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Frage
von HosenFcker
16.04.2024, 00:02
Minecraft 1.20.4 - Eclipse Programmierung, kann keine Imports machen?

Ich möchte mit Java ein Plugin für 1.20.4 programmieren und habe mir ein Code von ChatGPT schreiben lassen.

package de.diamanthoe.plugin;

import org.bukkit.Material;

import org.bukkit.Particle;

import org.bukkit.command.Command;

import org.bukkit.command.CommandSender;

import org.bukkit.command.CommandExecutor;

import org.bukkit.configuration.ConfigurationSection;

import org.bukkit.configuration.file.FileConfiguration;

import org.bukkit.entity.Player;

import org.bukkit.inventory.Inventory;

import org.bukkit.inventory.ItemStack;

import org.bukkit.inventory.meta.ItemMeta;

import org.bukkit.plugin.java.JavaPlugin;

import org.bukkit.Location;

public class NaviSystem extends JavaPlugin implements CommandExecutor {

  @Override

  public void onEnable() {

    // Register commands

    getCommand("navi").setExecutor(this);

  }

  @Override

  public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {

    if (!(sender instanceof Player)) {

      sender.sendMessage("Dieser Befehl kann nur von Spielern ausgeführt werden.");

      return true;

    }

    Player player = (Player) sender;

    if (cmd.getName().equalsIgnoreCase("navi")) {

      if (args.length >= 1) {

        if (args[0].equalsIgnoreCase("save")) {

          if (args.length >= 2) {

            savePoint(args[1], player.getLocation());

            sender.sendMessage("Punkt gespeichert unter: " + args[1]);

          } else {

            sender.sendMessage("Verwendung: /navi save [Name]");

          }

        } else {

          if (args.length >= 3) {

            try {

              double x = Double.parseDouble(args[0]);

              double y = Double.parseDouble(args[1]);

              double z = Double.parseDouble(args[2]);

              Location target = new Location(player.getWorld(), x, y, z);

              createParticleTrail(player, target);

            } catch (NumberFormatException e) {

              sender.sendMessage("Ungültige Koordinaten.");

            }

          } else {

            sender.sendMessage("Verwendung: /navi <x y z>");

          }

        }

      } else {

        sender.sendMessage("Verwendung: /navi <x y z>");

      }

    }

    return true;

  }

  private void createParticleTrail(Player player, Location target) {

    Location playerLocation = player.getLocation();

    player.spawnParticle(Particle.REDSTONE, playerLocation, 0, target.getX(), target.getY(), target.getZ(), 10);

  }

  private void savePoint(String name, Location location) {

    FileConfiguration config = getConfig();

    config.set("points." + name + ".world", location.getWorld().getName());

    config.set("points." + name + ".x", location.getX());

    config.set("points." + name + ".y", location.getY());

    config.set("points." + name + ".z", location.getZ());

    saveConfig();

  }

  private void openPointsGUI(Player player) {

    Inventory gui = getServer().createInventory(null, 9, "Gespeicherte Punkte");

    ConfigurationSection pointsSection = getConfig().getConfigurationSection("points");

    if (pointsSection != null) {

      for (String pointName : pointsSection.getKeys(false)) {

        ConfigurationSection pointConfig = pointsSection.getConfigurationSection(pointName);

        if (pointConfig != null) {

          String worldName = pointConfig.getString("world");

          double x = pointConfig.getDouble("x");

          double y = pointConfig.getDouble("y");

          double z = pointConfig.getDouble("z");

          ItemStack pointItem = createPointItem(worldName, x, y, z);

          gui.addItem(pointItem);

        }

      }

    }

    player.openInventory(gui);

  }

  private ItemStack createPointItem(String worldName, double x, double y, double z) {

    ItemStack item = new ItemStack(Material.COMPASS);

    ItemMeta meta = item.getItemMeta();

    meta.setDisplayName(worldName + " - " + x + ", " + y + ", " + z);

    item.setItemMeta(meta);

    return item;

  }

}

Das Problem ist, dass da total viel rot unterstrichen wird, was wahrscheinlich auf die Imports zurückzuführen ist. Die Imports selbst sind teilweise ebenso rot interstrichen (org.bukkit).

Ich benutze das JDK 17 und Java SE 1.8.

Java, Minecraft, Code, Minecraft Server, Programmiersprache, Bukkit, Spigot
1 Antwort
Frage
von verreisterNutzer
10.04.2024, 01:04
Code Error Java?
public class Main {
public static void main(String[] args) {


    GUI gui = new GUI();
    
    }
    
   public static int fak (int n) {
        if (n == 0) {
            return 1;
        }
        return n * fak(n - 1);
    }
    
}

import javax.swing.*;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;


import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;


public class GUI extends JFrame {
    JButton button = new JButton("Berechnen");
    JLabel label = new JLabel("Bitte geben Sie die Zahl ein: ");
    JTextField textfield = new JTextField(2);
    JOptionPane popup = new JOptionPane();
    JPanel panel = new JPanel();
    
    public GUI () {
        setSize(300, 300);
        setTitle("Fakultätsrechner");
        setLayout(new FlowLayout());
        setVisible(true);
        
        panel.add(textfield);
        panel.add(label);
        panel.add(button);
        add(panel);
        
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        setVisible(true);


        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                try {
                    String input = textfield.getText();
                    int number = Integer.parseInt(input);
                    int result = Main.fak(number);
                    JOptionPane.showMessageDialog(null, "Die Fakultät von " + number + " ist " + result);
                } catch (NumberFormatException ex) {
                    JOptionPane.showMessageDialog(null, "Bitte geben Sie eine gültige Ganzzahl ein.");
                }
            }
        });
        
    }





}

Error: java.lang.ClassNotFoundException: Main

Aber wieso findet er denn die Main-Klasse nicht? Verstehe ich nicht.

App, Java, Minecraft, Array, Code, Eclipse, Minecraft Server, Programmiersprache, Swing, game-development, Bukkit, Spigot, Java Swing, Android Studio
2 Antworten

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