What is encapsulation in java?
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Difference between Linked list and Queue?
Write a java program to get a string of words and print the numbers of each word count in descending order
Is hashmap thread safe?
What environment variables do I need to set on my machine in order to be able to run java programs?
Can a class be declared as static?
difference between arraylist and linkedlist otherthan performance
How do you create immutable object in java?
What does opcode mean?
What is null mean in java?
Where are the local variables stored?
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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Explain restrictions on using enum?