I'm not sure on how to code for this if -else diagram

jave is the language

These are system.o mixture > 23.5 Decrease Fuel Mixture by 0.30 False mixture 23.0 Decrease Fuel Mixture by 0.10 False mixture 2 22.5 Decrease Fuel Mixture by 0.05 False mixture 2 21.0 Decrease Fuel Mixture is OK False mixture z 20.0 Increase Fuel Mixture by 0.10 False Sensor needs to be checked