What are java packages? What's the significance of packages?
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what do you mean by java annotations?
WAP to illustrate the use of interface
What are the object and class classes used for?
What are java methods?
What is immutability in java?
What is the difference between break and continue statements?
Can arraylist hold different types java?
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How to sort a vector elements that contains the user define class object? (Note: If Suppose consider, A Student class contain two data members. They are String studentName and int rollNo. I am creating Four objects for this class, each object contains students details like name and roll no. Now i am storing that objects in vector and if i retiving the elements from the vector means then it should be display in sorting order)
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What is the instance of an object?
What are the main uses of the super keyword?
How destructors are defined in java?