Notes

import java.util.*;

public class LeakyBucket
{
int I, B, N;
int dt[];
int t, p, bs;
boolean inCtrl = true;
boolean outCtrl = true;
void read()
{
Scanner sc = new Scanner(System.in);
System.out.println("Enter the value of I (size of packet in bytes)");
I = sc.nextInt();
System.out.println("Enter the Bucket Size");
B = sc.nextInt();
System.out.println("Enter number of packets of size I to transfer");
N = sc.nextInt();
dt = new int[N];
System.out.println("Enter the arrival time (in seconds) for all to packets in acending order");
for(int i = 0; i < N; i++)
dt[i] = sc.nextInt();
p = bs = 0;
t = 0;
sc.close();
}
void insert()
{
if(p < N)
{
if(dt[p] == t)
{
if(bs+I <= B)
{
bs+=I;
System.out.println("Packet recievd at t = " + t + ". " + bs + " Bytes still left in Bucket");
}
else
System.out.println("Bucket overflow. Packet Lost at t = " + t);
p++;
}
t++;
}
else
inCtrl = false;
}
void delete()
{
if(bs > 0)
{
bs--;
System.out.println("1 Byte Leaked.tt " + bs + " Bytes still left in Bucket");
}
else
{
System.out.println("Bucket is Empty. Waiting for Incoming Packets");
}
if(p == N && bs == 0)
outCtrl = false;
}
public static void main(String[] args)
{
LeakyBucket bkt = new LeakyBucket();
bkt.read();
InsertThread insThread = new InsertThread(bkt); //Call insert thread
DeleteThread delThread = new DeleteThread(bkt); //Call delete thread
}
}

class InsertThread implements Runnable
{
LeakyBucket bkt1;
public InsertThread(LeakyBucket bkt)
{
bkt1 = bkt;
Thread insThread = new Thread(this);
insThread.start();
}
public void run()
{
try
{
while(bkt1.inCtrl)
{
bkt1.insert();
Thread.sleep(1000);
}
}
catch(Exception e)
{
e.printStackTrace();
}
}
}

class DeleteThread implements Runnable
{
LeakyBucket bkt1; //bkt1 is an instance of Bucket class

public DeleteThread(LeakyBucket bkt)
{
this.bkt1 = bkt; //create a reference
Thread delThread = new Thread(this);
delThread.start();
}
public void run()
{
try
{
while(bkt1.outCtrl)
{
bkt1.delete();
Thread.sleep(1000);
}
System.out.println("nAll Packets Have Been Sent");
}
catch(Exception e)
{
e.printStackTrace();
}
}
}