List size and empty flag

ReturnMethodSummary
booleanisEmpty()Returns true if this list contains no elements.
intsize()Returns the number of elements in this list.

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

public class Main {
  public static void main(String[] args) {
    List list = new ArrayList();

    list.add("1");
    list.add("2");
    list.add("3");

    list.add("java2s.com");

    System.out.println(list);

    System.out.println(list.isEmpty());
    System.out.println(list.size());


  }
}

The output:


[1, 2, 3, java2s.com]
false
4
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