Dúvida - Scanner

import java.util.Scanner;
public class meuTeste {
   public static void main( String[] args ) {
      String s = " 1 2 3 true false";
      
      Scanner sc1 = new Scanner( s );
      Scanner sc2 = new Scanner( s );
      
      while( sc1.hasNext() ) System.out.println( sc1.next() );

      Systm.out.println( "\n\n\nsc2\n\n" );

      while( sc2.hasNextBoolean() ) System.out.println( sc2.nextBoolean() );


      Systm.out.println( "\nFim" );

   }
}