diff --git a/src/main/java/org/json/JSONObject.java b/src/main/java/org/json/JSONObject.java
index 0a730f4..7e8cbbe 100644
--- a/src/main/java/org/json/JSONObject.java
+++ b/src/main/java/org/json/JSONObject.java
@@ -2392,8 +2392,14 @@ public class JSONObject {
      */
     protected static Number stringToNumber(final String input) throws NumberFormatException {
         String val = input;
+        if (val.startsWith(".")){
+            val = "0"+val;
+        }
+        if (val.startsWith("-.")){
+            val = "-0."+val.substring(2);
+        }
         char initial = val.charAt(0);
-        if ((initial >= '0' && initial <= '9') || initial == '-') {
+        if ((initial >= '0' && initial <= '9') || initial == '-' ) {
             // decimal representation
             if (isDecimalNotation(val)) {
                 // Use a BigDecimal all the time so we keep the original
@@ -2424,13 +2430,13 @@ public class JSONObject {
             if(initial == '0' && val.length() > 1) {
                 char at1 = val.charAt(1);
                 if(at1 >= '0' && at1 <= '9') {
-                    throw new NumberFormatException("val ["+val+"] is not a valid number.");
+                    throw new NumberFormatException("val ["+input+"] is not a valid number.");
                 }
             } else if (initial == '-' && val.length() > 2) {
                 char at1 = val.charAt(1);
                 char at2 = val.charAt(2);
                 if(at1 == '0' && at2 >= '0' && at2 <= '9') {
-                    throw new NumberFormatException("val ["+val+"] is not a valid number.");
+                    throw new NumberFormatException("val ["+input+"] is not a valid number.");
                 }
             }
             // integer representation.
@@ -2450,7 +2456,7 @@ public class JSONObject {
             }
             return bi;
         }
-        throw new NumberFormatException("val ["+val+"] is not a valid number.");
+        throw new NumberFormatException("val ["+input+"] is not a valid number.");
     }
 
     /**
@@ -2486,8 +2492,7 @@ public class JSONObject {
          * produced, then the value will just be a string.
          */
 
-        char initial = string.charAt(0);
-        if ((initial >= '0' && initial <= '9') || initial == '-') {
+        if (potentialNumber(string)) {
             try {
                 return stringToNumber(string);
             } catch (Exception ignore) {
@@ -2496,6 +2501,28 @@ public class JSONObject {
         return string;
     }
 
+
+    private static boolean potentialNumber(String value){
+        if (value == null || value.isEmpty()){
+            return false;
+        }
+        return potentialPositiveNumberStartingAtIndex(value, (value.charAt(0)=='-'?1:0));
+    }
+
+    private static boolean potentialPositiveNumberStartingAtIndex(String value,int index){
+        if (index >= value.length()){
+            return false;
+        }
+        return digitAtIndex(value, (value.charAt(index)=='.'?index+1:index));
+    }
+
+    private static boolean digitAtIndex(String value, int index){
+        if (index >= value.length()){
+            return false;
+        }
+        return value.charAt(index) >= '0' && value.charAt(index) <= '9';
+    }
+
     /**
      * Throw an exception if the object is a NaN or infinite number.
