1 package com.example.lambda;
 2 
 3 import java.util.List;
 4 import java.util.function.UnaryOperator;
 5 
 6 /**
 7  *
 8  * @author MikeW
 9  */
10 public class A08Unary {
11   
12   public static void main(String[] args){ 
13 
14     List<SalesTxn> tList = SalesTxn.createTxnList();
15     SalesTxn first = tList.get(0);
16         
17     UnaryOperator<String> unaryStr = 
18         s -> s.toUpperCase();
19     
20       System.out.println("== Upper Buyer");
21       System.out.println(
22           unaryStr.apply(first.getBuyer().getName()));
23   }
24 }
25