Core JAVA Interview Questions (Asked in Investment Banks)
Core JAVA Interview Questions (Asked in Investment Banks)
How does substring () inside String works?
What is a classloader?
How is the creation of a String using new() different from that of a literal?
What is difference between Executor.submit() and Executer.execute() method ?
What do you understand by Java Memory Model?
How to make a class Immutable? What purpose does it solve?
Can you use HashMap in the multi-threaded environment? What can be the problem?
Can you write a critical section code for the singleton?
What is Singleton? is it better to make the whole method synchronized or only the critical section synchronized?
How do you avoid deadlock in Java?
How can you avoid serialization in the child class if the base class is implementing the Serializable interface?
What is the ConcurrentHashMap in Java and do you implement it?
Explain the FailFast iterator and FailSafe iterator along with examples for each.
What is the difference between Checked Exception and Unchecked Exception?
What is the difference between factory and abstract factory pattern?
What is marker interface?
When Finally block doesn’t get executed?
How does Garbage collection in Java works?
Difference between ClassNotFound vs NoClassDefError?
How to break Singleton?
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