Kotlin vs Java boiler-plate code

TraktCheckinPost.java

package media.thehoard.thirdparty.api.trakt.objects.post.checkins;

import media.thehoard.thirdparty.api.trakt.objects.basic.implementations.TraktSharingImpl;

public interface TraktCheckinPost<T extends TraktCheckinPost> {
	TraktSharingImpl getSharing();

	void setSharing(TraktSharingImpl sharing);

	T withSharing(TraktSharingImpl sharing);

	String getMessage();

	void setMessage(String message);

	T withMessage(String message);

	String getAppVersion();

	void setAppVersion(String appVersion);

	T withAppVersion(String appVersion);

	String getAppDate();

	void setAppDate(String appDate);

	T withAppDate(String appDate);

	String getFoursquareVenueId();

	void setFoursquareVenueId(String foursquareVenueId);

	T withFoursquareVenueId(String foursquareVenueId);

	String getFoursquareVenueName();

	void setFoursquareVenueName(String foursquareVenueName);

	T withFoursquareVenueName(String foursquareVenueName);
}

TraktCheckinPost.kt

package media.thehoard.thirdparty.api.trakt.objects.post.checkins

import media.thehoard.thirdparty.api.trakt.objects.basic.TraktSharing

interface TraktCheckinPost {
    var sharing: TraktSharing

    var message: String

    var appVersion: String

    var appDate: String

    var foursquareVenueId: String

    var foursquareVenueName: String
}

TraktMovieCheckinPost.java

package media.thehoard.thirdparty.api.trakt.objects.post.checkins;

import media.thehoard.thirdparty.api.trakt.objects.get.movies.implementations.TraktMovieImpl;

public interface TraktMovieCheckinPost extends TraktCheckinPost<TraktMovieCheckinPost> {
	TraktMovieImpl getMovie();

	void setMovie(TraktMovieImpl movie);

	TraktMovieCheckinPost withMovie(TraktMovieImpl movie);
}

TraktMovieCheckinPost.kt

package media.thehoard.thirdparty.api.trakt.objects.post.checkins

import media.thehoard.thirdparty.api.trakt.objects.get.movies.TraktMovie

interface TraktMovieCheckinPost : TraktCheckinPost {
    var movie: TraktMovie
}

TraktMovieCheckinPostImpl.java

package media.thehoard.thirdparty.api.trakt.objects.post.checkins.implementations;

import com.google.gson.annotations.SerializedName;
import media.thehoard.thirdparty.api.trakt.objects.basic.implementations.TraktSharingImpl;
import media.thehoard.thirdparty.api.trakt.objects.get.movies.implementations.TraktMovieImpl;
import media.thehoard.thirdparty.api.trakt.objects.post.checkins.TraktMovieCheckinPost;

public class TraktMovieCheckinPostImpl implements TraktMovieCheckinPost {
	private TraktSharingImpl sharing;
	private String message;
	@SerializedName("app_version")
	private String appVersion;
	@SerializedName("app_date")
	private String appDate;
	@SerializedName("venue_id")
	private String foursquareVenueId;
	@SerializedName("venue_name")
	private String foursquareVenueName;

	private TraktMovieImpl movie;

	@Override
	public TraktSharingImpl getSharing() {
		return sharing;
	}

	@Override
	public void setSharing(TraktSharingImpl sharing) {
		this.sharing = sharing;
	}

	@Override
	public TraktMovieCheckinPost withSharing(TraktSharingImpl sharing) {
		this.sharing = sharing;
		return this;
	}

	@Override
	public String getMessage() {
		return message;
	}

	@Override
	public void setMessage(String message) {
		this.message = message;
	}

	@Override
	public TraktMovieCheckinPost withMessage(String message) {
		this.message = message;
		return this;
	}

	@Override
	public String getAppVersion() {
		return appVersion;
	}

	@Override
	public void setAppVersion(String appVersion) {
		this.appVersion = appVersion;
	}

	@Override
	public TraktMovieCheckinPost withAppVersion(String appVersion) {
		this.appVersion = appVersion;
		return this;
	}

