What is hashtable and explain features of hashtable?
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How do you replace a string in java?
What is n in java?
What is an object’s lock and which object’s have locks?
Why is singleton not thread safe?
Can we serialize static variables in java?
Why does java have two ways to create child threads?
What is JDK? Mention the variants of JDK?
Why non nested classes in java are not having marked as protected access specifier
How do listeners work?
Explain the difference between an object-oriented programming language and object-based programming language?
Can a abstract class be declared final?
Can you call one constructor from another if a class has multiple constructors?