OMID-171 Fix checkstyle warnings of common module

Author: chia7712

common/src/main/java/org/apache/omid/NetworkUtils.java

@@ -15,18 +15,19 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.apache.omid;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import java.net.DatagramSocket;
 import java.net.InetAddress;
 import java.net.NetworkInterface;
 import java.net.SocketException;
 import java.util.Collections;
 import java.util.Enumeration;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 public class NetworkUtils {
 
     private static final Logger LOG = LoggerFactory.getLogger(NetworkUtils.class);
@@ -36,7 +37,7 @@ public class NetworkUtils {
 
     public static String getDefaultNetworkInterface() {
 
-        try (DatagramSocket s=new DatagramSocket()) {
+        try (DatagramSocket s = new DatagramSocket()) {
             s.connect(InetAddress.getByAddress(new byte[]{1,1,1,1}), 0);
             return NetworkInterface.getByInetAddress(s.getLocalAddress()).getName();
         } catch (Exception e) {
@@ -51,13 +52,14 @@ public static String getDefaultNetworkInterface() {
                 NetworkInterface nextElement = networkInterfaces.nextElement();
                 String name = nextElement.getDisplayName();
                 LOG.info("Iterating over network interfaces, found '{}'", name);
-                boolean hasInet = Collections.list(nextElement.getInetAddresses()).size() > 1; // Checking that inet exists, to avoid taking iBridge
+                // Checking that inet exists, to avoid taking iBridge
+                boolean hasInet = Collections.list(nextElement.getInetAddresses()).size() > 1;
                 if (hasInet && fallBackName == null) {
                     fallBackName = name;
                 }
-                if ((name.startsWith(MAC_TSO_NET_IFACE_PREFIX) && hasInet ) ||
-                        name.startsWith(LINUX_TSO_NET_IFACE_PREFIX)) {
-                  return name;
+                if ((name.startsWith(MAC_TSO_NET_IFACE_PREFIX) && hasInet )
+                    || name.startsWith(LINUX_TSO_NET_IFACE_PREFIX)) {
+                    return name;
                 }
             }
             if (fallBackName != null) {

common/src/main/java/org/apache/omid/ReflectionHelper.java

@@ -15,14 +15,15 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.apache.omid;
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
 public class ReflectionHelper {
 
-    static public <T> Object invokeParameterlessMethod(T theObject, String methodName)
+    public static <T> Object invokeParameterlessMethod(T theObject, String methodName)
             throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
 
         Method method = theObject.getClass().getDeclaredMethod(methodName, null);

common/src/main/java/org/apache/omid/YAMLUtils.java

@@ -15,11 +15,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.apache.omid;
 
+import org.apache.commons.beanutils.BeanUtils;
 import org.apache.phoenix.thirdparty.com.google.common.base.Preconditions;
 import org.apache.phoenix.thirdparty.com.google.common.io.Resources;
-import org.apache.commons.beanutils.BeanUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.yaml.snakeyaml.Yaml;
@@ -56,7 +57,8 @@ public void loadSettings(String resourcePath, Object bean) {
     @SuppressWarnings("unchecked")
     public Map loadSettings(String resourcePath, String defaultResourcePath) throws IOException {
         Map defaultSetting = loadAsMap(defaultResourcePath);
-        Preconditions.checkState(defaultSetting.size() > 0, String.format("Failed to load file '%s' from classpath", defaultResourcePath));
+        Preconditions.checkState(defaultSetting.size() > 0,
+            String.format("Failed to load file '%s' from classpath", defaultResourcePath));
         if (resourcePath != null) {
             Map userSetting = loadAsMap(resourcePath);
             defaultSetting.putAll(userSetting);

common/src/main/java/org/apache/omid/zk/ZKUtils.java

@@ -15,6 +15,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.apache.omid.zk;
 
 import org.apache.curator.RetryPolicy;