Java Interview Topics

Here’s a list of common topics I’ve encountered on technical interviews pertaining to Java:

  • inheritance
  • polymorphism
  • multi-threading (locks)
  • interfaces
  • pass by reference/pass by value/pass by pointer
  • data structures/algorithms – eg: return top N duplicate results from large data set
  • set vs list
  • object vs non-object data types
  • internationalization – eg: utf-8 vs utf-16

It is a good idea to be prepared to discuss as many of these as you have experience with.