What is a boolean in java?
Why runnable interface is used in java?
what is the diffrences between platform independent and portable
how to handle exceptions in ejb?
What are the advantages of assembly language?
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)
Is java a super set of javascript?
how can you retrive information from database by using hashmap/arraylist ,plz explain with example briefly?
What is singleton class and how can we make a class singleton?
Who developed java?
What is the private method modifier?
How do you override a variable in java?
what is wrapper class and its uses?