What is collections framework?
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What is a char in java?
Which non-unicode letter characters may be used as the first character of an identifier?
What is the epoch date?
Who found java?
What is an example of declaration?
What are advantages and disadvantages of OOPs?
How many ways can we create the string object?
What are the differences between getting and load method?
What is this keyword used for?
When we should use serialization?
Explain the difference between private, public, package and protected in java?
Can java hashmap have duplicate keys?