      *
@@ -2902,26 +2929,15 @@ public class JSONObject {
      * @return number without leading zeros
      */
     private static String removeLeadingZerosOfNumber(String value){
-        char[] chars = value.toCharArray();
-        int leftMostUnsignedIndex = 0;
-        if (chars[0] == '-'){
-            leftMostUnsignedIndex = 1;
-        }
-        int firstNonZeroCharIndex = -1;
-        for (int i=leftMostUnsignedIndex;i<value.length();i++){
-            if (chars[i] != '0'){
-                firstNonZeroCharIndex = i;
-                break;
+        if (value.equals("-")){return value;}
+        boolean negativeFirstChar = (value.charAt(0) == '-');
+        int counter = negativeFirstChar ? 1:0;
+        while (counter < value.length()){
+            if (value.charAt(counter) != '0'){
+                return String.format("%s%s", negativeFirstChar?'-':"",value.substring(counter));
             }
+            ++counter;
         }
-        if (firstNonZeroCharIndex == -1){
-            return value;
-        }
-        StringBuilder result = new StringBuilder();
-        if (leftMostUnsignedIndex == 1){
-            result.append('-');
-        }
-        result.append(value.substring(firstNonZeroCharIndex));
-        return result.toString();
+        return String.format("%s%s", negativeFirstChar?'-':"",'0');
     }
 }
diff --git a/src/test/java/org/json/junit/JSONObjectDecimalTest.java b/src/test/java/org/json/junit/JSONObjectDecimalTest.java
new file mode 100644
index 0000000..3302f0a
--- /dev/null
+++ b/src/test/java/org/json/junit/JSONObjectDecimalTest.java
@@ -0,0 +1,100 @@
+package org.json.junit;
+
+import org.json.JSONObject;
+import org.junit.Test;
+
+import java.math.BigDecimal;
+import java.math.BigInteger;
+
+import static org.junit.Assert.assertEquals;
+
+public class JSONObjectDecimalTest {
+
+    @Test
+    public void shouldParseDecimalNumberThatStartsWithDecimalPoint(){
+        JSONObject jsonObject = new JSONObject("{value:0.50}");
+        assertEquals("Float not recognized", 0.5f, jsonObject.getFloat("value"), 0.0f);
+        assertEquals("Float not recognized", 0.5f, jsonObject.optFloat("value"), 0.0f);
+        assertEquals("Float not recognized", 0.5f, jsonObject.optFloatObject("value"), 0.0f);
+        assertEquals("Double not recognized", 0.5d, jsonObject.optDouble("value"), 0.0f);
+        assertEquals("Double not recognized", 0.5d, jsonObject.optDoubleObject("value"), 0.0f);
+        assertEquals("Double not recognized", 0.5d, jsonObject.getDouble("value"), 0.0f);
+        assertEquals("Long not recognized", 0, jsonObject.optLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.getLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.optLongObject("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.getInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optIntegerObject("value"), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").intValue(), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").longValue(), 0);
+        assertEquals("BigDecimal not recognized", 0, BigDecimal.valueOf(.5).compareTo(jsonObject.getBigDecimal("value")));
+        assertEquals("BigInteger not recognized",0, BigInteger.valueOf(0).compareTo(jsonObject.getBigInteger("value")));
+    }
+
+
+
+    @Test
+    public void shouldParseNegativeDecimalNumberThatStartsWithDecimalPoint(){
+        JSONObject jsonObject = new JSONObject("{value:-.50}");
+        assertEquals("Float not recognized", -0.5f, jsonObject.getFloat("value"), 0.0f);
+        assertEquals("Float not recognized", -0.5f, jsonObject.optFloat("value"), 0.0f);
+        assertEquals("Float not recognized", -0.5f, jsonObject.optFloatObject("value"), 0.0f);
+        assertEquals("Double not recognized", -0.5d, jsonObject.optDouble("value"), 0.0f);
+        assertEquals("Double not recognized", -0.5d, jsonObject.optDoubleObject("value"), 0.0f);
+        assertEquals("Double not recognized", -0.5d, jsonObject.getDouble("value"), 0.0f);
