ListUtils.java

public final class ListUtils {


  
  private ListUtils() {
  }
  

 
  public static <T> T getFirst( final List<T> list ) {
    return getFirst( list, null );
  }


  public static <T> T getLast( final List<T> list ) {
    return getLast( list, null );
  }


  private static <T> T getFirst( final List<T> list, final T t ) {
    return isEmpty( list ) ? t : list.get( 0 );
  }


  private static <T> T getLast( final List<T> list, final T t ) {
    return isEmpty( list ) ? t : list.get( list.size() - 1 );
  }
  
  public static <T> boolean isEmpty( final List<T> list ) {
    return list == null || list.isEmpty();
  }
  
   public static <T> boolean isNotEmpty( final List<T> list ) {
    return list != null && !list.isEmpty();
  }
}