Java Interface

This section will work through a simple Java example in order to illustrate the use of the Gurobi Java interface. The example builds a model, optimizes it, and outputs the optimal objective value. This section assumes that you are already familiar with the Java programming language. If not, a variety of books and websites are available for learning the language (for example, the online Java tutorials).

If you are using an integrated development environment like Eclipse®, we recommend that you import the file <installdir>/lib/gurobi-javadoc.jar, which contains Javadoc documentation for the Gurobi Java interface.

Our example optimizes the following model:

maximize x + y + 2 z    
subject to x + 2 y + 3 z <span>$</span>\leq<span>$</span> 4
  x + y     <span>$</span>\geq<span>$</span> 1
  x, y, z binary  
Note that this is the same model that was modeled and optimized in the C Interface section.


Try Gurobi for Free

Choose the evaluation license that fits you best, and start working with our Expert Team for technical guidance and support.

Evaluation License
Get a free, full-featured license of the Gurobi Optimizer to experience the performance, support, benchmarking and tuning services we provide as part of our product offering.
Academic License
Gurobi supports the teaching and use of optimization within academic institutions. We offer free, full-featured copies of Gurobi for use in class, and for research.
Cloud Trial

Request free trial hours, so you can see how quickly and easily a model can be solved on the cloud.