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Objects and Collections

Which of the following are true statements?

  1. The 

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Practice Objects and Collections –

Which of the following are true statements?

  1. The Iterator interface declares only three methods: hasNext, next and remove.
  2. The ListIterator interface extends both the List and Iterator interfaces.
  3. The ListIterator interface provides forward and backward iteration capabilities.
  4. The ListIterator interface provides the ability to modify the List during iteration.
  5. The ListIterator interface provides the ability to determine its position in the List.

Which three statements are true?

  1. The default constructor

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Practice Objects and Collections –

Which three statements are true?

  1. The default constructor initialises method variables.
  2. The default constructor has the same access as its class.
  3. The default constructor invokes the no-arg constructor of the superclass.
  4. If a class lacks a no-arg constructor, the compiler always creates a default constructor.
  5. The compiler creates a default constructor only when there are no other constructors for the class.
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