problem with using regular expression

[orkun]

hello

I have huge strings and from which I want to extract this form: [ *,* ] using regular expression.

here is the fragment of the string.

{ "type": "Polygon", "coordinates": [ [ [ 32.090000, 41.110000 ], [ 32.090537, 41.110510 ], [ 32.091100, 41.110991 ], [ 32.100000, 41.114142 ], [ 32.100740, 41.114123 ], [ 32.101478, 41.114065 ] ] ]}

[toadaly]

Try the following

".*\\[(.*\\,.*)\\].*"

Then you can use the group(int group) method of the Matcher class to access the matching capture groups.


...if you want the result to include the square brackets, then move those inside the parentheses.

[eRaaaa]

or better: use a json parser like gson or jackson :D

[orkun]

thank you

I am actually JSON format.
So how can I use JSON and can you recommend any reference material ?

regards

[eRaaaa]

JSON
and gson guide Gson User Guide - gson
+
jackson tutorial: Jackson JSON Processor - Tutorial

are you sure, that you want an array in an array in an array ? :D ("coordinates": [ [ [ ) ?
thats strange imo :D

here is an little gson example with your json string

simple java class

class Shape {
	private String type;
	private Double[][][] coordinates; // or private List<Double[][]> coordinates; or something similar

	/**
	 * @return the type
	 */
	public String getType() {
		return type;
	}

	/**
	 * @return the coordinates
	 */
	public Double[][][] getCoordinates() {
		return coordinates;
	}
}

parse

	public static void main(String[] args) {
		String json = "{ \"type\": \"Polygon\", \"coordinates\": [ [ [ 32.090000, 41.110000 ], [ 32.090537, 41.110510 ], [ 32.091100, 41.110991 ], [ 32.100000, 41.114142 ], [ 32.100740, 41.114123 ], [ 32.101478, 41.114065 ] ] ]} ";
		Shape s = new Gson().fromJson(json, Shape.class);
		System.out.println(s.getType());
		for (Double[][] arr : s.getCoordinates()) {
			for (Double[] doubles : arr) {
				System.out.println(Arrays.toString(doubles));
			}
		}
	}

[orkun]

thank you

I will study on the example you sent to me.

the reason I sent the initial mail was to eliminate all words and [[[ (replace it to [[)

So I aim to get [ [ 32.033333, 41.166667 ], [ 32.036914, 41.170064 ], ....] for javascript array.