The key to utilizing Java's multithreading features effectively is to think concurrently rather
than serially. For example, when you have two subsystems within a program that can execute
concurrently, make them individual threads. With the careful use of multithreading, you can
create very efficient programs. A word of caution is in order, however: If you create too many
threads, you can actually degrade the performance of your program rather than enhance it.
Remember, some overhead is associated with context switching. If you create too many threads,
more CPU time will be spent changing contexts than executing your program!
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