This guide is a simplified overview of all the changes in the Java Edition 1.2.x releases, which assumes at least some familiarity with Java Edition 1.1.
Mobs[]
New[]
| Name | Image | Habitat | Drops | Note |
|---|---|---|---|---|
| Iron Golem |  |
Spawns occasionally in villages. Created when 4 iron blocks are placed in a T-shape with a pumpkin on top. |
|
Defend villages by attacking hostile mobs. |
| Ocelot and Cat |     |
Spawns in jungle biomes. | 1–3 (when killed by a player or tamed wolf) | Can be tamed using fish. Will turn into cats if tamed. Will follow and teleport to the player if they get too far away. Cats will scare off nearby creepers. |
Blocks[]
New[]
| Name | Image | Obtaining | Tool Required | Uses | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Redstone Lamp |   |
Any | Gives off a light level of 15 when powered by redstone. | |||||||||
| Jungle Log |  |
Make up jungle trees. | Axe | Can be crafted into jungle planks. | ||||||||
| Jungle Leaves |  |
Shears | Can drop jungle saplings. | |||||||||
| Jungle Sapling |  |
Dropped by jungle leaves. | Any | Can grow into jungle trees. | ||||||||
| Spruce Wood Planks Birch Wood Planks Jungle Wood Planks |
|
|
Axe | Used in many crafting recipes. | ||||||||
| Cut Sandstone and Chiseled Sandstone |   |
|
Pickaxe | Decoration blocks. | ||||||||
| Chiseled Stone Bricks |  |
Creative mode inventory. | Pickaxe | Decoration block. |
Items[]
New[]
| Name | Image | Obtaining | Uses | ||||
|---|---|---|---|---|---|---|---|
| Fire Charge |  |
|
Spawns fire when used. Can be fired from a dispenser. | ||||
| Bottle o' Enchanting |  |
Creative mode inventory. | Spawns experience orbs when splashed. | ||||
| Ocelot Spawn Egg |  |
Creative mode inventory. | Spawns ocelots when used. |
Biomes[]
New[]
| Name | Image | Description | Structures |
|---|---|---|---|
| Jungle |  |
A common and dense biome full of jungle trees made up of jungle logs and jungle leaves. | Jungle Trees |
Structures[]
New[]
| Name | Image | Generates | Chests | Mobs | Description |
|---|---|---|---|---|---|
| Jungle tree |   |
Found throughout jungle biomes | None | None | Are comprised of a trunk of jungle logs with jungle leaves on top, and are covered in vines. |
| Desert well |  |
Found rarely in desert biomes | None | None | Are comprised of sandstone with a block of water in the middle. |