Minor enhancements in Log.java and LogFilter.java

- in LogFilter's toString() method put "topics" value as List, otherwise topics field becomes of string data type
- add method getLogData() to class Log
- fix typo in method name getTransactionIndex()

Author: omurovch

src/bindings/java/in3/eth1/Log.java

@@ -87,7 +87,7 @@ public int getLogIndex() {
      * integer of the transactions index position log was created from. null when
      * its pending log.
      */
-    public int gettTansactionIndex() {
+    public int getTransactionIndex() {
         return JSON.asInt(data.get("transactionIndex"));
     }
 
@@ -132,4 +132,11 @@ public String[] getTopics() {
         return data.getStringArray("topics");
     }
 
+    /*
+     * data param of Log (contains the non-indexed arguments of the log)
+     */
+    public String getLogData() {
+        return data.getString("data");
+    }
+
 }

src/bindings/java/in3/eth1/LogFilter.java

@@ -118,7 +118,7 @@ public String toString() {
         if (toBlock >= 0)
             JSON.appendKey(sb, "toBlock", "0x" + Long.toHexString(toBlock));
         if (topics != null)
-            JSON.appendKey(sb, "topics", JSON.toJson(topics));
+            JSON.appendKey(sb, "topics", topics);
         if (limit > 0)
             JSON.appendKey(sb, "limit", JSON.asString(limit));
         if (address != null)