Naive tail in Java (to keep up with basic skills)

NaiveTail.java

import java.io.BufferedReader;
import java.io.FileReader;

class NaiveTail{
    public static void main(String[] args) throws Exception{
        int size=new Integer(args[0]);
        String[] circularBuffer=new String[size];
        int i=0;
        BufferedReader in=new BufferedReader(new FileReader(args[1]));
	String line;
	while ((line=in.readLine())!=null){
           circularBuffer[i++] = line;
           i=i % size;
        }
        for(int j=0; j<size; j++){
           System.out.println(circularBuffer[(i+j) % size]);
        }
        if (args.length>2 && args[2].equals("f")){
		while (true){
			line=in.readLine();
			if (line != null) {
				System.out.println(line);
			}
		}
	}  
    }
}