> add-book 978-0134685991|Effective Java|Joshua Bloch|2
Added book: Effective Java (2 copies)
> add-book 978-0596009205|Head First Java|Kathy Sierra|1
Added book: Head First Java (1 copy)
> add-book 978-0134685991|Effective Java|Joshua Bloch|2
ERROR: ISBN 978-0134685991 already exists
> add-member Asha
Added member #1: Asha
> add-member Ravi
Added member #2: Ravi
> borrow 978-0596009205 1 2026-11-01
Loan #1: Asha borrowed 'Head First Java', due 2026-11-15
> borrow 978-0596009205 2 2026-11-01
ERROR: no copies of 'Head First Java' are available
> borrow 978-0134685991 1 2026-11-01
Loan #2: Asha borrowed 'Effective Java', due 2026-11-15
> report
  Effective Java by Joshua Bloch: 1 available
  Head First Java by Kathy Sierra: 0 available
  ON LOAN #1: 'Head First Java' -> Asha, due 2026-11-15
  ON LOAN #2: 'Effective Java' -> Asha, due 2026-11-15
> return 1 2026-11-20
Loan #1 returned on 2026-11-20, fine Rs 10
> return 1 2026-11-21
ERROR: loan #1 was already returned on 2026-11-20
> borrow 978-0596009205 2 2026-11-21
Loan #3: Ravi borrowed 'Head First Java', due 2026-12-05
> report
  Effective Java by Joshua Bloch: 1 available
  Head First Java by Kathy Sierra: 0 available
  ON LOAN #2: 'Effective Java' -> Asha, due 2026-11-15
  ON LOAN #3: 'Head First Java' -> Ravi, due 2026-12-05
> quit