Compressed a String : Implement a method to perform basic string compression using the counts of repeated characters.
Collections: Contains programs related list Iterator, Iterator, HashMap, TreeMap, Set, TreeSet etc.
Comparator and Comparable: Program related to comparator and comparable
Externalizable: Program on how to use Externalizable
Multithreading: Program on how to use CountDownLatch, FutureTask Class, Future, callable, Producer Consumer problem, Semaphore, ThreadPool, Runnable interface
ReflectionApi: Program on how to use reflection API methods.