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VnV AT : M3(Java) - Day 4

Quiz by neelimap

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5 questions
Show answers
  • Q1
    Which interface provides the capability to store objects using a key-value pair ?
    java.util.Set
    java.util.List
    java.util.Collection
    java.util.Map
    30s
  • Q2
    Which of the following statement is false about HashMap class ?
    HashMap maintains order of its element.
    HashMap has key value pair type of storage.
    HashMap uses a hashtable to store the map.
    HashMap class is not synchronized.
    30s
  • Q3
    What is Collection in Java?
    none of these
    a group of objects
    a group of interfaces
    a group of classes
    30s
  • Q4
    Which of these is method for testing whether the specified element is a file or a directory?
    isFile()
    Isfile()
    isfile()
    IsFile()
    30s
  • Q5
    What does this code return ? try{ File f = new File("a.txt"); }catch(Exception e){ }catch(IOException io){ }
    compilation error
    none of these
    false
    true
    30s

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