What is meant by singleton class?
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How will you reverse a singly-link list?
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What is number data type?
Explain about the performance aspects of core java?
Explain about doubly linked list
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What is the difference between a field variable and a local variable?
How many return statement are allowed in a function?
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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Nullpointer exception is a very common exception. Why is it not made as a checked exception?
What is maximum size of arraylist in java?
which one is more efficient int x; 1. if(x==null) 2.if(null==x) state which one either 1 or 2?
What is the meaning of flag day?
why top level class could not be static
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