How to use the /fill command with black wool or oak wooden planks?

I would like to know how to use the /fill command to fill black wool. I know how to use the /fill command, but I don't know how to make it fill black wool. Also how do I use the /fill command for oak wooden planks?

3 Answers

For black wool:

/fill X1 Y1 Z1 X2 Y2 Z2 wool 15

The value after the block type is its data value, which is 15 for back wool.

For oak planks

/fill X1 Y1 Z1 X2 Y2 Z2 planks

As of Minecraft 1.13, filling areas with black wool no longer requires the use of cryptic numbers:

/fill X1 Y1 X1 X2 Y2 X2 black_wool

The command

/fill X1 Y1 Z1 X2 Y2 Z2 wool (Number)

will give you a wool color.