Fix files with windows line endings + Add checkstyle rule to catch this issue

Change-Id: Ic1905f2121c5c2ab66259f7f531c1e36fe58e9d4
diff --git a/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/AreaId.java b/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/AreaId.java
index 79a326d..f3c3b5d 100644
--- a/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/AreaId.java
+++ b/apps/iptopology-api/src/main/java/org/onosproject/iptopology/api/AreaId.java
@@ -1,70 +1,70 @@
-/*

- * Copyright 2015 Open Networking Laboratory

- *

- * Licensed under the Apache License, Version 2.0 (the "License");

- * you may not use this file except in compliance with the License.

- * You may obtain a copy of the License at

- *

- *     http://www.apache.org/licenses/LICENSE-2.0

- *

- * Unless required by applicable law or agreed to in writing, software

- * distributed under the License is distributed on an "AS IS" BASIS,

- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

- * See the License for the specific language governing permissions and

- * limitations under the License.

- */

-package org.onosproject.iptopology.api;

-

-import static com.google.common.base.MoreObjects.toStringHelper;

-

-import java.util.Objects;

-

-/**

- * Area identifier class (32 Bit Area-ID).

- */

-public class AreaId {

-    private final int areaId;

-

-    /**

-     * Constructor to set area identifier.

-     *

-     * @param areaId area id

-     */

-    public AreaId(int areaId) {

-        this.areaId = areaId;

-    }

-

-    /**

-     * obtain area identifier.

-     *

-     * @return area identifier

-     */

-    public int areaId() {

-        return areaId;

-    }

-

-    @Override

-    public int hashCode() {

-        return Objects.hash(areaId);

-    }

-

-    @Override

-    public boolean equals(Object obj) {

-        if (this == obj) {

-            return true;

-        }

-

-        if (obj instanceof AreaId) {

-            AreaId other = (AreaId) obj;

-            return Objects.equals(areaId, other.areaId);

-        }

-        return false;

-    }

-

-    @Override

-    public String toString() {

-        return toStringHelper(this)

-                .add("areaId", areaId)

-                .toString();

-    }

+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.iptopology.api;
+
+import static com.google.common.base.MoreObjects.toStringHelper;
+
+import java.util.Objects;
+
+/**
+ * Area identifier class (32 Bit Area-ID).
+ */
+public class AreaId {
+    private final int areaId;
+
+    /**
+     * Constructor to set area identifier.
+     *
+     * @param areaId area id
+     */
+    public AreaId(int areaId) {
+        this.areaId = areaId;
+    }
+
+    /**
+     * obtain area identifier.
+     *
+     * @return area identifier
+     */
+    public int areaId() {
+        return areaId;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(areaId);
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+
+        if (obj instanceof AreaId) {
+            AreaId other = (AreaId) obj;
+            return Objects.equals(areaId, other.areaId);
+        }
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return toStringHelper(this)
+                .add("areaId", areaId)
+                .toString();
+    }
 }
\ No newline at end of file