how much same code java and android

Actually android is just a framework , but under the hood it all java magic. so you must have solid understating of java. core java is must. after that android is piece of api is which wrtting plugins(activity,services etc)

see mr.rajesh basically java uses the basic API's or i can say packages but if we take the example of Android it uses the different API's and it has a difference in execution of program, android uses the emulators for execution and compilation on the other hand simple java uses the editor like net

I think you wanted to ask what is the difference between Java and android coding ? If yes then its two different things defenetily basics are same but compilation packaging and testing are different.