<dependency> <groupId>org.realityforge.arez</groupId> <artifactId>arez</artifactId> <version>1.0.0</version> </dependency> import org.realityforge.arez.annotations.ArezComponent; import org.realityforge.arez.annotations.Action; import org.realityforge.arez.annotations.Observable; @ArezComponent public class User { private String name; @Observable public String getName() { return name; } @Action public void setName(String name) { this.name = name; } @Action public void greet() { System.out.println("Hello, " + name + "!"); } }