Fighter class DC

[Crexis]

I've made a dwarf druid and was going to multiclass into fighter for class feat 2 and 4 to take attack of opportunity.

It states I become trained in fighter class DC at MC level 2 for fighter dedication. When exactly would I use fighter class DC? What does it all encompass?

thanks for any help

[Fuzzy-Wuzzy]

I don't believe any current fighter features or feats use its class DC, but as more feats are added some may. It's for things like the monk's Stunning Fist feat---the victim makes a Fort save vs monk class DC to avoid being stunned.