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Program: How to copy vector to array?


Description:

You can copy all elements of a vector object to an array. By passing an array object to copyInto() method, you can copy content of a vector object to an array.


Code:
package com.java2novice.vector;

import java.util.Vector;

public class MyVectorArrayCopy {

	public static void main(String a[]){
		Vector<String> vct = new Vector<String>();
		vct.add("First");
		vct.add("Second");
		vct.add("Third");
		vct.add("Random");
		System.out.println("Actual vector:"+vct);
		String[] copyArr = new String[vct.size()];
		vct.copyInto(copyArr);
		System.out.println("Copied Array content:");
		for(String str:copyArr){
			System.out.println(str);
		}
	}
}

Output:
Actual vector:[First, Second, Third, Random]
Copied Array content:
First
Second
Third
Random
<< Previous Program | Next Program >>

List Of All Vector Sample Programs:

  1. Basic Vector Operations.
  2. How to read all elements in vector by using iterator?
  3. How to read all elements in vector by using Enumeration?
  4. How to copy or clone a vector?
  5. How to add all elements of a list to vector?
  6. How to delete all elements from my vector?
  7. How to find does vector contains all list elements or not?
  8. How to copy vector to array?
  9. How to get sub list from vector?
Knowledge Centre
When to use LinkedList or ArrayList?
Accessing elements are faster with ArrayList, because it is index based. But accessing is difficult with LinkedList. It is slow access. This is to access any element, you need to navigate through the elements one by one. But insertion and deletion is much faster with LinkedList, because if you know the node, just change the pointers before or after nodes. Insertion and deletion is slow with ArrayList, this is because, during these operations ArrayList need to adjust the indexes according to deletion or insetion if you are performing on middle indexes. Means, an ArrayList having 10 elements, if you are inserting at index 5, then you need to shift the indexes above 5 to one more.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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