Java

• • collections

  • generics

  • inner classes

  • Threads

• classloader

Interesting Links

• Java Best Practises

  • Prefer lazy loading

  • private over public for instance variable

  • balance immutable vs performance [NOT TRUE]

  • interface over abstract

  • minimize use of local variables

  • use standard library instead of self code

  • data

    • primitive over class

    • use strings carefully

    • use clone to avoid data corruption.

• New in Java 7

  • WatchService

    • Object implements a WatchService interface to keep watch on Watchable objects [link]