I am traversing an adjacency matrix

if I am in a for loop and want to check if

an adj matrix adjmatrix[x][y] has an entry at index x and index y in a if statement; how would i do that?

right now i have

[code]

if(adj[x][y] && value[x]< -priority)

{

}

but

java doesn't like it

So, how would I say, in an "if" statement

if the adjacency matrix has an entry at [x][y]

how would i write that in java?

Thanks.