Java is better for: Large applications with lots of features and functionality that need to function across all platforms, including Android, iOS, Windows, or Linux . Java has mature libraries that support this type of application development well.
Read moreIs Flutter better than Java for Android?
Flutter is a Cross-platform framework that is faster while Java is a safer option for its strong team, documentation and continuously updated . Various other tools are also available for mobile, web, desktop application development but these two have an upper hand on the rest of the frameworks.
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