make CI failure with unexpected result

-- Initialize real result with optional empty so that test can wait for
right result and pass.

Author: yunhanw-google

examples/java-matter-controller/java/src/com/matter/controller/Main.java

@@ -112,10 +112,13 @@ public static void main(String[] args) {
 
     try {
       commandManager.run(args);
-    } catch (IllegalArgumentException e) {
+    }
+    catch (IllegalArgumentException e) {
       logger.log(Level.INFO, "Arguments init failed with exception: " + e.getMessage());
+      System.exit(1);
     } catch (Exception e) {
       logger.log(Level.INFO, "Run command failed with exception: " + e.getMessage());
+      System.exit(1);
     }
     controller.shutdownCommissioning();
   }

examples/java-matter-controller/java/src/com/matter/controller/commands/common/CommandManager.java

@@ -36,7 +36,7 @@ public final void register(String clusterName, ArrayList<Command> commandsList)
     mClusters.put(clusterName, commandsList);
   }
 
-  public final void run(String[] args) {
+  public final void run(String[] args) throws Exception {
     Command command;
 
     if (args.length < 1) {
@@ -102,8 +102,10 @@ public final void run(String[] args) {
     } catch (IllegalArgumentException e) {
       System.out.println("Run command failed with exception: " + e.getMessage());
       showCommand(args[0], command);
+      throw e;
     } catch (Exception e) {
       logger.log(Level.INFO, "Run command failed with exception: " + e.getMessage());
+      throw e;
     }
   }