Created by Google, Flutter is an open-source mobile app development framework used for developing cross-platform apps for both Android and iOS. With qualities like appealing visuals, cost-effectiveness, and faster development, Flutter is dominating the mobile app development market greatly.
However, it is also a debatable discussion if Flutter is going to replace Java or not. Meanwhile, there are reasons which are making Flutter popular as compared to Java.
Productivity
Cross-platform performance
Easy to build High performing apps with it
Flutter takes a different approach by using Dart.