How to create Runner class in Cucumber using Java

/**
 * This is a sample Test Runner class using junit 
 * Values an be provided as per the requirements
 */

package runner;

import org.junit.runner.RunWith;

import io.cucumber.junit.Cucumber;
import io.cucumber.junit.CucumberOptions;

@RunWith(Cucumber.class)
@CucumberOptions(
	features = {"src/test/resources/features"},
	glue= {"stepsdefs","support"},
	tags= "P2"
	plugin= {"html:target/cucumber-html-report", "json:target/cucumber-json-report.json"} ,
	monochrome= true,
	strict= true,
	dryRun= false

	)
public class TestRunner {

}

Runner Class in cucumber using Java and TestNG

This differs from Runner class using JUNIT a little. TestNG does not use @RunWith. Instead, we’ll use the @CucumberOptions annotation with TestNG’s AbstractTestNGCucumberTests class

package runner;

import io.cucumber.testng.AbstractTestNGCucumberTests;
import io.cucumber.testng.CucumberOptions;
import org.testng.annotations.DataProvider;

@CucumberOptions(
    features = {"src/test/resources/features"},  // Path to the feature files
    glue = {"stepsdefs", "support"},             // Package containing step definitions
    tags = "@P2",                                // Tag to filter test execution
    plugin = {"html:target/cucumber-html-report", "json:target/cucumber-json-report.json"},  // Reporting plugins
    monochrome = true,                           // Better console output formatting
    strict = true,                               // Fail the execution if there are undefined steps
    dryRun = false                               // Set to true to check mapping of steps without execution
)
public class TestRunner extends AbstractTestNGCucumberTests {

    // This method allows parallel execution of tests if enabled in TestNG
    @Override
    @DataProvider(parallel = true)
    public Object[][] scenarios() {
        return super.scenarios();
    }
}

What are the Changes:

1. TestNG Inheritance:

Instead of using @RunWith (specific to JUnit), TestNG uses inheritance from AbstractTestNGCucumberTests. This class enables Cucumber to run in the TestNG environment.

2. DataProvider for Parallel Execution:

@DataProvider(parallel = true) allows the tests to run in parallel. If you don’t want parallel execution, you can set parallel = false or remove the DataProvider method altogether.

3. CucumberOptions:

The @CucumberOptions annotation remains the same, controlling features, glue code, tags, and reporting formats.

4. JUnit Removal:

Removed @RunWith(Cucumber.class) since it is not required in TestNG. Instead, TestNG automatically picks up AbstractTestNGCucumberTests for execution.