What is data encapsulation?
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How to implement Hash Map?
What is the use of lambda functions?
Do I need to install jre if I have jdk?
Is lambda expression an object?
why i can not access private variable in other class?
What is serializable in java?
What is jpa implementation?
What is a java executable jar file?
What is cdi in java?
Why do we need framework in java?
What is the use of flatmap?
What is the need to declare main() method as static in Java?