public class String3   
{
	public static void main ( String [] args )   
	{
		String emptyString = new String();
		System.out.println ( emptyString );

		String aGreeting;
		aGreeting = new String("Hello world");
		System.out.println ( aGreeting );

		aGreeting = "Hello world 2";
		System.out.println ( aGreeting );

		String anotherGreeting = new String ( aGreeting );
		System.out.println ( anotherGreeting );
	}
}