No, it is not possible . Dart and Java are different languages that both run in their own VM. You can however invoke java via the Process class. There is also a Java to Dart plugin that is in an experimental phase.
Read moreCan I use Java libraries in Android?
To use a Java library (JAR file) inside your Android project, you can simple copy the JAR file into the folder called libs in your application . *. jar files in this folder are included into the compile classpath via the default build. gradle file.
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