URL escape sample (java.net.URLEncoder and Guava UrlEscaper)

UrlEscapeSample.java

public class UrlEscapeSample {
  public static void main(String[] args) {
    String filename = "中国 地图/? a.docx";
    String urlEncoding = URLEncoder.encode(filename, StandardCharsets.UTF_8.toString());
    prettyPrint("java.net.URLEncoder", urlEncoding);
    prettyPrint("UrlEscapers.urlFormParameterEscaper", UrlEscapers.urlFormParameterEscaper().escape(filename));
    prettyPrint("java.net.URLEncoder then replace to %20", urlEncoding.replaceAll("\\+", "%20"));
    prettyPrint("UrlEscapers.urlPathSegmentEscaper", UrlEscapers.urlPathSegmentEscaper().escape(filename));
    prettyPrint("UrlEscapers.urlFragmentEscaper", UrlEscapers.urlFragmentEscaper().escape(filename));
  }
  
  static void prettyPrint(String label, String value) {
    System.out.printf("%-40s%-10s%s\n", label, "-->", value);
  }
}