Simplify constant Map

This also avoids a Java complaint about missing a serial version uid
VevoLiang · Feb 25, 2016 · ff6d254 · ff6d254
1 parent 54510bc
commit ff6d254
Showing 1 changed file with 8 additions and 10 deletions.
diff --git a/shell/src/main/java/alluxio/shell/AlluxioShell.java b/shell/src/main/java/alluxio/shell/AlluxioShell.java
@@ -18,6 +18,7 @@
 import alluxio.util.CommonUtils;
 
 import com.google.common.base.Throwables;
+import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Maps;
 import org.apache.commons.cli.CommandLine;
 import org.apache.commons.lang.ArrayUtils;
@@ -30,7 +31,6 @@
 import java.io.IOException;
 import java.lang.reflect.Modifier;
 import java.util.Arrays;
-import java.util.HashMap;
 import java.util.Map;
 import java.util.SortedSet;
 import java.util.TreeSet;
@@ -43,15 +43,13 @@
 @NotThreadSafe
 public class AlluxioShell implements Closeable {
   private static final Logger LOG = LoggerFactory.getLogger(Constants.LOGGER_TYPE);
-  private static final HashMap<String, String[]> CMD_ALIAS = new HashMap<String, String[]>() {
-    {
-      put("chgrpr", new String[] {"chgrp", "-R"});
-      put("chmodr", new String[] {"chmod", "-R"});
-      put("chownr", new String[] {"chown", "-R"});
-      put("lsr", new String[] {"ls", "-R"});
-      put("rmr", new String[] {"rm", "-R"});
-    }
-  };
+  private static final Map<String, String[]> CMD_ALIAS = ImmutableMap.<String, String[]> builder()
+      .put("chgrpr", new String[] {"chgrp", "-R"})
+      .put("chmodr", new String[] {"chmod", "-R"})
+      .put("chownr", new String[] {"chown", "-R"})
+      .put("lsr", new String[] {"ls", "-R"})
+      .put("rmr", new String[] {"rm", "-R"})
+      .build();
 
   /**
    * Main method, starts a new AlluxioShell.