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Introduction: This article aims to introduce the relevant usage of synchronized, ReentrantLock, and Condition in Java. Locking with Synchronized Synchronized can be applied to instance methods, static methods, and code blocks. When used to modify a code block, it can either lock on a specific object or on a class (.class). Synchronized is a Non-Fair Lock The following code utilizes synchronized to lock on a variable accessible by multiple threads, achieving the orderly printing of numbers....