get Exception com.beust.jcommander.ParameterException when creating instance of TestNG

[nir heifetz]

i'm newbie in TestNG and trying to run TestNG suites from the command line when running the following code i get the exception

.AutoTestNGShellRunner.main(AutoTestNGShellRunner.java:43) Caused by: java.lang.ClassNotFoundException: com.beust.jcommander.ParameterException

import org.testng.ITestResult;
import org.testng.TestListenerAdapter;
import org.testng.TestNG;

import java.util.Arrays;
import java.util.List;


public class AutoTestNGShellRunner {
    static Class<?> autotestClass;


    public static void main(final String[] args) {
        int rc;
        if (args.length != 2) {
            System.err.println("Usage: AutoTestNGShellRunner  <TEST_SCENARIO_CLASS_NAME> <TEST_CASE>");
            System.exit(-1);
        }

          final String testsuite = args[0];
          final String testcase = args[1];

        try {
            autotestClass = Class.forName(testsuite);

        } catch (final ClassNotFoundException e) {
            e.printStackTrace();
            throw new RuntimeException("class" + testsuite + " is not found ", e);
        }

        TestListenerAdapter tla = new TestListenerAdapter();
        TestNG testng = new TestNG();
        testng.setTestClasses(new Class[] {autotestClass });
        testng.setTestNames(Arrays.asList(testcase));

        testng.addListener(tla);
        testng.run();
        List<ITestResult> failedTestsResults =  tla.getFailedTests();

        final int failureCount = failedTestsResults.size();



    if (failureCount == 0) {
        Logging.getLogger().info(String.format("Test case %s passed\n", testcase));
        rc = 0;
    } else {
        Logging.getLogger().error(String.format("Test case %s failed\n", testcase));
        rc = -1;
    }

    System.exit(rc);
}

}

**I added the following to my gradle.build:**

dependencies {

compile "com.beust.jcommander:1.30
}

Thanks in advance