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Setting the objective

The next step in the example is to set the optimization objective:

      // Set objective: maximize x + y + 2 z
      GRBLinExpr expr = new GRBLinExpr();
      expr.addTerm(1.0, x); expr.addTerm(1.0, y); expr.addTerm(2.0, z);
      model.setObjective(expr, GRB.MAXIMIZE);

The objective must be a linear or quadratic function of the variables in the model. In our example, we build our objective by first constructing an empty linear expression and adding three terms to it.

The second argument to setObjective indicates that the optimization sense is maximization.

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