added JSONObject#query() and JSONPointer#query() methods

JSONArray.java

@@ -30,7 +30,11 @@ import java.io.Writer;
 import java.lang.reflect.Array;
 import java.math.BigDecimal;
 import java.math.BigInteger;
-import java.util.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
 
 /**
  * A JSONArray is an ordered sequence of values. Its external text form is a
@@ -955,6 +959,10 @@ public class JSONArray implements Iterable<Object> {
         }
         return this;
     }
+    
+    public Object query(String jsonPointer) {
+        return new JSONPointer(jsonPointer).queryFrom(this);
+    }
 
     /**
      * Remove an index and close the hole.