StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POWriting an instance(s) of a class in a file in json or xml
primarykey
Id
17564683
data
AcceptedAnswerId
17564796
AnswerCount
2
ClosedDate
2013-07-10T09:10:30.437
CommentCount
3
CommunityOwnedDate
CreationDate
2013-07-10T07:23:32.467
FavoriteCount
0
LastActivityDate
2013-07-10T07:30:34.843
LastEditDate
LastEditorUserId
0
OwnerUserId
1708058
ParentId
0
PostTypeId
1
Score
0
ViewCount
83
LastEditorDisplayName
text
Body
I have the list of instances of a class which kind of complicated: it have many val's including nested classes those also have many val's. I want to write in a file in either <code>json</code> or <code>xml</code> format. I found a simple example which seems to do what I want (in Java, though, but it really doesn't matter): <pre><code>#Main.java import java.io.FileOutputStream; import java.io.IOException; import java.io.ObjectOutputStream; public class Main { public static void main(String args[]) { try { Employee employee = new Employee("0001", "Robert", "Newyork City", "IT"); FileOutputStream fos = new FileOutputStream("my-data.txt"); ObjectOutputStream oos = new ObjectOutputStream(fos); oos.writeObject(employee); oos.flush(); oos.close(); System.out.println("Employee Object written to file employee.dat"); } catch (IOException ex) { ex.printStackTrace(); } } } #Employee.java import java.io.Serializable; public class Employee implements Serializable { private String empId; private String Name; private String Address; private String Dept; public Employee(String empId, String name, String address, String dept) { this.empId = empId; this.Name = name; this.Address = address; this.Dept = dept; } public String toString() { return "[Employee: " + empId + ", " + ", " + Name + ", " + Address + ", " + Dept + "]"; } } </code></pre> And what I had as an output was a binary data written in a file. Moreover, <code>toString()</code> methods enumerates all fields manually, which is unacceptable for my real class. So how do I do that? I'd really appreciate if you give even a small example of it, instead of saying "there is a library called X, use it". I've already failed using all these libraries in my previous question about serialization. I'm not sure yet if what I need is serialization, because I need it to be stored in not binary, but in xml or json format.
Tags
<java><xml><json><scala>
Title
Writing an instance(s) of a class in a file in json or xml
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. This table or related slice is empty.
UserOwnerUserId
1. USAlan Coromano
plurals
PostLinksPostIdRelatedPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
2. PL
 singulars
 LinkTypeLinkTypeId
 LTDuplicate
PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. This table or related slice is empty.
CommentsPostId

Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.