From 7a24c6d91af6e7b36952649799cdcfcc34d1c789 Mon Sep 17 00:00:00 2001
From: RoyIronGrey <15665512229@163.com>
Date: 2019年11月19日 10:04:23 +0800
Subject: [PATCH] read to 12-Collections
---
 docs/book/12-Collections.md &#124; 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/docs/book/12-Collections.md b/docs/book/12-Collections.md
index 407dcd96..cea2798e 100644
--- a/docs/book/12-Collections.md
+++ b/docs/book/12-Collections.md
@@ -231,7 +231,7 @@ public class AddingGroups {
 import java.util.*;
 
 class Snow {}
-class Powder extends Snow {}
+class Powder extends Snow {} 
 class Light extends Powder {}
 class Heavy extends Powder {}
 class Crusty extends Snow {}
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