What is the format specifier?
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Why is stringbuffer not immutable?
What is meant by class loader? How many types are there?
Can you sort a list in java?
Which programming language is best in future?
What are aggregate functions explain with examples?
What is meant by javabeans?
Name the methods in mouse listeners ?
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)
How do you create an array in java?
Why do we need array in java?
What are null interfaces in JAVA ? and give me some examples?
can you program for reverse string?