What are the restriction imposed on a static method or a static block of code?
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An inner class can actually be a subclass of the outer class? a. true b. false
What are static variables and functions?
What is the differences between heap and stack memory in java? Explain
what are the boundaries of jdk and jre?
What is the advantage of preparedstatement over statement?
How java is similar to c?
Which class is the immediate superclass of the Container class?
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 steps are taken when the OS shifts from one-thread execution to another?
Why is it called buffering?
When you say String is immutable, what do you mean by that? Say I have String s = "Ness" s= s+"Technologies"; What will happen? If the value gets appended, then what is the meaning of immutable here?
Is arraylist sorted in java?