+        assertEquals("Long not recognized", 0, jsonObject.optLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.getLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.optLongObject("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.getInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optIntegerObject("value"), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").intValue(), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").longValue(), 0);
+        assertEquals("BigDecimal not recognized", 0, BigDecimal.valueOf(-.5).compareTo(jsonObject.getBigDecimal("value")));
+        assertEquals("BigInteger not recognized",0, BigInteger.valueOf(0).compareTo(jsonObject.getBigInteger("value")));
+    }
+
+    @Test
+    public void shouldParseDecimalNumberThatHasZeroBeforeWithDecimalPoint(){
+        JSONObject jsonObject = new JSONObject("{value:00.050}");
+        assertEquals("Float not recognized", 0.05f, jsonObject.getFloat("value"), 0.0f);
+        assertEquals("Float not recognized", 0.05f, jsonObject.optFloat("value"), 0.0f);
+        assertEquals("Float not recognized", 0.05f, jsonObject.optFloatObject("value"), 0.0f);
+        assertEquals("Double not recognized", 0.05d, jsonObject.optDouble("value"), 0.0f);
+        assertEquals("Double not recognized", 0.05d, jsonObject.optDoubleObject("value"), 0.0f);
+        assertEquals("Double not recognized", 0.05d, jsonObject.getDouble("value"), 0.0f);
+        assertEquals("Long not recognized", 0, jsonObject.optLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.getLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.optLongObject("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.getInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optIntegerObject("value"), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").intValue(), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").longValue(), 0);
+        assertEquals("BigDecimal not recognized", 0, BigDecimal.valueOf(.05).compareTo(jsonObject.getBigDecimal("value")));
+        assertEquals("BigInteger not recognized",0, BigInteger.valueOf(0).compareTo(jsonObject.getBigInteger("value")));
+    }
+
+    @Test
+    public void shouldParseNegativeDecimalNumberThatHasZeroBeforeWithDecimalPoint(){
+        JSONObject jsonObject = new JSONObject("{value:-00.050}");
+        assertEquals("Float not recognized", -0.05f, jsonObject.getFloat("value"), 0.0f);
+        assertEquals("Float not recognized", -0.05f, jsonObject.optFloat("value"), 0.0f);
+        assertEquals("Float not recognized", -0.05f, jsonObject.optFloatObject("value"), 0.0f);
+        assertEquals("Double not recognized", -0.05d, jsonObject.optDouble("value"), 0.0f);
+        assertEquals("Double not recognized", -0.05d, jsonObject.optDoubleObject("value"), 0.0f);
+        assertEquals("Double not recognized", -0.05d, jsonObject.getDouble("value"), 0.0f);
+        assertEquals("Long not recognized", 0, jsonObject.optLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.getLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.optLongObject("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.getInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optIntegerObject("value"), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").intValue(), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").longValue(), 0);
+        assertEquals("BigDecimal not recognized", 0, BigDecimal.valueOf(-.05).compareTo(jsonObject.getBigDecimal("value")));
+        assertEquals("BigInteger not recognized",0, BigInteger.valueOf(0).compareTo(jsonObject.getBigInteger("value")));
+    }
+
+
+}
diff --git a/src/test/java/org/json/junit/JSONObjectTest.java b/src/test/java/org/json/junit/JSONObjectTest.java
index 3662a82..5adb6ce 100644
--- a/src/test/java/org/json/junit/JSONObjectTest.java
+++ b/src/test/java/org/json/junit/JSONObjectTest.java
@@ -4,6 +4,7 @@ package org.json.junit;
 Public Domain.
