What is the format of Inner Class after it compiled?
how can we synchronize Hash map?
Is Constructor possible in abstract class in java ?
Explain purpose of sleep() method in java?
Can we declare variables inside a method as Final Variables?
What are inbuilt functions in java?
How TreeMap sorts the objects inside it?? suppose if have include one employee object and one car object. On what basis it will sort?
What is an object's lock and which object's have locks in java programming?
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 the difference(or similarity if there are some) between object and a variable?
What is the class in java?
class A{ some variables; public void a()throws Excepion1,Exception2{....} } class B extends A{ variables... public void a()throws E2,E3{.....} } Qns: here override of methods occurs or not,ore else wil give any compilation error or run properly..plz tell me briefly whts happening with the above codes....
Why we use static and synchronized in method for single thread model example: public static synchronized add(){}