What collections you have worked on? Internal working of Hashmap?
What is meant by singleton class?
What is difference between variable declaration and definition?
Which package is used for pattern matching with regular expressions?
What does percent mean in java?
What is the common usage of serialization? What exceptions occur during serialization?
What is 32 bit float?
What is ternary operator in java?
Can we declare a constructor as final?
Why is stringbuffer faster than string?
Explain the scope or life time of class variables or static variables?
What is hotjava?
What is meant by call by reference?