What is meant by data hiding/encapsulation?
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What is run-time class and system class? what is their purpose?
Explain different states of a thread in java?
What does singleton mean in java?
What does flag mean in java?
Can java hashmap have duplicate keys?
The class "Class" is belongs to which package?? a) java.lang b)java.lang.reflect c)java.util d)None
Is passing by reference faster?
What are the advantages of java over C++?
What is the replace tool?
Is a boolean variable?
Why null value is used in string?
What is an abstract class?