Collection: Object remove(int index) Removes the element at index. : List « Utility Classes « SCJP






  1. SCJP
  2. Utility Classes
  3. List
The index of each subsequent element is reduced by 1, so indices remain sequential.


import java.util.ArrayList;
import java.util.List;

public class MainClass {
  public static void main(String[] argv) {

    List<String> list = new ArrayList<String>();
    list.add("a");
    list.add("b");
    list.add("c");
    Object o = list.remove(0);
    System.out.println(o);

    System.out.println(list);
  }
}

a
[b, c]




8.13.List
8.13.1.A List keeps it elements in the order in which they were added.
8.13.2.List: void add(int index, Object x) Inserts x at index.
8.13.3.List: Object get(int index) Returns the element at index.
8.13.4.List: int indexOf(Object x) Returns the index of the first occurrence of x, or -1 if the List does not contain x.
8.13.5.Collection: Object remove(int index) Removes the element at index.
8.13.6.ListIterator extends the Iterator interface to support bidirectional iteration of lists.
8.13.7.Using Iterator for Lists
8.13.8.toArray() method