[SCIP] how to print out optimization model from scip

[usa usa]

Hi,

I am trying to run java scip from IntelliJ Idea (community 2019.2) on
macbook pro.

My java is 11.
My scipoptsuite: 6.0.2.
My jscip cheked out from https://github.com/SCIP-Interfaces/JSCIPOpt

I can run the example well.
e.g.
https://github.com/SCIP-Interfaces/JSCIPOpt/blob/master/examples/Linear.java

I have two questions:

(1) How can I print out the optimization model as .lp file ?

(2) How to set the optimization objective function ?

I cannot find how to do it from https://scip.zib.de/doc/html/PARAMETERS.php
.

Thanks

David
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