Can someone help me figure out this program. I just can't seem to get it working correctly. It needs to be in java.

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Consider an NNgrid in which some squares are occupied. Two

squares belong to the same group if they share a common edge. In

Figure 7.30 there is one group of four occupied squares, three groups

of two occupied squares, and two individual occupied squares.

Assume that the grid is represented by a two-dimensional array. Write

a program that:

a.Computes the size of a group when a square in the group is given

b.Computes the number of different groups

c.Lists all groups