Image Helper for Infolady project

public class Image {

    private String baseUrl = "http://stage.isocial.com.bd/";
    private String imageUrl = baseUrl + "uploads/";
    private String memberImageUrl = imageUrl + "member/";
    private String placeholderImage = "http://placehold.it/350x150";

    private String domain;
    private String size = "t";
    private String imageId;

    public Image setDomain(String domain){
        this.domain = domain;
        return this;
    }

    public Image setSize(String size){
        this.size = size;
        return this;
    }

    public Image setId(String imageId){
        this.imageId = imageId;
        return this;
    }

    public Image setPlaceholder(String placeholder){
        this.placeholderImage = placeholder;
        return this;
    }

    public String get(){
        Pattern pattern = Pattern.compile("(\\d+)_(\\d+)_([\\d\\-]+.[a-z]+)");
        Matcher matcher = pattern.matcher(this.imageId);
        String url = "";
        if(matcher.find()){
            String year = matcher.group(1);
            String month = matcher.group(2);
            String id = matcher.group(3);

            String relUrl = "";

            if(this.domain.equalsIgnoreCase("member")){
                relUrl = this.memberImageUrl;
            }

            url = relUrl + year + "/" + month + "/" + this.size + id;

        }else{
            url = this.placeholderImage;
        }
        return url;
    }

}




// Usage

public class TestApp{

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        System.out.println(new Image().setDomain("member").setId("2017_02_1486274285-8933.jpg").get());
        System.out.println(new Image().setDomain("member").setPlaceholder("http://placehold.it/350x150").setId("2017_02_1486274285-8933.jpg").get());
    }

}