Sample code for https://stackoverflow.com/q/44518748/679824

console.log

...
... TestNG 6.11 by Cédric Beust ([email protected])
...
Executing : com.rationaleemotions.stackoverflow.qn44518748.SampleClassOne.testMethodA() on thread [ 11]
Executing : com.rationaleemotions.stackoverflow.qn44518748.SampleClassTwo.testMethodA() on thread [ 11]
Executing : com.rationaleemotions.stackoverflow.qn44518748.SampleClassOne.testMethodB() on thread [ 11]
Executing : com.rationaleemotions.stackoverflow.qn44518748.SampleClassTwo.testMethodB() on thread [ 11]
Executing : com.rationaleemotions.stackoverflow.qn44518748.SampleClassOne.testMethodC() on thread [ 11]
Executing : com.rationaleemotions.stackoverflow.qn44518748.SampleClassTwo.testMethodC() on thread [ 11]

===============================================
1265_Suite
Total tests run: 6, Failures: 0, Skips: 0
===============================================

qn44518748.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="1265_Suite" parallel="false" verbose="2">
    <test name="92" parallel="classes" thread-count="1">
        <packages>
            <package name="com.rationaleemotions.stackoverflow.qn44518748"/>
        </packages>
    </test>
</suite>

SampleClassOne.java

package com.rationaleemotions.stackoverflow.qn44518748;

import org.testng.Reporter;
import org.testng.annotations.Test;

public class SampleClassOne {
    @Test
    public void testMethodA() {
        Reporter.log("Executing : " + output(), true);
    }

    @Test(dependsOnMethods = "testMethodA")
    public void testMethodB() {
        Reporter.log("Executing : " + output(), true);
    }

    @Test(dependsOnMethods = "testMethodB")
    public void testMethodC() {
        Reporter.log("Executing : " + output(), true);
    }

    private String output() {
        String clazzName = getClass().getCanonicalName();
        String method = Reporter.getCurrentTestResult().getMethod().getMethodName();
        return clazzName + "." + method + "() on thread [ " + Thread.currentThread().getId() + "]";
    }
}

SampleClassTwo.java

package com.rationaleemotions.stackoverflow.qn44518748;

import org.testng.Reporter;
import org.testng.annotations.Test;

public class SampleClassTwo {
    @Test
    public void testMethodA() {
        Reporter.log("Executing : " + output(), true);
    }

    @Test(dependsOnMethods = "testMethodA")
    public void testMethodB() {
        Reporter.log("Executing : " + output(), true);
    }

    @Test(dependsOnMethods = "testMethodB")
    public void testMethodC() {
        Reporter.log("Executing : " + output(), true);
    }

    private String output() {
        String clazzName = getClass().getCanonicalName();
        String method = Reporter.getCurrentTestResult().getMethod().getMethodName();
        return clazzName + "." + method + "() on thread [ " + Thread.currentThread().getId() + "]";
    }
}