doc: Update java.md (#80)

2025-06-16 12:11:21 +08:00 · 2022-11-15 14:50:57 +08:00
parent 7b46142372
commit 0e0eb9c628
1 changed files with 6 additions and 0 deletions
--- a/docs/java.md
+++ b/docs/java.md
@ -782,6 +782,12 @@ try {
  System.out.println("always printed");
 }
 ```
+### util工具类
+```
+Collections
+Arrays
+Random
+```

 另见
 ---