	@Override
	public String getAppDate() {
		return appDate;
	}

	@Override
	public void setAppDate(String appDate) {
		this.appDate = appDate;
	}

	@Override
	public TraktMovieCheckinPost withAppDate(String appDate) {
		this.appDate = appDate;
		return this;
	}

	@Override
	public String getFoursquareVenueId() {
		return foursquareVenueId;
	}

	@Override
	public void setFoursquareVenueId(String foursquareVenueId) {
		this.foursquareVenueId = foursquareVenueId;
	}

	@Override
	public TraktMovieCheckinPost withFoursquareVenueId(String foursquareVenueId) {
		this.foursquareVenueId = foursquareVenueId;
		return this;
	}

	@Override
	public String getFoursquareVenueName() {
		return foursquareVenueName;
	}

	@Override
	public void setFoursquareVenueName(String foursquareVenueName) {
		this.foursquareVenueName = foursquareVenueName;
	}

	@Override
	public TraktMovieCheckinPost withFoursquareVenueName(String foursquareVenueName) {
		this.foursquareVenueName = foursquareVenueName;
		return this;
	}

	@Override
	public TraktMovieImpl getMovie() {
		return movie;
	}

	@Override
	public void setMovie(TraktMovieImpl movie) {
		this.movie = movie;
	}

	@Override
	public TraktMovieCheckinPost withMovie(TraktMovieImpl movie) {
		this.movie = movie;
		return this;
	}

	@Override
	public boolean equals(Object o) {
		if (this == o) return true;
		if (o == null || getClass() != o.getClass()) return false;

		TraktMovieCheckinPostImpl that = (TraktMovieCheckinPostImpl) o;

		if (sharing != null ? !sharing.equals(that.sharing) : that.sharing != null) return false;
		if (message != null ? !message.equals(that.message) : that.message != null) return false;
		if (appVersion != null ? !appVersion.equals(that.appVersion) : that.appVersion != null) return false;
		if (appDate != null ? !appDate.equals(that.appDate) : that.appDate != null) return false;
		if (foursquareVenueId != null ? !foursquareVenueId.equals(that.foursquareVenueId)
				: that.foursquareVenueId != null) return false;
		if (foursquareVenueName != null ? !foursquareVenueName.equals(that.foursquareVenueName)
				: that.foursquareVenueName != null) return false;
		return movie != null ? movie.equals(that.movie) : that.movie == null;
	}

	@Override
	public int hashCode() {
		int result = sharing != null ? sharing.hashCode() : 0;
		result = 31 * result + (message != null ? message.hashCode() : 0);
		result = 31 * result + (appVersion != null ? appVersion.hashCode() : 0);
		result = 31 * result + (appDate != null ? appDate.hashCode() : 0);
		result = 31 * result + (foursquareVenueId != null ? foursquareVenueId.hashCode() : 0);
		result = 31 * result + (foursquareVenueName != null ? foursquareVenueName.hashCode() : 0);
		result = 31 * result + (movie != null ? movie.hashCode() : 0);
		return result;
	}

	@Override
	public String toString() {
		return "TraktMovieCheckinPost{" + "sharing=" + sharing + ", message='" + message + '\'' + ", appVersion='" + appVersion + '\'' + ", appDate='" + appDate + '\'' + ", foursquareVenueId='" + foursquareVenueId + '\'' + ", foursquareVenueName='" + foursquareVenueName + '\'' + ", movie=" + movie + '}';
	}
}

TraktMovieCheckinPostImpl.kt

package media.thehoard.thirdparty.api.trakt.objects.post.checkins.implementations

import com.google.gson.annotations.SerializedName
import media.thehoard.thirdparty.api.trakt.objects.basic.TraktSharing
import media.thehoard.thirdparty.api.trakt.objects.get.movies.TraktMovie
import media.thehoard.thirdparty.api.trakt.objects.post.checkins.TraktMovieCheckinPost

data class TraktMovieCheckinPostImpl(override var sharing: TraktSharing,
                                     override var message: String,
                                     @SerializedName("app_version") override var appVersion: String,
                                     @SerializedName("app_date") override var appDate: String,
                                     @SerializedName("venue_id") override var foursquareVenueId: String,
                                     @SerializedName("venue_name") override var foursquareVenueName: String,
                                     override var movie: TraktMovie) : TraktMovieCheckinPost