Unsafe类方法详解

淩亂°似流年 2023-10-06 08:15 33阅读 0赞

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> jdk11.0可以直接getUnsafe()获取到，jdk8是return null:

jdk11：

![20200507122825189.png][]

jdk1.8：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 1][]

> 分配内存的方法：相当于C语言中的memoryAllocation分配内存的方法。C释放内存的方法free()

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2E3NzIzMDQ0MTk_size_16_color_FFFFFF_t_70 2][]

<table style="width:500px;"> 
 <tbody> 
  <tr> 
   <td><strong>语言</strong></td> 
   <td><strong>分配内存</strong></td> 
   <td><strong>释放内存</strong></td> 
  </tr> 
  <tr> 
   <td>C</td> 
   <td>memoryAllocation()</td> 
   <td>free()</td> 
  </tr> 
  <tr> 
   <td>C++</td> 
   <td>new</td> 
   <td>delete</td> 
  </tr> 
 </tbody> 
</table>

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[20200507122825189.png]: https://img-blog.csdnimg.cn/20200507122825189.png
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