(a) Write a serializable Car class, a car object has registration, make, year and price.

(b) Implement a Java code to implement Bank Transfer method that ensures thread safe and lock free, the method accepts two account and amount to be transferred.

(c) The class Book, listed below, is thread safe but may deadlock. Explain why and re-write it so that deadlocks cannot occur.

class Book{ private String title;

private Lock lock = new ReentrantLock();

Book(String t){title = t;}

String title(){ lock.lock();

try{ return title;}

finally{lock.unlock();} }

void set(String nt){ lock.lock();

try{title = nt;}

finally{lock.unlock();} }

public boolean equals(Object p){ lock.lock();

try{ Book b = (Book)p; b.lock.lock();

try{ return(title.equals(b.title));}

finally{b.lock.unlock();} }

finally{lock.unlock();} }}