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.

JSONObject.java

@@ -32,8 +32,15 @@ import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.math.BigDecimal;
 import java.math.BigInteger;
-import java.util.*;
+import java.util.Collection;
+import java.util.Enumeration;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Locale;
+import java.util.Map;
 import java.util.Map.Entry;
+import java.util.ResourceBundle;
+import java.util.Set;
 
 /**
  * A JSONObject is an unordered collection of name/value pairs. Its external
@@ -1330,6 +1337,10 @@ public class JSONObject {
         }
         return this;
     }
+    
+    public Object query(String jsonPointer) {
+        return new JSONPointer(jsonPointer).queryFrom(this);
+    }
 
     /**
      * Produce a string in double quotes with backslash sequences in all the

JSONPointer.java

@@ -44,7 +44,7 @@ public class JSONPointer {
                 .replace("\\\\", "\\");
     }
 
-    public Object queryFrom(JSONObject document) {
+    public Object queryFrom(Object document) {
         if (refTokens.isEmpty()) {
             return document;
         }