What is meant by object oriented programming – oop?
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Why we use protected in java?
what is synchronization and why is it important? : Java thread
What is the transient keyword?
What does jre stand for?
What is the use of beaninfo?
what is the difference between String and StringBuffer classes?
Why do inner class cannot have static declaration except static nested class?
Where is stringbuffer stored?
What is volatile data type?
How to declare unique ArrayList ?
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 multithreading ???? How to stop multithrading in java????