Java

Comparison of ArrayList and LinkedList, Vector and ArrayList, and SynchronizedList and Vector.

Synchronized Map wrappers, compound-operation atomicity, iteration locking, and concurrent alternatives.

What TreeSet is, usage, constructor, fields, other methods, and summary.

Comparison of StringBuilder, StringBuffer, and String.

1. What It Is: a thread-safe list. 2. Usage. 3. Source analysis: synchronizedList, SynchronizedList construction, mutex initialization, and synchronized method delegation.

What TreeMap is, usage, and source analysis of constructors, put, get, containsKey, and remove.

What Vector is, usage, source analysis, synchronization, and thread-safety limitations of compound operations.

fail-fast and fail-safe, Java iterator design, examples, implementation analysis, and summary.

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.

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