JavaでWebAPIを叩いて値を取り出したい

###実現したいこと
JSONICを使ってWeatherHacksのお天気WebサービスからJSONを取得して値を取り出したいのですがエラーが起きてしまいます。どうすればうまく動くでしょうか。何卒よろしくお願いいたします。

###発生している問題・エラーメッセージ

 12日は、曇り時々晴れの見込みです。, publicTime=2016-08-11T10:44:00+0900}} は class sample.WeatherJson に変換できませんでした: $.forecasts
	at net.arnx.jsonic.JSON$Context.convertInternal(JSON.java:1775)
	at net.arnx.jsonic.JSON.parse(JSON.java:1155)
	at net.arnx.jsonic.JSON.parse(JSON.java:1130)
	at sample.Weather.main(Weather.java:63)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
Caused by: java.lang.UnsupportedOperationException: Cannot convert class java.util.ArrayList to class sample.Forecasts
	at net.arnx.jsonic.ObjectConverter.convert(Converter.java:1655)
	at net.arnx.jsonic.JSON.postparse(JSON.java:1310)
	at net.arnx.jsonic.JSON$Context.postparseInternal(JSON.java:1754)
	at net.arnx.jsonic.ObjectConverter.convert(Converter.java:1650)
	at net.arnx.jsonic.JSON.postparse(JSON.java:1310)
	at net.arnx.jsonic.JSON$Context.convertInternal(JSON.java:1762)
	... 8 more

###コード
main

        URL url = new URL("http://weather.livedoor.com/forecast/webservice/json/v1?city=130010");
        System.err.println(url.toString());

        HttpURLConnection urlconn = (HttpURLConnection) url.openConnection();
        urlconn.setRequestMethod("GET");
        urlconn.setInstanceFollowRedirects(false);
        urlconn.connect();
        BufferedReader reader =
                new BufferedReader(new InputStreamReader(urlconn.getInputStream()));
        StringBuffer responseBuffer = new StringBuffer();
        while (true) {
            String line = reader.readLine();
            System.out.println(line);
            if (line == null) {
                break;
            }
            responseBuffer.append(line);
        }
        reader.close();
        urlconn.disconnect();

        String response = responseBuffer.toString();

        WeatherJson weather = JSON.decode(response,WeatherJson.class);

WeatherJson.java

public class WeatherJson {
    private Location location;
    private String title;
    private String link;
    private String publicTime;
    private Description description;
    private Forecasts forecasts;
    private PinpointLocation pinpointLocation;
    private Copyright copyright;

    public void setLocation(Location location) {
        this.location = location;
    }

    public Location getLocation() {
        return location;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getTitle() {
        return title;
    }

    public void setLink(String link) {
        this.link = link;
    }

    public String getLink() {
        return link;
    }

    public void setPublicTime(String publicTime) {
        this.publicTime = publicTime;
    }

    public String getPublicTime() {
        return publicTime;
    }

    public void setDescription(Description description) {
        this.description = description;
    }

    public Description getDescription() {
        return description;
    }


    public void setForecasts(Forecasts forecasts) {
        this.forecasts = forecasts;
    }

    public Forecasts getForecasts() {
        return forecasts;
    }

    public void setPinpointLocation(PinpointLocation pinpointLocation) {
        this.pinpointLocation = pinpointLocation;
    }

    public PinpointLocation getPinpointLocation() {
        return pinpointLocation;
    }

    public void setCopyright(Copyright copyright) {
        this.copyright = copyright;
    }

    public Copyright getCopyright() {
        return copyright;
    }
}

Location.java

public class Location {
    private String area;
    private String pref;
    private String city;

    public void setArea(String area) {
        this.area = area;
    }

    public String getArea() {
        return area;
    }

    public void setPref(String pref) {
        this.pref = pref;
    }

    public String getPref() {
        return pref;
    }

    public void setCity(String city) {
        this.city = city;
    }

    public String getCity() {
        return city;
    }
}

Description.java

public class Description {
    private String text;
    private String publicTime;

    public void setText(String text) {
        this.text = text;
    }

    public String getText() {
        return text;
    }

    public void setPublicTime(String publicTime) {
        this.publicTime = publicTime;
    }

    public String getPublicTime() {
        return publicTime;
    }
}

Forecasts.java

public class Forecasts {
    private String date;
    private String dateLabel;
    private String telop;
    private Image image;
    private Temperature temperature;

    public void setDate(String date) {
        this.date = date;
    }

    public String getDate() {
        return date;
    }

    public void setDateLabel(String dateLabel) {
        this.dateLabel = dateLabel;
    }

    public String getDateLabel() {
        return dateLabel;
    }

    public void setTelop(String telop) {
        this.telop = telop;
    }

    public String getTelop() {
        return telop;
    }

    public void setImage(Image image) {
        this.image = image;
    }

    public Image getImage() {
        return image;
    }

    public void setTemperature(Temperature temperature) {
        this.temperature = temperature;
    }

    public Temperature getTemperature() {
        return temperature;
    }
}

Image.java

public class Image {
    private String title;
    private String link;
    private String url;
    private int width;
    private int height;

    public void setTitle(String title) {
        this.title = title;
    }

    public String getTitle() {
        return title;
    }

    public void setLink(String link) {
        this.link = link;
    }

    public String getLink() {
        return link;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public String getUrl() {
        return url;
    }

    public void setWidth(int width) {
        this.width = width;
    }

    public int getWidth() {
        return width;
    }

    public void setHeight(int height) {
        this.height = height;
    }

    public int getHeight() {
        return height;
    }
}

Temperature.java

public class Temperature {
    private Min min;
    private Max max;

    public void setMin(Min min) {
        this.min = min;
    }

    public Min getMin() {
        return min;
    }

    public void setMax(Max max) {
        this.max = max;
    }

    public Max getMax() {
        return max;
    }
}

PinpointLocation.java

public class PinpointLocation {
    private String name;
    private String link;

    public void setName(String name) {
        this.name = name;
    }

    public String getName() {
        return name;
    }

    public void setLink(String link) {
        this.link = link;
    }

    public String getLink() {
        return link;
    }
}

public class Copyright {
    private String title;
    private String link;
    private String image;
    private String provider;

    public void setTitle(String title) {
        this.title = title;
    }

    public String getTitle() {
        return title;
    }

    public void setLink(String link) {
        this.link = link;
    }

    public String getLink() {
        return link;
    }

    public void setImage(String image) {
        this.image = image;
    }

    public String getImage() {
        return image;
    }

    public void setProvider(String provider) {
        this.provider = provider;
    }

    public String getProvider() {
        return provider;
    }

}