Can we create our own wrapper class in java?
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What is callablestatement? How you can call stored procedure to pass in parameter?
Why do we use return statement?
How do you replace all in word?
What a static class can contains?
What is boolean in java?
What is the need to implement Serializable interface (with no methods) for objects which are to be serialized ? We can write our own functionality which writes objects to streams then why we need to implement and tell JVM that which objects can be serialized.
What is the major drawback of internal iteration over external iteration?
what is the use of StringBuffer?
Can an integer be null java?
What is equlas() and hashcode() contract in java? Where does it used?
What is meant by constructor?
What is deserialization and how do we do deserialization?