day20
.....\Consumer.class
.....\Consumer.java
.....\pm
.....\..\FileStreamTest.class
.....\..\FileStreamTest.java
.....\..\MyDir.class
.....\..\MyDir.java
.....\Producer.class
.....\Producer.java
.....\Store.class
.....\Store.java
.....\Test.class
.....\Test.java
abc.txt
def.txt