Name: Understand Java HashMap with a puzzle
Uploaded: 2023-09-27T16:19:36+00:00
Duration: 8 min 27 s
Description: How well do you know Java's HashMap? This puzzle defines a POJO class, uses it in a HashMap, and asks 5 true/false questions. I've been asking this question in interviews since 2018. Almost nobody has

10 months ago

java puzzle java puzzler

How well do you know Java's HashMap? This puzzle defines a POJO class, uses it in a HashMap, and asks 5 true/false questions. I've been asking this question in interviews since 2018. Almost nobody has answered all correctly. Will you?

00:00 Introduction
00:37 The Person class
01:20 The puzzles
02:58 Explanation in brief
04:04 HashMap illustration and workings
05:24 Detailed explanation
06:51 Lessons

The entire video was typed using Robotonous available at https://github.com/lvijay/robotonous.
The voiceover was made using the Festival Speech Synthesis System: https://www.cstr.ed.ac.uk/projects/festival/ compiled for the Mac using GNU Make.

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