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What is bubble sort in java?
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give me the answer of this code class A extnds String This code we can write r not in Java? Explain?
What is Hierarchy of exception?
What is threaded programming and when is it used? : Java thread
What is static method with example?
What will happen if a thrown exception is not handled?
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What is a protected method?
Say you want to store the information about a number of pets in an array. Typical information that you could store for each pet (where relevant) would be • Breed of animal • Animal's name • Its birth date • Its sex • Whether it has been sterilised or not • When it is due for its next inoculation • When it last had its wings clipped For each type of pet (eg. dog, cat or bird) you would typically define a class to hold the relevant data. Note: You do not need to implement these classes. Just answer the following questions. 3.1.1 What would be the advantage of creating a superclass (eg. Pet) and declaring an array of Pet objects over simply using an array of Objects, storing each of the instances of the different pet classes (eg. Dog, Cat or Bird) in it? 3.1.2 Would you define Pet as a class or as an interface? Why? (2) (2)
What is the final variable?
What is Hash Code in Java?
why operator overloading is removed in java?
What does this() represent, and how is it used in Java?
where the static methods will live ,on stack ? can you explain brefly
Core Java 
