Removing All Elements : ArrayList « Collections « Java Tutorial

1. Java Tutorial
2. Collections
3. ArrayList

The simplest removal method, clear(), is the one that clears all of the elements from the list.

You will get an UnsupportedOperationException if the list is read-only.

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

public class MainClass {
  public static void main(String args[]) throws Exception {

    List list = new ArrayList();
    list.add("A");
    list.add("B");
    list.add("C");
    list.clear();

    System.out.println(list);
  }
}