Minor clean up (unused imports, serial…)

json-path/src/main/java/com/jayway/jsonpath/IndefinitePathException.java

@@ -6,6 +6,7 @@ package com.jayway.jsonpath;
  * Date: 3/4/12
  * Time: 7:15 PM
  */
+@SuppressWarnings("serial")
 public class IndefinitePathException extends RuntimeException {
 
 

json-path/src/main/java/com/jayway/jsonpath/InvalidJsonException.java

@@ -17,6 +17,7 @@ package com.jayway.jsonpath;
 /**
  * @author Kalle Stenflo
  */
+@SuppressWarnings("serial")
 public class InvalidJsonException extends RuntimeException {
 
     public InvalidJsonException() {

json-path/src/main/java/com/jayway/jsonpath/InvalidModelPathException.java

@@ -6,6 +6,7 @@ package com.jayway.jsonpath;
  * Date: 3/4/12
  * Time: 2:38 PM
  */
+@SuppressWarnings("serial")
 public class InvalidModelPathException extends RuntimeException {
 
     public InvalidModelPathException() {

json-path/src/main/java/com/jayway/jsonpath/InvalidPathException.java

@@ -17,6 +17,7 @@ package com.jayway.jsonpath;
 /**
  * @author Kalle Stenflo
  */
+@SuppressWarnings("serial")
 public class InvalidPathException extends RuntimeException {
 
     public InvalidPathException() {

json-path/src/main/java/com/jayway/jsonpath/internal/filter/ArrayEvalFilter.java

@@ -73,7 +73,7 @@ public class ArrayEvalFilter extends PathTokenFilter {
         if (!jsonProvider.isMap(check)) {
             return false;
         }
-        Map obj = jsonProvider.toMap(check);
+        Map<String, Object> obj = jsonProvider.toMap(check);
 
         if (!obj.containsKey(conditionStatement.getField())) {
             return false;