title: Ignore specific node within array when comparing two JSON in Java
body: <p>I want to compare two JSON strings in Java 8 for equality, but ignore specific known nodes which contain values which are expected to be different and are a tolerated difference e.g. timestamp.
  Currently using JSONAssert v1.5.0 from org.SkyScreamer, I'm able to 'ignore' a number of these nodes, but cannot 'ignore' nodes within an array. </p>
  
  <p>What I would like is to extend my current JSONComparator to include a Customization which has its first 'path' parameter having an array address.</p>
  
  <pre><code>JSONComparator customisedJobComparator = new CustomComparator(JSONCompareMode.NON_EXTENSIBLE,
              new Customization("id", (o1, o2) -&gt; true),
              new Customization("appointmentBookedDate.$date", (o1, o2) -&gt; true),
              ...
              new Customization("someArray[n].timestamp", (o1, o2) -&gt; true) //&lt;--- this is wrong, what is the correct way for this path address?
              );
  </code></pre>
  
  <p>The code below is my attempt at proving a solution; both expected/actual JSON strings are identical except for anArray[].id values. 
  I want this test to pass, but is failing with error: 
  java.lang.AssertionError: anArray[0] Could not find match for element {"id":"valueA"}               </p>
  
  <pre><code>@Test
  public void compareJsonStrIgnoringDiffInArray() {
      String errorMsg = "";
      String expectedJsonStr = "{\"anArray\": [{\"id\": \"valueA\"}, {\"colour\": \"Blue\"}]}";
      String actualJsonStr = "{\"anArray\": [{\"id\": \"valueB\"}, {\"colour\": \"Blue\"}]}";
  
      //Create custom comparator which compares two json strings but ignores reporting any differences for anArray[n].id values
      //as they are a tolerated difference
      Customization customization = new Customization("anArray[n].id", (o1, o2) -&gt; true);
      JSONComparator customisedComparator = new CustomComparator(JSONCompareMode.NON_EXTENSIBLE, customization);
  
      JSONAssert.assertEquals(errorMsg, expectedJsonStr, actualJsonStr, customisedComparator);
  }
  </code></pre>