eclipse - How to (step over) or (step in) Debug Process in Android Studio -

i have been traditionally using eclipse more 5 years , have done projects in hybrid web , android , blackberry , j2me .

well , question pretty simple . used keys f5,f6,and f8 debugging app process. , new android studio . kindly guide me alternatives present . have gone through link , android debugging question still not convince me add watches , in eclipse add watches or using expressions

attach debugger , add breakpoints loc, , press f9 move on breakpoints , f8 next line. please check link details