What is immutable state?
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What do the thread?class methods run() and start() do?
What is a class ?
What is the use of optional ?
Is java a utf 8 string?
What is the list interface?
How does enum work in java?
What is an array length?
Can we have two methods in a class with the same name?
In how many ways we can do synchronization in java?
Why can't we use static class instead of singleton?
What is Mutex (Mutual Exclusion Object) ?
What is the difference between a choice and a list?