Threads

Question 1

What is multithreading?

Answer 1

It is the process of executing multiple threads simultaneously to maximize the utilization of the CPU

Question 2

In what ways can you create a thread?

Answer 2

Create a thread by extending a class from the Thread class or implementing the runnable interface

Question 3

List the methods of the Thread class and Runnable interface

Answer 3

run()
start()
sleep()
join()
getName()
setName()
setPriority()
getPriority()
stop()
resume()

Question 4

Explain the lifecycle of a thread

Answer 4

New Thread - When the thread is created but not started
Runnable - Runnable state after invocation
Running - Doing the task it was assigned
Non-Runnable/Blocked
Terminated - When the thread has completed its task

Question 5

What is a deadlock?

Answer 5

Deadlock occurs when two threads are waiting on a locked objects from each other and can never continue

Question 6

What is the synchronized keyword?

Answer 6

It is a keyword that allows an object to tell threads to access it one at a time