Add scheduling algorithms in java.

[jinicode]

I would love to work on this algorithms for hacktoberfest.
Please assign me this task and add labels.

[saiharsha-22]

@hacktoberhack Hi, I would like to contribute FCFS and SJFS codes in java for CPU Scheduling algorithm can, you assign this task to me.

[saiharsha-22]

@hacktoberhack I have sent a pull request for scheduling algorithms can you please check