Add some .toString()s

src/org/bukkit/craftbukkit/CraftBlock.java

@@ -124,4 +124,9 @@ public class CraftBlock implements Block {
     public Block getRelative(final int modX, final int modY, final int modZ) {
         return getWorld().getBlockAt(getX() + modX, getY() + modY, getZ() + modZ);
     }
+
+    @Override
+    public String toString() {
+        return "CraftBlock{" + "world=" + world + "x=" + x + "y=" + y + "z=" + z + "type=" + type + "data=" + data + '}';
+    }
 }

src/org/bukkit/craftbukkit/CraftChunk.java

@@ -29,4 +29,9 @@ public class CraftChunk implements Chunk {
     public int getZ() {
         return z;
     }
+
+    @Override
+    public String toString() {
+        return "CraftChunk{" + "x=" + x + "z=" + z + '}';
+    }
 }

src/org/bukkit/craftbukkit/CraftPlayer.java

@@ -36,4 +36,9 @@ public class CraftPlayer implements Player {
     public EntityPlayerMP getEntity() {
         return player;
     }
+
+    @Override
+    public String toString() {
+        return "CraftPlayer{" + "name=" + name + '}';
+    }
 }