Threads.md

Threads

A thread is a unit of program execution that runs independently from other threads. Java programs can consist of multiple threads of execution that behave as if they were running on independent CPUs.

• java.lang.Thread is the Thread class representing a thread, which you can extend and then override its run() method. Afterwards, you call start().
• java.lang.Runnable is a functional interface (meaning only one method) which you can implement and then override run(). Afterwards, you can pass the object to a Thread instance and run start().
• The synchronized keyword is a modifier that can be used to write blocks of code, methods, or other resources to protect it in a multithreaded environment.
• wait() and notify() or notifyAll() methods of java.lang.Object can be used to suspend or wake up threads.