Jack o'Lantern
A jack o'lantern is a variant of pumpkin that emits light, and can be used to build golems.
Jigsaw Block
Jigsaw blocks are technical blocks commonly used as a way to construct large structures from smaller sections.
Jukebox
A jukebox is a block used to insert and play music discs. Playing a disc causes it to produce a redstone signal and allows nearby allays to duplicate when given amethyst shards.
Jungle Boat
Boats (including bamboo rafts) are drivable vehicle entities that can be ridden through water or at high speeds across all types of ice. Most mobs will ride nearby boats, which they cannot control or exit on their own.
Jungle Button
A wooden button is a type of button that remains pressed for longer than a stone button and can additionally be pressed by arrows and thrown tridents.
Jungle Boat with Chest
Boats with chests (including bamboo rafts with chests) are boats with single chests occupying their passenger seats. A boat's chest can be accessed by using the boat while sneaking, or while riding it.
Jungle Door
The wooden door is a variant of the door made of wood that can be opened and closed by the player without redstone.
Jungle Fence
A wooden fence is the wooden variant of fences, crafted using planks and sticks.
Jungle Fence Gate
A fence gate is a block that shares the functions of both the door and the fence.
Jungle Hanging Sign
A hanging sign is a variant of a sign that displays text, and can be placed underneath blocks or with a solid self-supporting bracket. The text of hanging signs can be customized with dyes and glow ink sacs, and they can be waxed to prevent edits.
Jungle Leaves
Leaves are transparent natural blocks that generate as part of trees. They decay when not attached to a tree trunk, but persist when placed by a player.
Jungle Log
A log or stem is a naturally occurring block found in trees or huge fungi, primarily used as a building block and to create planks, a versatile crafting ingredient. There are nine types of logs: oak, spruce, birch, jungle, acacia, dark oak, mangrove, cherry blossom, and pale oak; and two types of stems: crimson, and warped.
Jungle Planks
Planks are common blocks used as building blocks and in crafting recipes. They are usually one of the first things that a player crafts in Survival mode. There are currently twelve variants of planks, which can be differentiated into three categories: Overworld planks made from tree logs, bamboo planks made from blocks of bamboo, and nonflammable Nether planks made from huge fungus stems.
Jungle Pressure Plate
A wooden pressure plate is a wooden variant of the pressure plate. It can detect all entities, producing the maximum signal strength of 15. Wooden pressure plates come in all variants of wood.
Jungle Sapling
A sapling is a non-solid block that can be grown into a tree.
Jungle Shelf
A shelf is a block that can store and display up to three stacks of items. A shelf can be used to swap its slots with the slots in the player's hotbar. It swaps 1 slot normally, and 3 slots at a time when powered with redstone.
Jungle Sign
A sign is a non-solid block that can display text, and can be placed on the top or side of other blocks. The text of signs can be customized with dyes and glow ink sacs, and they can be waxed to prevent its text from being edited by any player.
Jungle Slab
A wooden slab is a wooden variant of a slab crafted from its respective planks.
Jungle Stairs
Wooden stairs are a wooden variant of stairs, crafted from their respective planks.
Jungle Trapdoor
A wooden trapdoor is a variant of the trapdoor that can be opened and closed by the player without redstone.
Jungle Hanging Sign
A hanging sign is a variant of a sign that displays text, and can be placed underneath blocks or with a solid self-supporting bracket. The text of hanging signs can be customized with dyes and glow ink sacs, and they can be waxed to prevent edits.
Jungle Sign
A sign is a non-solid block that can display text, and can be placed on the top or side of other blocks. The text of signs can be customized with dyes and glow ink sacs, and they can be waxed to prevent its text from being edited by any player.
Jungle Wood
Wood or hyphae is a block that has the log's "bark" texture on all six sides. It comes in 11 types: oak, spruce, birch, jungle, acacia, dark oak, mangrove, cherry, crimson, warped, and pale oak.
Kelp
Kelp is aquatic algae found in most oceans. It can be planted underwater and grows over time (though not forever) or from bone meal usage. Smelting it results in dried kelp, which is edible and craftable into dried kelp blocks.