Java: Fix benchmarkApp to support port (valkey-io#2170)

* Java: Add port and examples for benchmark app

Signed-off-by: Andrew Carbonetto <[email protected]>

java/README.md

@@ -271,11 +271,21 @@ For more examples, you can refer to the test folder [unit tests](./client/src/te
 
 You can run benchmarks using `./gradlew run`. You can set arguments using the args flag like:
 
+Returns the command help output
 ```shell
 ./gradlew run --args="--help"
+```
+
+Runs all benchmark clients against a local instance with TLS enabled using data sizing 100 and 1000 bytes, 10 and 100 concurrent tasks, 1 and 5 parallel clients.
+```shell
 ./gradlew run --args="--resultsFile=output --dataSize \"100 1000\" --concurrentTasks \"10 100\" --clients all --host localhost --port 6279 --clientCount \"1 5\" --tls"
 ```
 
+Runs GLIDE client against a local cluster instance on port 52756 using data sizing 4000 bytes, and 1000 concurrent tasks.
+```shell
+./gradlew run --args="--resultsFile=output --dataSize \"4000\" --concurrentTasks \"1000\" --clients glide --host 127.0.0.1 --port 52746 --clusterModeEnabled"
+```
+
 The following arguments are accepted:
 * `resultsFile`: the results output file
 * `concurrentTasks`: number of concurrent tasks

java/benchmarks/src/main/java/glide/benchmarks/BenchmarkingApp.java

@@ -176,6 +176,10 @@ private static RunConfiguration verifyOptions(CommandLine line) throws ParseExce
             runConfiguration.host = line.getOptionValue("host");
         }
 
+        if (line.hasOption("port")) {
+            runConfiguration.port = Integer.parseInt(line.getOptionValue("port"));
+        }
+
         if (line.hasOption("clientCount")) {
             runConfiguration.clientCount = parseIntListOption(line.getOptionValue("clientCount"));
         }