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Update Java 虚拟机.md

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栈大小设置为512M明显不合理，修改为2M
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@ -44,10 +44,10 @@
<div align="center"> <img src="pics/8442519f-0b4d-48f4-8229-56f984363c69.png" width="400px"> </div><br> <div align="center"> <img src="pics/8442519f-0b4d-48f4-8229-56f984363c69.png" width="400px"> </div><br>
可以通过 -Xss 这个虚拟机参数来指定每个线程的 Java 虚拟机栈内存大小：， 可以通过 -Xss 这个虚拟机参数来指定每个线程的 Java 虚拟机栈内存大小，默认JDK1.4中是256K，JDK1.5+中是1M:
```java ```java
java -Xss512M HackTheJava java -Xss2M HackTheJava
``` ```
该区域可能抛出以下异常： 该区域可能抛出以下异常：