ThinkerQAQ

HashMap

Java · 2 notes

  1. HashMap in JDK 7historical

    1. Questions: hand-written HashMap, why capacity is converted to a power of 2, resizing, hash collisions, head insertion, concurrent resize loops, null keys, and ConcurrentModificationException. 2. References.

  2. HashMap in JDK 8historical

    What HashMap is, usage, source analysis of construction, put, resize, treeification, get, containsKey, remove, containsValue, and differences from JDK 7.