Why put method is idempotent?
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What things should be kept in mind while creating your own exceptions in java?
What is serializable interface?
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Which are the two subclasses under exception class?
Can an abstract class be a final class?
What is null mean in java?
Features of JAVA ? In which version of java synchronizedXXX() methods are included in Collections class.
What is basic syntax?
Can we overload destructor in java?
What is string pool?
Define jre i.e. Java runtime environment?
4.1 Supply contracts (in the form of comments specifying pre- and post conditions) for the enqueue() method of the LinkedQueue class given in the Appendix. (2) 4.2 Let Thing be a class which is capable of cloning objects, and consider the code fragment: Thing thing1 = new Thing(); //(1) Thing thing2 = thing1; //(2) Thing thing3 = (Thing) thing1.clone(); //(3) Explain how the objects thing2 and thing3 differ from each other after execution of the statements. (
If A Class Is Declared Without Any Access Modifiers, Where May The Class Be Accessed?