 */
 
+import static java.lang.Double.NaN;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotEquals;
@@ -782,7 +783,7 @@ public class JSONObjectTest {
         jsonObject.accumulate("myArray", -23.45e7);
         // include an unsupported object for coverage
         try {
-            jsonObject.accumulate("myArray", Double.NaN);
+            jsonObject.accumulate("myArray", NaN);
             fail("Expected exception");
         } catch (JSONException ignored) {}
 
@@ -814,7 +815,7 @@ public class JSONObjectTest {
         jsonObject.append("myArray", -23.45e7);
         // include an unsupported object for coverage
         try {
-            jsonObject.append("myArray", Double.NaN);
+            jsonObject.append("myArray", NaN);
             fail("Expected exception");
         } catch (JSONException ignored) {}
 
@@ -839,7 +840,7 @@ public class JSONObjectTest {
     public void jsonObjectDoubleToString() {
         String [] expectedStrs = {"1", "1", "-23.4", "-2.345E68", "null", "null" };
         Double [] doubles = { 1.0, 00001.00000, -23.4, -23.45e67, 
-                Double.NaN, Double.NEGATIVE_INFINITY }; 
+                NaN, Double.NEGATIVE_INFINITY };
         for (int i = 0; i < expectedStrs.length; ++i) {
             String actualStr = JSONObject.doubleToString(doubles[i]);
             assertTrue("value expected ["+expectedStrs[i]+
@@ -894,11 +895,11 @@ public class JSONObjectTest {
         assertTrue("opt doubleKey should be double", 
                 jsonObject.optDouble("doubleKey") == -23.45e7);
         assertTrue("opt doubleKey with Default should be double", 
-                jsonObject.optDouble("doubleStrKey", Double.NaN) == 1);
+                jsonObject.optDouble("doubleStrKey", NaN) == 1);
         assertTrue("opt doubleKey should be Double",
                 Double.valueOf(-23.45e7).equals(jsonObject.optDoubleObject("doubleKey")));
         assertTrue("opt doubleKey with Default should be Double",
-                Double.valueOf(1).equals(jsonObject.optDoubleObject("doubleStrKey", Double.NaN)));
+                Double.valueOf(1).equals(jsonObject.optDoubleObject("doubleStrKey", NaN)));
         assertTrue("opt negZeroKey should be a Double", 
                 jsonObject.opt("negZeroKey") instanceof Double);
         assertTrue("get negZeroKey should be a Double", 
@@ -1071,9 +1072,14 @@ public class JSONObjectTest {
                 "\"hexFloat\":0x1.0P-1074,"+
                 "\"floatIdentifier\":0.1f,"+
                 "\"doubleIdentifier\":0.1d,"+
+                "\"doubleIdentifierWithMultipleLeadingZerosBeforeDecimal\":0000000.1d,"+
+                "\"negativeDoubleIdentifierWithMultipleLeadingZerosBeforeDecimal\":-0000000.1d,"+
+                "\"doubleIdentifierWithMultipleLeadingZerosAfterDecimal\":0000000.0001d,"+
+                "\"negativeDoubleIdentifierWithMultipleLeadingZerosAfterDecimal\":-0000000.0001d,"+
                 "\"integerWithLeadingZeros\":000900,"+
                 "\"integerWithAllZeros\":00000,"+
-                "\"compositeWithLeadingZeros\":00800.90d"+
+                "\"compositeWithLeadingZeros\":00800.90d,"+
+                "\"decimalPositiveWithoutNumberBeforeDecimalPoint\":.90,"+
             "}";
         JSONObject jsonObject = new JSONObject(str);
         Object obj;
@@ -1083,7 +1089,7 @@ public class JSONObjectTest {
         assertTrue("hexNumber currently evaluates to string",
                 obj.equals("-0x123"));
         assertTrue( "tooManyZeros currently evaluates to string",
-                jsonObject.get( "tooManyZeros" ).equals("00"));
+                jsonObject.get( "tooManyZeros" ).equals(0));
         obj = jsonObject.get("negativeInfinite");
         assertTrue( "negativeInfinite currently evaluates to string",
                 obj.equals("-Infinity"));
