--- a/net/minecraft/world/level/block/entity/TileEntityJukeBox.java
+++ b/net/minecraft/world/level/block/entity/TileEntityJukeBox.java
@@ -24,14 +24,57 @@
 import net.minecraft.world.phys.Vec3D;
 import net.minecraft.world.ticks.ContainerSingleItem;
 
+// CraftBukkit start
+import java.util.List;
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.entity.CraftHumanEntity;
+import org.bukkit.entity.HumanEntity;
+// CraftBukkit end
+
 public class TileEntityJukeBox extends TileEntity implements Clearable, ContainerSingleItem {
 
     private static final int SONG_END_PADDING = 20;
     private final NonNullList<ItemStack> items;
     private int ticksSinceLastEvent;
-    private long tickCount;
-    private long recordStartedTick;
-    private boolean isPlaying;
+    public long tickCount;
+    public long recordStartedTick;
+    public boolean isPlaying;
+    // CraftBukkit start - add fields and methods
+    public List<HumanEntity> transaction = new java.util.ArrayList<HumanEntity>();
+    private int maxStack = MAX_STACK;
+    public boolean opened;
+
+    @Override
+    public List<ItemStack> getContents() {
+        return this.items;
+    }
+
+    @Override
+    public void onOpen(CraftHumanEntity who) {
+        transaction.add(who);
+    }
+
+    @Override
+    public void onClose(CraftHumanEntity who) {
+        transaction.remove(who);
+    }
+
+    @Override
+    public List<HumanEntity> getViewers() {
+        return transaction;
+    }
+
+    @Override
+    public void setMaxStackSize(int size) {
+        maxStack = size;
+    }
+
+    @Override
+    public Location getLocation() {
+        if (level == null) return null;
+        return new org.bukkit.Location(level.getWorld(), worldPosition.getX(), worldPosition.getY(), worldPosition.getZ());
+    }
+    // CraftBukkit end
 
     public TileEntityJukeBox(BlockPosition blockposition, IBlockData iblockdata) {
         super(TileEntityTypes.JUKEBOX, blockposition, iblockdata);
@@ -150,7 +193,7 @@
 
     @Override
     public int getMaxStackSize() {
-        return 1;
+        return maxStack; // CraftBukkit
     }
 
     @Override
@@ -203,7 +246,11 @@
     @VisibleForTesting
     public void setRecordWithoutPlaying(ItemStack itemstack) {
         this.items.set(0, itemstack);
-        this.level.updateNeighborsAt(this.getBlockPos(), this.getBlockState().getBlock());
+        // CraftBukkit start - add null check for level
+        if (level != null) {
+            this.level.updateNeighborsAt(this.getBlockPos(), this.getBlockState().getBlock());
+        }
+        // CraftBukkit end
         this.setChanged();
     }
 }