What are the basic control structures?
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what are the disadvantages of indexes in oracle?
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why to use transient variables when static variables can be used for Serialization
Differentiate between static and non-static methods in java.
How does compareto method work?
What do you mean by checked exceptions?
What is the exception hierarchy in java?
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 method reference in java 8?
What is lifetime variable?
What is the difference between this() and super() in java?
What is the static method?
What are the differences between path and classpath variables?