import replica code from assignment

1 files changed, 27 insertions, 0 deletions

diff --git a/src/main/java/derms/replica/replica1/Hosts.java b/src/main/java/derms/replica/replica1/Hosts.java
new file mode 100644
index 0000000..fed377e
--- /dev/null
+++ b/src/main/java/derms/replica/replica1/Hosts.java
@@ -0,0 +1,27 @@
+package derms.replica.replica1;
+
+import java.net.UnknownHostException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.NoSuchElementException;
+
+public class Hosts {
+    private static Map<City, String> hosts = null;
+
+    public static String get(City city) throws UnknownHostException {
+        if (hosts == null)
+            init();
+
+        String host = hosts.get(city);
+        if (host == null)
+            throw new UnknownHostException("unknown host: "+city);
+        return host;
+    }
+
+    private static void init() {
+        hosts = new HashMap<City, String>();
+        hosts.put(new City("MTL"), "alpine1");
+        hosts.put(new City("QUE"), "alpine2");
+        hosts.put(new City("SHE"), "alpine3");
+    }
+}