0: Zoe
1: Bart
2: Chris

Removing an Element

Frequently you wish to remove an element from a list. The Vector class has a method that will do this without leaving a hole in place of the deleted element:

removeElementAt(int index)  //  Deletes the element at index. Each element with an index 
                            //  greater than index is shifted downward to have an index 
                            //  one smaller than its previous value. 

The element at location index will be eliminated. Elements at locations index+1, index+2, ... , size()-1 will each be moved down one to fill in the gap. This is like pulling out a book from the middle of a stack of books.

 

import java.util.* ;
class VectorEg
{
  public static void main ( String[] args)
  {
    Vector names = new Vector( 10 );

    names.addElement( "Amy" );    
    names.addElement( "Bob" );
    names.addElement( "Chris" );  
    names.addElement( "Deb" );

    names.removeElementAt(2);

    for ( int j=0; j < names.size(); j++ )
      System.out.println( j + ": " + 
          names.elementAt(j) ); 

  }
}