What is the Vector.removeElementAt() method in Java?
The Vector class is a growable array of objects. The elements of Vector can be accessed using an integer index and the size of a Vector can be increased or decreased.
You can read more about the
Vectorclass here.
The removeElementAt() method of the Vector class can be used to remove the element at a specific index of the vector object. The elements after the index will be shifted one index downward. The size of the vector also decreases by 1.
Syntax
public void removeElementAt(int index)
Arguments
The only argument needed is the index of the element to be removed. The index should be positive and less than the size of the vector object. Otherwise, ArrayIndexOutOfBoundsException will be thrown.
index >= 0 && index < size()
This method doesn’t return any value.
Code
import java.util.Vector;class RemoveElementAt {public static void main( String args[] ) {// Creating VectorVector<Integer> vector = new Vector<>();// add elememtsvector.add(1);vector.add(2);vector.add(3);System.out.println("The Vector is: " + vector);vector.removeElementAt(1);System.out.println("\nAfter removing element at 1st index. The Vector is: " + vector);}}
Please click the
Runbutton on the code section above to see how theremoveElementAtmethod works.
Explanation
In the code above:
-
In line 5, we created a
vectorobject. -
In lines 8 to 10, we added three elements (
1,2,3) to the createdvectorobject. -
In line 14, we used the
removeElementAtmethod of thevectorobject to remove the element present at the first index.
