Java links

• Joins
• http://dwhlaureate.blogspot.in/2012/08/joins-in-oracle.html
• http://blog.codinghorror.com/a-visual-explanation-of-sql-joins/
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• TDD
• http://vimeo.com/68375232

•  Threads
• http://zeroturnaround.com/rebellabs/flavors-of-concurrency-in-java-threads-executors-forkjoin-and-actors/
• Thread runnable
• Executor
• Threadpool
• Concurrent apis
• Latch
• Cyclic barrier
• deadlocks
• producer consumer

•  Collections
• Hash maps
• Sets
• Lists
• http://math.hws.edu/javanotes/c10/s4.html
• Concuerrent Collections
• http://www.ibm.com/developerworks/java/library/j-jtp07233/index.html
• Comparator , Comparable 

• Method overlaoding and overriding
• Exceptions
• Return types 

• Generics
• Type erasure
• Equals hash code

• Design Patterns
•     singleton
•     factory
•     Abstract Factory
•      

• String
•     Intern
•     equals , ==

• Spring
•      DI
•      IOC

• java 5
•      Generics
•      Enhanced for Loop
•      Autoboxing/Unboxing
•      Annotations

• Java 6

• Java 7
•      

• Java 8
•      Lambda
•      functional interface

• God: Abstract SuperClass
•     http://stackoverflow.com/questions/1757363/java-hashmap-performance-optimization-alternative
•     http://java-performance.com/
•     http://www.javagyan.com/useful-tips    

• HastSet:
•     http://netjs.blogspot.in/2015/09/how-hashset-works-internally-in-java.html
•     http://www.jusfortechies.com/java/core-java/inside-set.php

• HashMap
•     http://javarticles.com/2012/11/hashmap-faq.html
• LinkedHashMap with doubly linked list
•     http://www.javamadesoeasy.com/2015/02/linkedhashmap-custom-implementation.html
•     http://javarticles.com/2012/06/linkedhashmap.html
•     qa: http://javahungry.blogspot.com/2015/08/how-linkedhashmap-works-internally-in-java.html

• ConcurrentHashMap:
•     http://javarticles.com/2012/06/concurrenthashmap.html

• 5 things series :
•     http://www.ibm.com/developerworks/views/java/libraryview.jsp?search_by=5+things+you+did   

• Trie
  
  • http://www.toptal.com/java/the-trie-a-neglected-data-structure
• BST
•  http://coding-interviewq.blogspot.in/2012/12/a-comprehensive-list-of-all-problems-on.html