Yes.
/* Program 1
Write out three lines of a poem.
The poem describes a single moment in time,
using 17 syllables.
*/
class Haiku
{
  public static void main ( String[] args )
  {
    System.out.println("On a withered branch" );
    System.out.println("A crow has just alighted:");
    System.out.println("Nightfall in autumn."); 
  }
}
With this style of comment,
everything between the two characters /* and the two chracters */
are ignored by the compiler.
The /  and the * must not have any character between them.
There can be many lines of comments
between the /* pair and the */ pair.
Why would you ever want to use comments to help a person understand your program?