Java Multithreading

This document provides an overview of multi-threaded programming in Java. It discusses how to create threads that extend the Thread class or implement the Runnable interface. It describes how asynchronous thread execution can lead to unpredictable ordering. It also covers issues like data races that can occur from concurrent reads and writes to shared memory by multiple threads. The document introduces thread synchronization using locks to avoid data races and provides an example of deadlock that can occur from incorrect lock usage.