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