
                                                    Bukkit.broadcastMessage("BETCH");
                                                        killerConf02.set("\n" + dead.getName(), 1);
                                                }
                                                }
                                                }
                                            scanner.close();
                                            } catch (FileNotFoundException z) {
                                                // TODO Auto-generated catch block
                                                z.printStackTrace();
                                            }
                                                   
                                              }
                                        }
                                    }
                                }
                            }
                }
    }
   
    public static File FileSearcher(Player player) {
          File[] dirlist = plugin.getDataFolder().listFiles();
         
            for(int i = 0; i < dirlist.length; i++) {
                if(dirlist[i].isFile()) {
                    if(dirlist[i].getName().matches(player.getName() + ".yml")) {
                        return dirlist[i].getAbsoluteFile();
                    }
                }
            }
            return null;
    }
}
    EDIT by Moderator: merged posts, please use the edit button instead of double posting.
     
    Last edited by a moderator: Jun 1, 2016
    xMakerx, May 19, 2013
    #4
  5. Offline

    Forge_User_12587549

    xMakerx
    I belive you must use scanner.hasNext() to be sure it has a next line before getting the line.
     
    Forge_User_12587549, May 19, 2013
    #5
  6. Offline

    Technius

    xMakerx
    Stack trace please.

    If you really can't fix this, you could use a BufferedReader instead:
    Code:
    BufferedReader br = new BufferedReader(new FileInputStream(new File("File name")));
String l;
while((l=br.readLine()) != null)
{
     //Do stuff
}
     
    Technius, May 19, 2013
    #6
  7. Offline

    xMakerx

    Technius
    How would I check if it's at the final line and see if the line contains the dead.getName() ?
     
    xMakerx, May 19, 2013
    #7
  8. Offline

    Technius

    xMakerx You could try something like this:
    Code:
    BufferedReader br = new BufferedReader(new FileInputStream(new File("File name")));
String l;
String last;
while((l=br.readLine()) != null)
{
     last = l;
     //Do stuff
}
     
    Technius, May 19, 2013
    #8
  9. Offline

    ZeusAllMighty11

    I had an issue like this once, it's because I did:

    Code:
    Scanner sc =...
 
while(sc.hasNext()){
    Object next= sc.next();
    if(next...)
}
    as opposed to keep doing sc.next()
     
    ZeusAllMighty11, May 19, 2013
    #9
Thread Status:
Not open for further replies.

Share This Page