8*8 network of nodes connected with each other

Attachment 3193

I am new to java. I am trying to write a code for a 2D 8*8 network, which is shown above. Each circle represents a node.

Each node is connected to atleast 2, 3, 4 nodes. I tried using arrays, but couldn't figure out how. Please help me out.!!

Thank you.

Do you know what a 2D array is? If so, how did you attempt to use it?