Defining a binary decision variable in java using cplex

Question

I am trying to define a binary decision variable in java using cplex. That\'s a two dimensional variable. It means that if a path starts from a specific station it should be 1 o

Answer 1

For a binary decision variable you may prefer to use IloBoolVar rather than the IloNumVar or even IloIntVar options.

You do need to declare the dimension in one of two ways, however. You've declared new IloNumVar[stations_start.size()][]; but not specified the second dimension. The easiest approach would be to declare:

z = new IloBoolVar[stations_start.size()][paths.size()];

Alternately you can keep your existing declaration, but in the loop add on the second dimension:

z = new IloBoolVar[stations_start.size()][];
for (int j=0; j