如何从groovy覆盖java方法

// Maven<dependency>
 <groupId>org.codehaus.groovy</groupId>
 <artifactId>groovy-all</artifactId>
 <version>3.0.8</version>
</dependency>

// Gradle
implementation 'org.codehaus.groovy:groovy-all:3.0.8'

public class MyClass {
  public String myMethod() {
    return "Java method";
  }
}

class MyGroovyClass extends MyClass {
  String myMethod() {
    return "Groovy method"
  }
}

public class Main {
  public static void main(String[] args) {
    MyClass myClass = new MyGroovyClass();
    System.out.println(myClass.myMethod());
  }
}