I found a way to parse array of arrays in here with gson.. but I need it with json simple..
here's my json file:
{
"matrix" : [
[6,"",3,8,"A"],
["","B",1,"A",9]
]
}
The arrays are made of strings, integers and null, is there a way to parse them into an ArrayList of ArrayList of objects so when I use it I can cast these single values into the right type?
You can try this it's very simple
//This is your Some Class let say CustomObject
class CustomObject implements Serializable {
List<ArrayList<Object>> matrix;
public List<ArrayList<Object>> getMatrix() {
return matrix;
}
public void setMatrix(List<ArrayList<Object>> matrix) {
this.matrix = matrix;
}
}
If your string input is as shown in question then below code is works fine. (In Question you missed ',' at the end of first array in matrix)
CustomObject customObject = new Gson().fromJson(input, CustomObject.class);
System.out.println(customObject.matrix.size());
System.out.println("DONE");
You can try org.json packages. They offer easy ways to parse JSON. See this question(maybe you searched and didn't find it?)
Answers suggest this:
https://github.com/stleary/JSON-java
Or, Jackson: https://github.com/FasterXML/jackson
There is no built-in ways to do it.
