What’s the difference between constructors and other methods?

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What is the diffrence between inner class and nested class?

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What is the use of System class?

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Explain jvm, jre, and jdk?

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What releases of Java technology are currently available? What do they contain?

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List methods available in Java Queue interface

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Does java allow overriding static methods ?

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how many access specifiers are available in java

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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)

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what is difference between excute query ()and execute update ()?

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Hi friends, i am new to java. can you explain how java is secured.

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Explain about the interpreter in java?

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