Update Java内存区域.md

Snailclimb · Snailclimb · commit 3f6eb7bfbe5e · 2019-11-17T13:46:47.000+08:00
diff --git a/docs/java/jvm/Java内存区域.md b/docs/java/jvm/Java内存区域.md
@@ -317,7 +317,7 @@ System.out.println(str2==str3);//false
 		  System.out.println(str3 == str5);//true
 		  System.out.println(str4 == str5);//false
 ```
-![](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-6/字符串拼接.png)
+![字符串拼接](https://my-blog-to-use.oss-cn-beijing.aliyuncs.com/2019-7/字符串拼接-常量池2.png)
 
 尽量避免多个字符串拼接，因为这样会重新创建对象。如果需要改变字符串的话，可以使用 StringBuilder 或者 StringBuffer。
 ### 4.2 String s1 = new String("abc");这句话创建了几个字符串对象？
