001    package stringtransformers;
002    
003    import cs101.io.Console;
004    
005    public class LazyEchoer extends StringTransformer
006    {
007      public LazyEchoer ()
008      {
009        super();
010      }
011    
012      private String previous = "";
013    
014      public String transform ( String input ) {
015        Console.println( this + " transforming " + input );
016        String temp = this.previous;
017        this.previous = input;
018        return temp;
019      }
020    }
021