Solved null exception

i got a console error when something exploded at line 344
here's the code at line 344

Code:java

@EventHandler
    public void noExplode(EntityExplodeEvent event){
        if (Math.abs(event.getEntity().getLocation().getBlockX()) <= 150
                && Math.abs(event.getEntity().getLocation().getBlockZ()) <= 150){
            event.setCancelled(true);
        }
    }

 

Can you please provide a stacktrace?

 

NinjaWAffles

Code:

[21:59:31] [Server thread/ERROR]: Could not pass event EntityExplodeEvent to jim v69
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427) ~[craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:481) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:466) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.Explosion.a(Explosion.java:219) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.World.createExplosion(World.java:1613) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.WorldServer.createExplosion(WorldServer.java:839) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at org.bukkit.craftbukkit.v1_7_R1.CraftWorld.createExplosion(CraftWorld.java:464) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at org.bukkit.craftbukkit.v1_7_R1.CraftWorld.createExplosion(CraftWorld.java:460) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at org.bukkit.craftbukkit.v1_7_R1.CraftWorld.createExplosion(CraftWorld.java:472) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at org.bukkit.craftbukkit.v1_7_R1.CraftWorld.createExplosion(CraftWorld.java:468) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at jim.main.jimMain$7.run(jimMain.java:1274) [jim.jar:?]
    at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftTask.run(CraftTask.java:53) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:587) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
Caused by: java.lang.NullPointerException
    at jim.main.jimMain.noExplode(jimMain.java:344) ~[?:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_45]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_45]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_45]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_45]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425) ~[craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    ... 18 more
[21:59:31] [Server thread/WARN]: [jim] Task #204 for jim v69 generated an exception
java.lang.ClassCastException: org.bukkit.craftbukkit.v1_7_R1.entity.CraftZombie cannot be cast to org.bukkit.entity.Player
    at jim.main.jimMain$7.run(jimMain.java:1276) ~[?:?]
    at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftTask.run(CraftTask.java:53) ~[craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at org.bukkit.craftbukkit.v1_7_R1.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:345) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:587) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g402ee87-b2959jnks]
    at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457) [craftbukkit.jar:git-Bukkit-1.6.4-R2.0-50-g4

 

Strange. Add debug code and see what part of the methods are returning null (publicly null check each chain of the method "event.getEntity().getLocation().getBlockX()")

 

Do as 1Rogue suggested to determine what could be null, but if you haven't noticed, there is also another error. In one of the lines of code (you didn't paste it in your original message), you're trying to cast a Zombie to a Player. You can't do this. You'll want to check if the entity is instance of player before casting.

Code:Java

 
if([entity] instanceof Player)
{
     //Entity is a player...
     Player player = (Player) [entity];
}
 

 

NinjaWAffles
oh thanks
fixed