Java Programming for Complete Beginners - Java 16 - Step 06 - Implementing an Example with ConcurrentHashMap

The video tutorial discusses the importance of thread safety in programming and introduces the use of concurrent maps to achieve it. Initially, a character counting problem is implemented using a hash table, which is not thread-safe. The tutorial then introduces LongAdder for atomic operations and explains the limitations of non-thread-safe code. Finally, the video demonstrates how to use a ConcurrentHashMap and lambda expressions to ensure thread safety and atomic operations, replacing the previous code with a more efficient solution.

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