@@ -1109,6 +1115,16 @@ public class JSONObjectTest {
                 jsonObject.get("floatIdentifier").equals(Double.valueOf(0.1)));
         assertTrue("doubleIdentifier currently evaluates to double 0.1",
                 jsonObject.get("doubleIdentifier").equals(Double.valueOf(0.1)));
+        assertTrue("doubleIdentifierWithMultipleLeadingZerosBeforeDecimal currently evaluates to double 0.1",
+                jsonObject.get("doubleIdentifierWithMultipleLeadingZerosBeforeDecimal").equals(Double.valueOf(0.1)));
+        assertTrue("negativeDoubleIdentifierWithMultipleLeadingZerosBeforeDecimal currently evaluates to double -0.1",
+                jsonObject.get("negativeDoubleIdentifierWithMultipleLeadingZerosBeforeDecimal").equals(Double.valueOf(-0.1)));
+        assertTrue("doubleIdentifierWithMultipleLeadingZerosAfterDecimal currently evaluates to double 0.0001",
+                jsonObject.get("doubleIdentifierWithMultipleLeadingZerosAfterDecimal").equals(Double.valueOf(0.0001)));
+        assertTrue("doubleIdentifierWithMultipleLeadingZerosAfterDecimal currently evaluates to double 0.0001",
+                jsonObject.get("doubleIdentifierWithMultipleLeadingZerosAfterDecimal").equals(Double.valueOf(0.0001)));
+        assertTrue("negativeDoubleIdentifierWithMultipleLeadingZerosAfterDecimal currently evaluates to double -0.0001",
+                jsonObject.get("negativeDoubleIdentifierWithMultipleLeadingZerosAfterDecimal").equals(Double.valueOf(-0.0001)));
         assertTrue("Integer does not evaluate to 900",
                 jsonObject.get("integerWithLeadingZeros").equals(900));
         assertTrue("Integer does not evaluate to 900",
@@ -1116,7 +1132,7 @@ public class JSONObjectTest {
         assertTrue("Integer does not evaluate to 900",
                 jsonObject.optInt("integerWithLeadingZeros")==900);
         assertTrue("Integer does not evaluate to 0",
-                jsonObject.get("integerWithAllZeros").equals("00000"));
+                jsonObject.get("integerWithAllZeros").equals(0));
         assertTrue("Integer does not evaluate to 0",
                 jsonObject.getInt("integerWithAllZeros")==0);
         assertTrue("Integer does not evaluate to 0",
@@ -1131,6 +1147,21 @@ public class JSONObjectTest {
                 jsonObject.getLong("compositeWithLeadingZeros")==800);
         assertTrue("Long does not evaluate to 800.90",
                 jsonObject.optLong("compositeWithLeadingZeros")==800);
+        assertEquals("Get long of decimalPositiveWithoutNumberBeforeDecimalPoint does not match",
+                0.9d,jsonObject.getDouble("decimalPositiveWithoutNumberBeforeDecimalPoint"),  0.0d);
+        assertEquals("Get long of decimalPositiveWithoutNumberBeforeDecimalPoint does not match",
+                0.9d,jsonObject.optDouble("decimalPositiveWithoutNumberBeforeDecimalPoint"),  0.0d);
+        assertEquals("Get long of decimalPositiveWithoutNumberBeforeDecimalPoint does not match",
+                0.0d,jsonObject.optLong("decimalPositiveWithoutNumberBeforeDecimalPoint"),  0.0d);
+
+        assertEquals("Get long of doubleIdentifierWithMultipleLeadingZerosAfterDecimal does not match",
+                0.0001d,jsonObject.getDouble("doubleIdentifierWithMultipleLeadingZerosAfterDecimal"),  0.0d);
+        assertEquals("Get long of doubleIdentifierWithMultipleLeadingZerosAfterDecimal does not match",
+                0.0001d,jsonObject.optDouble("doubleIdentifierWithMultipleLeadingZerosAfterDecimal"),  0.0d);
+        assertEquals("Get long of doubleIdentifierWithMultipleLeadingZerosAfterDecimal does not match",
+                0.0d, jsonObject.getLong("doubleIdentifierWithMultipleLeadingZerosAfterDecimal") , 0.0d);
+        assertEquals("Get long of doubleIdentifierWithMultipleLeadingZerosAfterDecimal does not match",
