What is the difference between arraylist and hashset in java?

1244

Give us the name of the list layoutmanagers in java?

960

Can we overload the constructors?

1043

What are the steps involved to create a bean?

1216

What is difference between overloading and overriding in java?

1082

Why does java not allow multiple public classes in a java file ?

4666

What is the difference between preemptive scheduling and time slicing in java programming?

1074

What is static method with example?

1256

How do you compare values in java?

1096

Can you run java program without main method?

1117

How are observer and observable used in java programming?

1080

What are the advantages of unicode?

1057

How does compareto work in java?

1097

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)

1868

What is class and object in java?

1063