What do you understand by downcasting?
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Can optional be null?
What are jpa repositories?
What is an actionevent in java?
Explain the inheritance principle.
Can the main method be declared final?
What is map and flatmap?
How to reverse the singly linked list(In Node data members are(int data,int pointerTONext))
What is the difference between deep copy and shallow copy in java
Which is faster c++ or java?
What are the risks in java security? : java security
Explain the common use of ejb?
what is constructer?what are the type of constructer with example.