Big dig server wont start

[ADVENTUREUPDATE]

it shows

C:\Users\adven_000\Desktop\Big Dig>java -Xmx512MB -Xms512MB -jar BigDig.jar nogu

i

'java' is not recognized as an internal or external command,

operable program or batch file.

C:\Users\adven_000\Desktop\Big Dig>pause

Press any key to continue . . .

[Voxel]

How did you start the server?

[miniboxer]

it shows

C:\Users\adven_000\Desktop\Big Dig>java -Xmx512MB -Xms512MB -jar BigDig.jar nogu

i

'java' is not recognized as an internal or external command,

operable program or batch file.

C:\Users\adven_000\Desktop\Big Dig>pause

Press any key to continue . . .

Add java to your path variable.