What is an object class?
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Why are lists ordered in java?
How does static modifier work?
What is sorting algorithm in java?
Differentiate between stringbuffer and stringbuilder in java.
why java main method is given as static method?
Differentiate constructor and a method and how are it be used?
What is hash code collision?
What is the use of inner class?
What is map and hashmap in java?
How to sort the elements in HashMap
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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Is nullpointerexception checked or unchecked?