What are the different collection views provided by maps?
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what is object deep copy and shallow copy and why it is required?
What is string in java is it a data type?
What is method in research paper?
design an lru cache in java?
How do you get length in java?
What is final keyword in java? Give an example.
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)
suppose we have an interface & that interface contains five methods. if a class implements that interface then we have to bound that to give tha definition of all five methods in that class. If we declare that class as abstract then can we call only two methods to give the deinition of that method & i don't want to give the definition of all the methods? can it possible
What is the difference between array and arraylist? what is the difference between arraylist and linkedlist?
Name the method of a Container that can be used to cause a container to be laid out and redisplayed?
What is externalizable interface?
What are the features of junit?