Improved description of finally (#22367)

* Improved description of finally

Added more examples for the finally block

* Grammatical changes

guide/english/java/finally-keyword/index.md

@@ -3,7 +3,7 @@ title: Finally
 ---
 
 ## finally
-The finally block always executes when the try block exits. This ensures that the finally block is executed even if an unexpected exception occurs. But finally is useful for more than just exception handling — it allows the programmer to avoid having cleanup code accidentally bypassed by a return, continue, or break. Putting cleanup code in a finally block is always a good practice, even when no exceptions are anticipated.
+The finally block always executes when the try block exits. This ensures that the finally block is executed even if an unexpected exception occurs. But finally is useful for more than just exception handling — it allows the programmer to avoid having cleanup code accidentally bypassed by a return, continue, or break. Putting cleanup code in a finally block is always a good practice, even when no exceptions are anticipated. It is also useful for closing connections in case of an unexpected exception, for example, it can close an open database connection if an exception is thrown during the try block.
 
 ***Example:***
 ```java
@@ -29,5 +29,15 @@ try {
    System.out.println("In finally block");
 }
 ```
+***Example***
+```
+try {
+    //Try to execute a query that can throws an exception
+    stmt.executeUpdate( "INSERT INTO MyTable( name ) VALUES ( 'my name' ) " );
+} finally {
+    //Close the DB connection even in case of problem
+    stmt.close();
+}
+```
 
 The above code works fine even though the catch statement is not used.