diff --git a/docs/java/collection/copyonwritearraylist-source-code.md b/docs/java/collection/copyonwritearraylist-source-code.md
index 3686f375ab9..e05d3e78959 100644
--- a/docs/java/collection/copyonwritearraylist-source-code.md
+++ b/docs/java/collection/copyonwritearraylist-source-code.md
@@ -311,6 +311,10 @@ System.out.println("列表清空后为：" + list);
 输出：
 
 ```plain
+初始列表：[Java, Python, C++]
+列表第二个元素为：Python
+删除结果：true
+列表删除元素后为：[Java, Python]
 列表更新后为：[Java, Golang]
 列表插入元素后为：[PHP, Java, Golang]
 列表大小为：3
diff --git a/docs/java/collection/delayqueue-source-code.md b/docs/java/collection/delayqueue-source-code.md
index d03129e81c7..37fadfbbbed 100644
--- a/docs/java/collection/delayqueue-source-code.md
+++ b/docs/java/collection/delayqueue-source-code.md
@@ -217,7 +217,7 @@ public boolean offer(E e) {
 
 ![](https://oss.javaguide.cn/github/javaguide/java/collection/delayqueue-take-1.png)
 
-注意，调用 `await` 之后 t1 就会释放 `lcok` 锁，假如 `DelayQueue` 持续为空，那么 t2、t3 也会像 t1 一样执行相同的逻辑并进入 `conditionWaiter` 队列中。
+注意，调用 `await` 之后 t1 就会释放 `lock` 锁，假如 `DelayQueue` 持续为空，那么 t2、t3 也会像 t1 一样执行相同的逻辑并进入 `conditionWaiter` 队列中。
 
 ![](https://oss.javaguide.cn/github/javaguide/java/collection/delayqueue-take-2.png)
 
diff --git a/docs/java/collection/linkedlist-source-code.md b/docs/java/collection/linkedlist-source-code.md
index 6af5aad7b19..6f024f4ff29 100644
--- a/docs/java/collection/linkedlist-source-code.md
+++ b/docs/java/collection/linkedlist-source-code.md
@@ -512,6 +512,8 @@ System.out.println("清空后的链表：" + list);
 输出：
 
 ```plain
+链表内容：[apple, banana, pear]
+链表内容：[apple, orange, banana, pear]
 索引为 2 的元素：banana
 链表内容：[apple, orange, banana, grape]
 链表内容：[orange, banana, grape]