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Fix typo in JVM garbage collection notes #1436

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Fix typo in JVM garbage collection notes #1436

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2 changes: 1 addition & 1 deletion notes/Java 虚拟机.md
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Expand Up @@ -233,7 +233,7 @@ obj = null;

在标记阶段，程序会检查每个对象是否为活动对象，如果是活动对象，则程序会在对象头部打上标记。

在清除阶段，会进行对象回收并取消标志位，另外，还会判断回收后的分块与前一个空闲分块是否连续，若连续，会合并这两个分块。回收对象就是把对象作为分块，连接到被称为 “空闲链表” 的单向链表，之后进行分配时只需要遍历这个空闲链表，就可以找到分块。
在清除阶段，会进行对象回收并取消标志位，另外，还会判断回收后的分块与前一个空闲分块是否连续，若连续，会合并这两个分块。回收对象后把空闲分块作为对象，连接到被称为 “空闲链表” 的单向链表，之后进行分配时只需要遍历这个空闲链表，就可以找到分块。

在分配时，程序会搜索空闲链表寻找空间大于等于新对象大小 size 的块 block。如果它找到的块等于 size，会直接返回这个分块；如果找到的块大于 size，会将块分割成大小为 size 与 (block - size) 的两部分，返回大小为 size 的分块，并把大小为 (block - size) 的块返回给空闲链表。

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