What is collection sort in java?
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How hashmap increases its size in java?
What is the platform?
What is the purpose of void?
Write a program to reverse array in place?
Explain about join() method?
take any 4 input numbers. like 2345.. wanted out put is All 16 combinations of the number 2345.. for example- taking input as 4565 output- 5654 4556 4655..
which of tha following is not a thread safe class? a) ArrayList b)Vector c)HashTable d)None
'A class is a template for an object' explain this statement.
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why we need this (1.object,2.class,3.data hiding,4.encapsulation,5.abstraction,6. polymorphism,7.inheritance)
What is difference between string and new string?
How to make class immutable
Explain restrictions for using anonymous inner classes?