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Q1) What is a Thread? Q2) What is difference between a thread and a process? Q3) What are the advantages or usage of threads? Q4) What are the two ways of creating thread? Q5) What are the different states of a thread's lifecycle? Q6) What is use of synchronized keyword? Q7) What is the difference when the synchronized keyword is applied to a static method or to a non static method? Q8) What is a volatile keyword? Q9) What is the difference between yield() and sleep()? Q10) What is the difference between wait() and sleep()?