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Questions and Answers
What is the purpose of the Vector class in Java?
What is the purpose of the Vector class in Java?
- To create resizable arrays similar to the ArrayList class (correct)
- To restrict the data types that can be used
- To store fixed-size arrays
- To limit the number of elements that can be stored
Which method in Vector class is used to add an element to vectors at a specific index?
Which method in Vector class is used to add an element to vectors at a specific index?
- add(index, element) (correct)
- insert(index, element)
- add(newElement)
- append(element)
What does the get(index) method of Vector class in Java do?
What does the get(index) method of Vector class in Java do?
- Adds an element to the end of the vector
- Finds the element at the specified index (correct)
- Clears all elements of the vector
- Removes an element at the specified index
How does the removeAll() method in Vector class differ from the clear() method?
How does the removeAll() method in Vector class differ from the clear() method?
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Which of the following methods is used to add all elements of one vector to another vector?
Which of the following methods is used to add all elements of one vector to another vector?
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What is the function of the remove(index) method in the Vector class?
What is the function of the remove(index) method in the Vector class?
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Which method is used to create a String type linked list in Java using Vector?
Which method is used to create a String type linked list in Java using Vector?
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In a vector with elements [A, B, C, D], what is the result of executing vector.add(2, 'E')?
In a vector with elements [A, B, C, D], what is the result of executing vector.add(2, 'E')?
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What output is expected after executing vector.remove(1) on a vector [X, Y, Z, W]?
What output is expected after executing vector.remove(1) on a vector [X, Y, Z, W]?
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Which method is used to access the first element of a vector?
Which method is used to access the first element of a vector?
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