title: Deserializing json array using gson
body: <p>Continuing from <a href="https://stackoverflow.com/questions/3414021/how-do-i-modify-a-large-json-string">this question</a>.</p>
  
  <p>I'm having trouble deserializing the following json array (Sorry for the size):</p>
  
  <pre><code>"geometry": { "type": "Polygon", "coordinates": [ [ [ 771230.894373, 4422896.962001 ],
   [ 804804.852796, 4451159.130080 ], [ 876828.563339, 4417873.954498 ], [ 959794.979827, 
  4430944.287708 ], [ 910992.515063, 4372980.866944 ], [ 932488.308736, 4357684.778349 ], 
  [ 918573.372386, 4115663.286966 ], [ 834059.614976, 4013708.358795 ], [ 929360.231044, 
  3833522.241529 ], [ 1008029.715188, 3776446.653183 ], [ 1061663.445852, 3533717.758754      
  ], [ 1035703.740599, 3519308.069656 ], [ 1095348.723766, 3396028.487184 ], [ 
  1108462.159782, 3230455.268230 ], [ 1083571.121640, 3163122.508021 ], [ 1103953.720405, 
  3082716.041755 ], [ 1045722.494771, 3020215.642212 ], [ 1117367.719045, 2915275.458735 
  ], [ 1141268.013718, 2827405.304519 ], [ 1286729.192338, 2790314.754276 ], [ 
  1334329.406601, 2695307.513404 ], [ 829417.592210, 2374337.277646 ], [ 647042.870444, 
  2207530.090128 ], [ 370914.873531, 2152159.656850 ], [ 346669.488436, 2173360.227237 ], 
  [ 359905.375891, 2251757.174668 ], [ 199905.871774, 2309591.361246 ], [ 129963.835709, 
  2361036.252651 ], [ 130208.738589, 2404106.913263 ], [ -964785.432600, 3159802.671416 
  ], [ -964829.960396, 3338713.127631 ], [ -851005.781060, 3424742.002477 ], [ -
  616522.405653, 3491025.523892 ], [ -547749.224241, 3569019.334331 ], [ -403724.067052, 
  3628920.873754 ], [ -423973.082428, 3724062.779415 ], [ -333893.350478, 3741450.793542 
  ], [ -317696.364567, 3774909.265404 ], [ -131414.328674, 3777826.527844 ], [ -
  112467.751341, 3830221.719769 ], [ -185682.580436, 3930014.456814 ], [ -194499.084106, 
  4129581.855629 ], [ -245950.952751, 4175549.526399 ], [ -42303.076294, 4287174.981681 
  ], [ -11222.674464, 4271148.905617 ], [ 131633.628071, 4371332.547494 ], [ 
  433220.392528, 4427574.250017 ], [ 593119.709103, 4389089.571176 ], [ 719645.442339, 
  4451856.882422 ], [ 771230.894373, 4422896.962001 ] ] ] }
  </code></pre>
  
  <p>If I paste it into a json-viewer, I get this structure:</p>
  
  <pre><code>[geometry]
  ...
  [coordinates] =&gt; Array
      (
          [0] =&gt; Array
              (
                  [0] =&gt; Array
                      (
                          [0] =&gt; 771230.894373
                          [1] =&gt; 4422896.962001
                      )
                  [1] =&gt; Array
                      (
                          [0] =&gt; 804804.852796
                          [1] =&gt; 4451159.13008
                      )
                  ...
                  [n] =&gt; Array
          [n] =&gt; Array
  </code></pre>
  
  <p>Now, the array containing the arrays with the coordinates has a variable size. So I figured that in java, this whole object whould be an array, containing a collection of arrays, with each array containing a <code>Collection&lt;double[]&gt;</code>. Something like <code>Collection&lt;double[]&gt;[][].</code></p>
  
  <p>But gson does not accept this. I get the following error message:</p>
  
  <pre><code>Exception in thread "main" com.google.gson.JsonParseException: Expecting object but     
  found array: 2.963610
  </code></pre>
  
  <p>Which seems weird, as <code>2.963610</code> doesnt look like an array to me. But it might have confused me to the point where I'm lost, more or less...</p>