Cube Generieren

[Nexus15]

Hallo liebe Community,

leider habe ich ein kleines Problem in meinem Code.
Ich erhalte eine NullPointerException.

public void generatePlot(Location loc, int length, int y) throws InvalidFlagFormat, ProtectionDatabaseException {
        World w = loc.getWorld();
        
        int y_start = loc.getBlockY();
        int x_start = loc.getBlockX();
        int z_start = loc.getBlockZ();
        
        int y_length = y_start + y;
        int x_length = x_start + length;
        int z_length = z_start + length;
        
        for(int x_operate = x_start; x_operate <= x_length; x_operate++) {
            
            for(int y_operate = y_start; y_operate <= y_length; y_operate++) {
                
                for(int z_operate = z_start; z_operate <= z_length; z_operate++) {
                    Block b = w.getBlockAt(x_operate, y_operate, z_operate);
                    b.setType(Material.GRASS);
               }
            }
        }
    }

Hier der Log (ausschnitt):

Caused by: java.lang.NullPointerException
	at com.hiancou.ClickSign.generatePlot(ClickSign.java:201)
	at com.hiancou.ClickSign.onClick(ClickSign.java:107)
	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)
	... 16 more

Zeile 201:

Block b = w.getBlockAt(x_operate, y_operate, z_operate);

 

[games6471]

Hast du es schon einmal versucht Debug-Code einzubinden? Dann kannst du nämlich selber nachschauen woher der NPE kommt. Du wirst dein Plugin bestimmt am besten kennen.