Flutter is a relatively new cross-platform app development framework that is quickly gaining popularity. It is still too early to say whether Flutter will completely replace Java for Android app development, but it is certainly a viable option for many developers.

Here are some of the advantages of using Flutter for Android app development:

• Cross-platform development: Flutter allows you to develop native-looking apps for both Android and iOS using a single codebase. This can save you a lot of time and effort, especially if you are developing an app for both platforms.
• Fast development: Flutter is known for its fast development cycles. You can build and test your app quickly and easily, which can help you to get your app to market faster.
• Hot reload: Flutter’s hot reload feature allows you to see your changes reflected in your app immediately, without having to rebuild and deploy the app. This can make development much more efficient.
• Large community: Flutter has a large and growing community of developers. This means that there are a lot of resources available to help you learn Flutter and develop apps.

However, there are also some disadvantages to using Flutter for Android app development:

• Newer framework: Flutter is a newer framework than Java, which means that there is less documentation and community support available.
• Larger app size: Flutter apps are typically larger than Java apps. This is because Flutter includes its own rendering engine and widgets.
• Performance: In some cases, Flutter apps may not perform as well as Java apps. This is especially true for complex apps with a lot of graphics or animation.