As of my last knowledge update in January 2022, Flutter has gained popularity as a framework for cross-platform mobile app development. Flutter allows developers to write code once and deploy it on both Android and iOS platforms. It uses the Dart programming language and is backed by Google.

While Flutter has become a popular choice for building mobile apps, it’s important to note that Java has been a longstanding and foundational language for Android development. Java, along with Kotlin (which has gained official support from Google for Android development), remains widely used in the Android development ecosystem.

Whether Flutter will replace Java for Android app development depends on various factors, including developer preferences, project requirements, and industry trends. As of my last update, Flutter was gaining traction, but Java and Kotlin continued to be significant players in Android development.

Keep in mind that the technology landscape evolves, and new developments may have occurred since my last update. To get the most current information, I recommend checking the latest sources and community discussions on Android development trends.

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