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  1. import java.io.File;
  2. import java.util.ArrayList;
  3. import java.util.List;
  4.  
  5. class Attachement {
  6.     private final File file;
  7.     public Attachement(String path) {
  8.         file = new File(path);
  9.     }
  10.     public String toJsonString() {
  11.         return "  { \"path\": \"" + file.getAbsolutePath() + "\" }";
  12.     }
  13. }
  14.  
  15. class AttachementHolder {
  16.     private final List<Attachement> attachements = new ArrayList<Attachement>();
  17.     public void addAttachement(Attachement attachement) {
  18.         attachements.add(attachement);
  19.     }
  20.     public String toJSON() {
  21.         StringBuilder sb = new StringBuilder("{\n\"files\": [\n");
  22.         boolean addSeparator = false;
  23.         for (Attachement attachement : attachements) {
  24.             if (addSeparator) {
  25.                 sb.append(",\n");
  26.             } else {
  27.                 addSeparator = true;
  28.             }
  29.             sb.append(attachement.toJsonString());
  30.         }
  31.         sb.append("\n ]\n}");
  32.         return sb.toString();
  33.     }
  34. }
  35.  
  36. public class Main {
  37.  
  38.     public static void main(String[] args) {
  39.         AttachementHolder holder = new AttachementHolder();
  40.         holder.addAttachement(new Attachement("/home/file1"));
  41.         holder.addAttachement(new Attachement("/home/file2"));
  42.         holder.addAttachement(new Attachement("/home/file3"));
  43.         System.out.println(holder.toJSON());
  44.     }
  45. }
Success #stdin #stdout 0.07s 380224KB
comments (?)
stdin 
Standard input is empty
stdout 
{
"files": [
  { "path": "/home/file1" },
  { "path": "/home/file2" },
  { "path": "/home/file3" }
 ]
}
https://ideone.com/H23Za7
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
secret

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