Java Multithreading Interview Question and Answers

Java Multithreading Interview Question and Answers

Java Multi threading: Multi thread is a process to execute multiple threads simultaneously. Java supports single-thread as well as multi-thread operations. A single-thread program has a single entry point (the main () method) and a single exit point. A multi-thread program has an initial entry point (the main () method), followed by many entry and exit points, which are run concurrently with the main (). The term concurrency refers to doing multiple tasks at the same time. Multiprocessing and multithreading both are used to perform multitasking.

What is multithreading?

What is thread?

How can we create a Thread in Java?

What is difference between user Thread and daemon Thread?

What is context-switching in multi-threading?

What are the benefits of multi-threaded programming?

What are different states in life cycle of Thread?

What is the difference between Process and Thread?

What is the difference between preemptive scheduling and time slicing?

Is it possible to start a thread twice?

Can we call the run() method instead of start()?

How can we pause the execution of a Thread for specific time?

What is Thread Scheduler and Time Slicing?

How does thread communicate with each other?

How can we achieve thread safety in Java?

How to create daemon thread in Java?

What is ThreadLocal?

What is Java Thread Dump, How can we get Java Thread dump of a Program?

What is Thread Pool? How can we create Thread Pool in Java?

What is synchronization?

What is the purpose of Synchronized block?

What is static synchronization?