fix spacing issues

Author: aoberoi

src/main/java/com/opentok/OpenTok.java

@@ -284,7 +284,7 @@ public Session createSession(SessionProperties properties) throws OpenTokExcepti
                 return new Session(readXml(xpathQuery, xmlResponse), apiKey, apiSecret);
             }
         } catch (XPathExpressionException e) {
-            throw new OpenTokException("Cannot create session. Could not read the response: "+xmlResponse);
+            throw new OpenTokException("Cannot create session. Could not read the response: " + xmlResponse);
         }
     }
 

src/main/java/com/opentok/SessionProperties.java

@@ -32,7 +32,7 @@ public static class Builder {
 
         public Builder location(String location) throws InvalidArgumentException {
             if (!InetAddressValidator.getInstance().isValidInet4Address(location)) {
-                throw new InvalidArgumentException("Location must be a valid IPv4 address. location="+location);
+                throw new InvalidArgumentException("Location must be a valid IPv4 address. location = " + location);
             }
             this.location = location;
             return this;

src/main/java/com/opentok/TokenOptions.java

@@ -54,7 +54,7 @@ public Builder data(String data) throws InvalidArgumentException {
                 this.data = data;
             } else {
                 throw new InvalidArgumentException(
-                        "The given connection data is too long, limit is 1000 characters: "+data.length());
+                        "The given connection data is too long, limit is 1000 characters: " + data.length());
             }
             return this;
         }

src/main/java/com/opentok/util/HttpClient.java

@@ -62,7 +62,7 @@ public String createSession(Map<String, Collection<String>> params) {
     public String getArchive(String archiveId) {
         String responseString = null;
         Future<Response> request = null;
-        String url = this.apiUrl+"/v2/partner/"+this.apiKey+"/archive/"+archiveId;
+        String url = this.apiUrl + "/v2/partner/" + this.apiKey + "/archive/" + archiveId;
 
         try {
             request = this.prepareGet(url).execute();
@@ -93,7 +93,7 @@ public String getArchives(int offset, int count) {
         String responseString = null;
         Future<Response> request = null;
         // TODO: maybe use a StringBuilder?
-        String url = this.apiUrl+"/v2/partner/"+this.apiKey+"/archive";
+        String url = this.apiUrl + "/v2/partner/" + this.apiKey + "/archive";
         if (offset != 0 || count != 1000) {
             url += "?";
             if (offset != 0) {
@@ -134,7 +134,7 @@ public String startArchive(String sessionId, String name) {
         Future<Response> request = null;
         String requestBody = null;
         // TODO: maybe use a StringBuilder?
-        String url = this.apiUrl+"/v2/partner/"+this.apiKey+"/archive";
+        String url = this.apiUrl + "/v2/partner/" + this.apiKey + "/archive";
 
         ObjectMapper mapper = new ObjectMapper();
         HashMap<String, String> jsonBody = new HashMap<String, String>();
@@ -179,7 +179,7 @@ public String stopArchive(String archiveId) {
         String responseString = null;
         Future<Response> request = null;
         // TODO: maybe use a StringBuilder?
-        String url = this.apiUrl+"/v2/partner/"+this.apiKey+"/archive/stop";
+        String url = this.apiUrl + "/v2/partner/" + this.apiKey + "/archive/stop";
 
         try {
             request = this.preparePost(url).execute();
@@ -208,7 +208,7 @@ public String stopArchive(String archiveId) {
     public String deleteArchive(String archiveId) {
         String responseString = null;
         Future<Response> request = null;
-        String url = this.apiUrl+"/v2/partner/"+this.apiKey+"/archive/"+archiveId;
+        String url = this.apiUrl + "/v2/partner/" + this.apiKey + "/archive/" + archiveId;
 
         try {
             request = this.prepareDelete(url).execute();