With this example we are going to demonstrate how to replace Vector elements using index. The Vector API provides methods for such operations. In short, to replace elements in a Vector using index you should:
- Create a new Vector.
- Populate the vector with elements, with
add(E e)API method of Vector. - Invoke
set(int index, E element)API method of Vector, with parameters the element to be replaced and its index. The method replaces the element in the specified index with the given element. - We can use
get(int index)API method to get the elements of the Vector and check if the element that was replaced exists in the Vector.
Let’s take a look at the code snippet that follows:
package com.javacodegeeks.snippets.core;
import java.util.Vector;
public class ReplaceElementVectorIndex {
public static void main(String[] args) {
// Create a Vector and populate it with elements
Vector vector = new Vector();
vector.add("element_1");
vector.add("element_2");
vector.add("element_3");
/*
Use Object set(int index, Object obj) operation to replace an element at
the specified index of Vector. It returns the element previously at
the specified position.
*/
vector.set(1,"element_4");
System.out.println("Elements in Vector :");
for(int i=0; i < vector.size(); i++)
System.out.println(vector.get(i));
}
}
Output:
Elements in Vector :
element_1
element_4
element_3
This was an example of how to replace Vector elements using index in Java.