+                0.0d,jsonObject.optLong("doubleIdentifierWithMultipleLeadingZerosAfterDecimal"),  0.0d);
         Util.checkJSONObjectMaps(jsonObject);
     }
 
@@ -2361,7 +2392,7 @@ public class JSONObjectTest {
         }
         try {
             // test validity of invalid double 
-            JSONObject.testValidity(Double.NaN);
+            JSONObject.testValidity(NaN);
             fail("Expected an exception");
         } catch (JSONException e) { 
             assertTrue("", true);
diff --git a/src/test/java/org/json/junit/JsonNumberZeroTest.java b/src/test/java/org/json/junit/JsonNumberZeroTest.java
new file mode 100644
index 0000000..bfa4ca9
--- /dev/null
+++ b/src/test/java/org/json/junit/JsonNumberZeroTest.java
@@ -0,0 +1,55 @@
+package org.json.junit;
+
+import org.json.JSONObject;
+import org.junit.Test;
+
+import java.math.BigDecimal;
+import java.math.BigInteger;
+
+import static org.junit.Assert.assertEquals;
+
+public class JsonNumberZeroTest {
+
+    @Test
+    public void shouldParseNegativeZeroValueWithMultipleZeroDigit(){
+        JSONObject jsonObject = new JSONObject("{value:-0000}");
+        assertEquals("Float not recognized", -0f, jsonObject.getFloat("value"), 0.0f);
+        assertEquals("Float not recognized", -0f, jsonObject.optFloat("value"), 0.0f);
+        assertEquals("Float not recognized", -0f, jsonObject.optFloatObject("value"), 0.0f);
+        assertEquals("Double not recognized", -0d, jsonObject.optDouble("value"), 0.0f);
+        assertEquals("Double not recognized", -0.0d, jsonObject.optDoubleObject("value"), 0.0f);
+        assertEquals("Double not recognized", -0.0d, jsonObject.getDouble("value"), 0.0f);
+        assertEquals("Long not recognized", 0, jsonObject.optLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.getLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.optLongObject("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.getInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optIntegerObject("value"), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").intValue(), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").longValue(), 0);
+        assertEquals("BigDecimal not recognized", 0, BigDecimal.valueOf(-0).compareTo(jsonObject.getBigDecimal("value")));
+        assertEquals("BigInteger not recognized",0, BigInteger.valueOf(0).compareTo(jsonObject.getBigInteger("value")));
+    }
+
+    @Test
+    public void shouldParseZeroValueWithMultipleZeroDigit(){
+        JSONObject jsonObject = new JSONObject("{value:0000}");
+        assertEquals("Float not recognized", 0f, jsonObject.getFloat("value"), 0.0f);
+        assertEquals("Float not recognized", 0f, jsonObject.optFloat("value"), 0.0f);
+        assertEquals("Float not recognized", 0f, jsonObject.optFloatObject("value"), 0.0f);
+        assertEquals("Double not recognized", 0d, jsonObject.optDouble("value"), 0.0f);
+        assertEquals("Double not recognized", 0.0d, jsonObject.optDoubleObject("value"), 0.0f);
+        assertEquals("Double not recognized", 0.0d, jsonObject.getDouble("value"), 0.0f);
+        assertEquals("Long not recognized", 0, jsonObject.optLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.getLong("value"), 0);
+        assertEquals("Long not recognized", 0, jsonObject.optLongObject("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.getInt("value"), 0);
+        assertEquals("Integer not recognized", 0, jsonObject.optIntegerObject("value"), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").intValue(), 0);
+        assertEquals("Number not recognized", 0, jsonObject.getNumber("value").longValue(), 0);
+        assertEquals("BigDecimal not recognized", 0, BigDecimal.valueOf(-0).compareTo(jsonObject.getBigDecimal("value")));
+        assertEquals("BigInteger not recognized",0, BigInteger.valueOf(0).compareTo(jsonObject.getBigInteger("value")));
+    }
+
+}