Getting “java.lang.NoClassDefFoundError: com/beust/jcommander/ParameterException”Exception

Question

I wanted to invoke testng programmatically. Not eclipse plug-in.

I have associated \"testng-6.8.21.jar\" and running through eclipse and i ran below code:

Answer 1

Change:

Class cls = Class.forName("TestSuite.TestCases.AddContactHappyPath").getClass();
test.setTestClasses(new Class[] { cls });

By:

 test.setTestClasses(new Class[] { AddContactHappyPath.class });

All code is

import org.testng.TestNG;
import com.xxx.test.others.AddContactHappyPath;

public class SampCls {
    public static void main(String[] args) throws ClassNotFoundException {
        TestNG test = new TestNG();
         test.setTestClasses(new Class[] { AddContactHappyPath.class });
         test.run();
    }
}

TestNG code is:

import org.testng.annotations.*;

public class AddContactHappyPath {

    @Test()
    public void AddContactHappyPathTest() {
        System.out.println("hello world");
    }
}

Console result:

[TestNG] Running:
  Command line suite

hello world

===============================================
Command line suite
Total tests run: 1, Failures: 0, Skips: 0
===============================================