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FCFSS.java
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FCFSS.java
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package fcfss;
import java.util.ArrayList;
import java.util.Scanner;
class Process {
private final String name;
private final int arrivalTime;
private final int burstTime;
public Process(String name, int arrivalTime, int burstTime) {
this.name = name;
this.arrivalTime = arrivalTime;
this.burstTime = burstTime;
}
public String getName() {
return name;
}
public int getArrivalTime() {
return arrivalTime;
}
public int getBurstTime() {
return burstTime;
}
}
public class FCFSS {
public static void main(String[] args) {
ArrayList<Process> processes;
try (Scanner scanner = new Scanner(System.in)) {
System.out.print("Enter the number of processes: ");
int numProcesses = scanner.nextInt();
processes = new ArrayList<>();
for (int i = 1; i <= numProcesses; i++) {
System.out.print("Enter the arrival time of process P" + i + ": ");
int arrivalTime = scanner.nextInt();
System.out.print("Enter the burst time of process P" + i + ": ");
int burstTime = scanner.nextInt();
processes.add(new Process("P" + i, arrivalTime, burstTime));
}
}
// Sort processes based on arrival time
processes.sort((p1, p2) -> p1.getArrivalTime() - p2.getArrivalTime());
int currentTime = 0;
double totalTurnaroundTime = 0;
double totalWaitingTime = 0;
System.out.println("Process\t\tArrival Time\tBurst Time\tWaiting Time\tTurnaround Time");
for (Process process : processes) {
int waitingTime = currentTime - process.getArrivalTime();
if (waitingTime < 0) {
currentTime = process.getArrivalTime();
waitingTime = 0;
}
int turnaroundTime = waitingTime + process.getBurstTime();
totalTurnaroundTime += turnaroundTime;
totalWaitingTime += waitingTime;
System.out.println(process.getName() + "\t\t" + process.getArrivalTime() + "\t\t" + process.getBurstTime()
+ "\t\t" + waitingTime + "\t\t" + turnaroundTime);
currentTime += process.getBurstTime();
}
int totalProcesses = processes.size();
double averageTurnaroundTime = totalTurnaroundTime / totalProcesses;
double averageWaitingTime = totalWaitingTime / totalProcesses;
System.out.println("\nAverage Waiting Time: " + averageWaitingTime);
System.out.println("Average Turnaround Time: " + averageTurnaroundTime);
}
}