Sem 4 Operating System (OS) : Round Robin process scheduling Java Code / Program

Given below is the Java code for Round Robin Process Scheduling algorithm.

import java.util.*; class Process { Scanner scr=new Scanner(System.in); int p[]; int bt,tt,wt; Process(int i) { System.out.println("Enter the burst time of process "+(i+1)); bt=scr.nextInt(); } } class RR1 { static boolean check(Process p[],int n) { int s=0; for(int i=0;i<n;++i) s+=p[i].bt; if(s<=0) return false; else return true; } public static void main(String args[]) { Scanner scr=new Scanner(System.in); System.out.println("Enter the number of processes"); int n =scr.nextInt(); Process p[]=new Process[n]; for(int i=0;i<n;++i) p[i]=new Process(i); System.out.println("The quantum size is 5 ms "); int burst[]=new int[n]; for(int i=0;i<n;++i) burst[i]=p[i].bt; for(int i=0;i<n;++i) System.out.println("The burst time of process "+(i+1)+" is "+burst[i]); int time=0; int temp; int flag[]=new int[n]; for(int i=0;i<n;++i) flag[i]=0; do { loop:for(int k=0;k<n;++k) { //System.out.println(" Flag value is "+flag[k]); if(flag[k]==0) { temp=p[k].bt; if(p[k].bt>5) { p[k].bt-=5; time+=5; //System.out.println("The time value "+time); } else { p[k].bt=0; time+=temp; p[k].tt=time; flag[k]=1; //System.out.println("The process "+(k+1)+" ends"); //System.out.println("flag value "+flag[k]); } } else continue loop; } } while(check(p,n)); for(int i=0;i<n;++i) p[i].wt=p[i].tt-burst[i]; double s1=0,s2=0; for(int i=0;i<n;++i) { System.out.println("The turn around time of process "+(i+1)+" is "+p[i].tt); System.out.println("The wait time of process "+(i+1)+" is "+p[i].wt); } for(int i=0;i<n;++i) s1+=p[i].tt; for(int i=0;i<n;++i) s2+=p[i].wt; double att=0,awt=0; att=s1/n; awt=s2/n; System.out.println("The average turn around time is "+att+"\nThe average wait time is "+awt); } } /* Output Enter the number of processes 4 Enter the burst time of process 1 12 Enter the burst time of process 2 3 Enter the burst time of process 3 7 Enter the burst time of process 4 15 The quantum size is 5 ms The burst time of process 1 is 12 The burst time of process 2 is 3 The burst time of process 3 is 7 The burst time of process 4 is 15 The turn around time of process 1 is 32 The wait time of process 1 is 20 The turn around time of process 2 is 8 The wait time of process 2 is 5 The turn around time of process 3 is 25 The wait time of process 3 is 18 The turn around time of process 4 is 37 The wait time of process 4 is 22 The average turn around time is 25.5 The average wait time is 16.25 */