Java list in JSON notation

Question

for example I have a List<Point> vertices which has 3 points and each of them have x and y would look in JSON notation?

for example List vertices:

[0] -> x = 1 , y = 2
[1] -> x = 4, y = 5
[2] -> x = 7, y = 5

Considering that object Color has two parameters and in JSON it looks like

"colour":{"value":-16711936,"falpha":0.0}...

So it should look like

"[0]":{"x": 1, "y":2}...

And so on. But i need to put it in the List vertices in JSON.

I dont get it, you want to serialize a Map of points, Colors?? — ΦXocę 웃 Пepeúpa ツ
– ΦXocę 웃 Пepeúpa ツ, Commented Mar 18, 2016 at 15:51
{"listOfShapeEvents":[{"xStart":20,"yStart":40,"xEnd":30,"yEnd":90,"colour":{"value":-65536,"falpha":0.0},"thickness":5,"shapeType":"LINE","eventType":"SHAPE"}]} I have this this is my straight Line, which reading just an objects from Java. But i need to read a list named "vertices" which has 3 points and each point has 2 parameters x and y . How is going to look in JSON notation — Antoshjke
– Antoshjke, Commented Mar 18, 2016 at 15:54

Ernesto Rendon · Accepted Answer · 2016-03-18 15:54:09Z

2

This conversion problem has been solved with multiple java libraries. Jackson is a good library for Java to / from JSON

answered Mar 18, 2016 at 15:54

Ernesto Rendon

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1 Comment

SO answers are not for recommending libraries.

bhspencer · Accepted Answer · 2016-03-18 17:38:48Z

0

The JSON for your described array of points would like this:

[
  {
    "x" : 1,
    "y" : 2
  },
  {
    "x" : 4,
    "y" : 5
  },
  {
    "x" : 7,
    "y" : 5
  }
]

Note the use of square brackets to indicate this is an array.

answered Mar 18, 2016 at 17:38

bhspencer

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