Why does Solver ask for JRE if it works without it?

[canunca]

Learned about Calc’s Solver option and when I went to try it out I got the “LibreOffice requires a 32-bit Java runtime environment (JRE) to perform this task. Please install a JRE and restart LibreOffice. Frequently asked questions - General - The Document Foundation Wiki” message box, but it worked without it.

Is it used for something specific in Solver or is this bug?

[mikekaganski]

Why does Solver ask for JRE if it works without it?

Because it tries to initialize the two actually useful non-linear solvers, and those need Java. When you decline, it still has solvers, that don’t need Java (so it works somewhat) - but two of them are linear, and one experimental.

What you get with Java enabled:

What you get without:

[canunca]

So that’s why it appears. Thanks for clearing up my question.