Swift is used for developing software for Apple platforms (e.g. apps for iOS, macOS, etc.). Java on the other hand is universal. It can be used to write programs for the web, servers, Windows OS, Linux OS, Mac OS, Android OS, etc. Nevertheless, learning both languages is better .
Read moreIs Java easier than Swift?
Swift is easier as compared with Java . It was developed to make an easy programming language for their ecosystem. That is why Swift has easier syntax as compared with Java.
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