diff --git a/core/src/main/java/org/everit/json/schema/StringToValueConverter.java b/core/src/main/java/org/everit/json/schema/StringToValueConverter.java
index eede2d5c..6bf41ff4 100644
--- a/core/src/main/java/org/everit/json/schema/StringToValueConverter.java
+++ b/core/src/main/java/org/everit/json/schema/StringToValueConverter.java
@@ -86,11 +86,21 @@ static Object stringToValue(String string) {
     }
 
     private static boolean isDecimalNotation(final String val) {
-        return val.indexOf('.') > -1 || val.indexOf('e') > -1
-                || val.indexOf('E') > -1 || "-0".equals(val);
+
+        //Applied the REFACTORING method: "Introduce explaining variable"
+        /*creating a new variable to hold the result of a complex expression or calculation*/
+        
+        boolean containsDecimalPoint = val.indexOf('.') > -1;
+        boolean containsExponent = val.indexOf('e') > -1 || val.indexOf('E') > -1;
+        boolean isNegativeZero = "-0".equals(val);
+        
+        return containsDecimalPoint || containsExponent || isNegativeZero;
+
+        // return val.indexOf('.') > -1 || val.indexOf('e') > -1
+        //         || val.indexOf('E') > -1 || "-0".equals(val);
     }
 
-    private static Number stringToNumber(final String val) throws NumberFormatException {
+    /*private static Number stringToNumber(final String val) throws NumberFormatException {
         char initial = val.charAt(0);
         if ((initial >= '0' && initial <= '9') || initial == '-') {
             // decimal representation
@@ -148,5 +158,77 @@ private static Number stringToNumber(final String val) throws NumberFormatExcept
             return bi;
         }
         throw new NumberFormatException("val ["+val+"] is not a valid number.");
+    }*/
+
+    private static Number stringToNumber(final String val) throws NumberFormatException {
+        //Applied the REFACTORING method: "Decompose conditional:"
+        /*breaking down a long, complex conditional statement into smaller, more manageable pieces.*/
+        char initial = val.charAt(0);
+        if (isValidInitialChar(initial)) {
+            if (isDecimalNotation(val)) {
+                return parseDecimal(val, initial);
+            }
+            if (isInvalidOctalNumber(val)) {
+                throw new NumberFormatException("val ["+val+"] is not a valid number.");
+            }
+            return parseInteger(val);
+        }
+        throw new NumberFormatException("val ["+val+"] is not a valid number.");
+    }
+
+    private static boolean isValidInitialChar(char initial) {
+        return (initial >= '0' && initial <= '9') || initial == '-';
     }
+
+
+    private static Number parseDecimal(String val, char initial) {
+        // Use a BigDecimal all the time so we keep the original
+        // representation. BigDecimal doesn't support -0.0, ensure we
+        // keep that by forcing a decimal.
+        try {
+            BigDecimal bd = new BigDecimal(val);
+            if (initial == '-' && BigDecimal.ZERO.compareTo(bd) == 0) {
+                return Double.valueOf(-0.0);
+            }
+            return bd;
+        } catch (NumberFormatException retryAsDouble) {
+            // this is to support "Hex Floats" like this: 0x1.0P-1074
+            try {
+                Double d = Double.valueOf(val);
+                if (d.isNaN() || d.isInfinite()) {
+                    throw new NumberFormatException("val [" + val + "] is not a valid number.");
+                }
+                return d;
+            } catch (NumberFormatException ignore) {
+                throw new NumberFormatException("val [" + val + "] is not a valid number.");
+            }
+        }
+    }
+
+    private static boolean isInvalidOctalNumber(String val) {
+        if (val.length() > 1 && val.charAt(0) == '0') {
+            char at1 = val.charAt(1);
+            if (at1 >= '0' && at1 <= '9') {
+                return true;
+            }
+        } else if (val.length() > 2 && val.charAt(0) == '-' && val.charAt(1) == '0') {
+            char at2 = val.charAt(2);
+            if (at2 >= '0' && at2 <= '9') {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private static Number parseInteger(String val) {
+        BigInteger bi = new BigInteger(val);
+        if (bi.bitLength() <= 31) {
+            return Integer.valueOf(bi.intValue());
+        }
+        if (bi.bitLength() <= 63) {
+            return Long.valueOf(bi.longValue());
+        }
+        return bi;
+    }
+
 }
diff --git a/core/src/main/java/org/everit/json/schema/loader/JsonPointerEvaluator.java b/core/src/main/java/org/everit/json/schema/loader/JsonPointerEvaluator.java
index 0d3a8d3d..1431a487 100644
--- a/core/src/main/java/org/everit/json/schema/loader/JsonPointerEvaluator.java
+++ b/core/src/main/java/org/everit/json/schema/loader/JsonPointerEvaluator.java
@@ -73,20 +73,26 @@ public JsonValue getQueryResult() {
     }
 
