Add explanation for lock in synchronized method option

kahgoh · kahgoh · commit 90247d6f892e · 2025-10-08T17:07:15.000+08:00
diff --git a/exercises/practice/bank-account/.approaches/synchronized-statements/content.md b/exercises/practice/bank-account/.approaches/synchronized-statements/content.md
@@ -93,7 +93,7 @@ int getBalance() throws BankAccountActionInvalidException {
 }
 ```
 
-This is the same as using a synchronized method.
+This is the same as using a [synchronized method][approach-synchronized-methods], which requires a lock on the same `this` object to run the method.
 For example:
 
 ```java

Original file line number	Diff line number	Diff line change
`@@ -93,7 +93,7 @@ int getBalance() throws BankAccountActionInvalidException {`
`93`	`93`	`}`
`94`	`94`	```
`95`	`95`
`96`		`-This is the same as using a synchronized method.`
	`96`	+This is the same as using a [synchronized method][approach-synchronized-methods], which requires a lock on the same `this` object to run the method.
`97`	`97`	`For example:`
`98`	`98`
`99`	`99`	```java