Add Java example for accessing application context

Updated README.md to include a Java example for accessing the application context using `ContextProvider.getContext()`. This complements the existing Kotlin example and provides clarity for Java developers.

Author: kdroidFilter

README.md

@@ -29,13 +29,16 @@ implementation("io.github.kdroidfilter:androidcontextprovider:1.0.1")
 
 2. **Getting the Context**
 
-   You can access the application context (not an activity context) from anywhere in your app like this:
-
+   You can access the application context (not an activity context) from anywhere in your app like this: 
    ```kotlin
    val context = ContextProvider.getContext()
    // Use the context as needed
    ```
-
+   or in Java : 
+   ```java
+   Context context = ContextProvider.getContext();
+   // Use the context as needed
+   ```
 ### Important Notes
 
 - **Automatic Initialization**: The `ContextProvider` is initialized automatically via `ContentProvider`, eliminating the need for manual setup.