     private static JsonObject executeWith(final SchemaClient client, final String url) {
-        String resp = null;
+        //String resp = null;
+        //Applied the REFACTORING method: "Rename variable" to variables resp & reader
+        /*rename variable to a more meaning full name */
+        String response = null; 
+
         BufferedReader buffReader = null;
-        InputStreamReader reader = null;
+        
+        //InputStreamReader reader = null;
+        InputStreamReader inputReader = null; 
         try {
             InputStream responseStream = client.get(url);
-            reader = new InputStreamReader(responseStream, Charset.defaultCharset());
-            buffReader = new BufferedReader(reader);
+            inputReader = new InputStreamReader(responseStream, Charset.defaultCharset());
+            buffReader = new BufferedReader(inputReader);
             String line;
             StringBuilder strBuilder = new StringBuilder();
             while ((line = buffReader.readLine()) != null) {
                 strBuilder.append(line);
             }
-            resp = strBuilder.toString();
-            return new JsonObject(toMap(new JSONObject(new JSONTokener(resp))));
+            response = strBuilder.toString();
+            return new JsonObject(toMap(new JSONObject(new JSONTokener(response))));
         } catch (IOException e) {
             throw new UncheckedIOException(e);
         } catch (JSONException e) {
@@ -96,8 +102,8 @@ private static JsonObject executeWith(final SchemaClient client, final String ur
                 if (buffReader != null) {
                     buffReader.close();
                 }
-                if (reader != null) {
-                    reader.close();
+                if (inputReader != null) {
+                    inputReader.close();
                 }
             } catch (IOException e) {
                 throw new UncheckedIOException(e);
diff --git a/core/src/main/java/org/everit/json/schema/loader/SchemaExtractor.java b/core/src/main/java/org/everit/json/schema/loader/SchemaExtractor.java
index f721c7df..1e6f4e4c 100644
--- a/core/src/main/java/org/everit/json/schema/loader/SchemaExtractor.java
+++ b/core/src/main/java/org/everit/json/schema/loader/SchemaExtractor.java
@@ -100,14 +100,14 @@ abstract class AbstractSchemaExtractor implements SchemaExtractor {
 
     final SchemaLoader defaultLoader;
 
-    private ExclusiveLimitHandler exclusiveLimitHandler;
+    ExclusiveLimitHandler exclusiveLimitHandler;
 
     AbstractSchemaExtractor(SchemaLoader defaultLoader) {
         this.defaultLoader = requireNonNull(defaultLoader, "defaultLoader cannot be null");
     }
 
     @Override
-    public final ExtractionResult extract(JsonObject schemaJson) {
+    public ExtractionResult extract(JsonObject schemaJson) {
         this.schemaJson = requireNonNull(schemaJson, "schemaJson cannot be null");
         this.exclusiveLimitHandler = ExclusiveLimitHandler.ofSpecVersion(config().specVersion);
         consumedKeys = new KeyConsumer(schemaJson);
@@ -167,6 +167,39 @@ StringSchema.Builder buildStringSchema() {
 
     abstract List<Schema.Builder<?>> extract();
 }
+class NumberSchemaExtractor  extends AbstractSchemaExtractor {
+
+    private JsonObject schemaJson = null;
+    private final ExclusiveLimitHandler exclusiveLimitHandler;
+    NumberSchemaExtractor(SchemaLoader defaultLoader) {
+        super(defaultLoader);
+        this.schemaJson = schemaJson;
+        this.exclusiveLimitHandler = ExclusiveLimitHandler.ofSpecVersion(config().specVersion);
+
+    }
+
+    public ExtractionResult extract(JsonObject schemaJson) {
+        KeyConsumer consumedKeys = null;
+        PropertySnifferSchemaExtractor.NUMBER_SCHEMA_PROPS.forEach(consumedKeys::keyConsumed);
+        NumberSchema.Builder builder = NumberSchema.builder();
+        maybe("minimum").map(JsonValue::requireNumber).ifPresent(builder::minimum);
+        maybe("maximum").map(JsonValue::requireNumber).ifPresent(builder::maximum);
+        maybe("multipleOf").map(JsonValue::requireNumber).ifPresent(multipleOf -> {
+            if (BigDecimal.ZERO.compareTo(BigDecimal.valueOf(multipleOf.doubleValue())) == 0) {
+                throw new SchemaException(schemaJson.ls.locationOfCurrentObj(), "multipleOf should not be 0");
+            }
+            builder.multipleOf(multipleOf);
+        });
+        maybe("exclusiveMinimum").ifPresent(exclMin -> exclusiveLimitHandler.handleExclusiveMinimum(exclMin, builder));
+        maybe("exclusiveMaximum").ifPresent(exclMax -> exclusiveLimitHandler.handleExclusiveMaximum(exclMax, builder));
+        return new ExtractionResult(consumedKeys.collect(), singletonList(builder));
+    }
+
+    @Override
+    List<Schema.Builder<?>> extract() {
+        return null;
+    }
+}
 
 class EnumSchemaExtractor extends AbstractSchemaExtractor {