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Util Interview Questions And Answers
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which one is provide the just double memory if default memory full?
1.Vector
2.Array
3.Map
4.none
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10.10.11
Som |
Which of the following are collection classes?
1) Collection
2) Iterator
3) HashSet
4) Vector
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10.10.11
Som |
Which of the following are true about the Collection interface?
1) The Vector class has been modified to implement Collection
2) The Collection interface offers individual methods and Bulk methods such as addAll
3) The Collection interface is backwardly compatible and all methods are available within the JDK 1.1 classes
4) The collection classes make it unnecessary to use arrays
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10.10.11
Som |
Which of the following are true?
1) The Set interface is designed to ensure that implementing classes have unique members
2) Classes that implement the List interface may not contain duplicate elements
3) The Set interface is designed for storing records returned from a database query
4) The Map Interface is not part of the Collection Framework
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10.10.11
Som |
Which of the following are true?
1) The elements of a Collection class can be ordered by using the sort method of the Collection interface
2) You can create an ordered Collection by instantiating a class that implements the List interface
3) The Collection interface sort method takes parameters of A or D to change the sort order, Ascending/Descending
4) The elements of a Collection class can be ordered by using the order method of the Collection interface
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10.10.11
Som |
You wish to store a small amount of data and make it available for rapid access. You do not have a need for the data to be sorted, uniqueness is not an issue and the data will remain fairly static Which data structure might be most suitable for this requirement?
1) TreeSet
2) HashMap
3) LinkedList
4) an array
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10.10.11
Som |
Which of the following are Collection classes?
1) ListBag
2) HashMap
3) Vector
4) SetList
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10.10.11
Som |
How can you remove an element from a Vector?
1) delete method
2) cancel method
3) clear method
4) remove method
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10.10.11
Som |
Default memory of store the value in Vector is?
1. 8
2. 10
3. 16
4. none
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10.10.11
Som |
which one is help to sort the collection element?
1.Collections.sort(list)
2.collections.sort(list)
3.Collections.Sort(list)
4.none
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10.10.11
Som |
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