Appium Android Multiple Test case, How does it work?

Issues/Bugs
1

I am trying to Appium to automate a test case on my app.
I managed to run a simple script, but I do NOT understand the logic of of the multiple testcases running process like android life-cycle.
What is the cycle for a testcase?
Because When I run the code below it does not run in order as of, firstTest, secondTest, thirdTest…
How do we tell the testCase what to run first and in what order ? thanks

public class LoginTest {

AndroidDriver driver;

@BeforeClass
public void setUp() throws MalformedURLException{
    DesiredCapabilities capabilities = new DesiredCapabilities();
    capabilities.setCapability("device", "Android");
    capabilities.setCapability(CapabilityType.BROWSER_NAME, ""); //Name of mobile web browser to automate. Should be an empty string if automating an app instead.
    capabilities.setCapability(CapabilityType.VERSION, "5.0.2");
    capabilities.setCapability(CapabilityType.PLATFORM, "Android");
    capabilities.setCapability("app-package", "com.myapp"); //Replace with your app's package
    capabilities.setCapability("app-activity", ".myapp"); //Replace with app's Activity
    driver = new RemoteWebDriver(new URL("http://127.0.0.1:4723/wd/hub"), capabilities);
}

@Test
public void firstTest() throws InterruptedException
{

	List<WebElement> textFieldsList = driver.findElements(By.className("android.widget.EditText")); 
	int size = textFieldsList.size();
	textFieldsList.get(0).sendKeys("[email protected]");
	textFieldsList.get(1).sendKeys("12345");
	Thread.sleep(1000);
	

	WebElement btnLogin=driver.findElement(By.name("Login"));
	String login = btnLogin.getText();
	Assert.assertTrue(login.contains("Login"));
	System.out.println(login);
	btnLogin.click();
	Thread.sleep(1000);
	
}

@Test
public void secondTest() throws InterruptedException {
	WebElement btnHome=driver.findElement(By.name("Home"));
	String login_1 = btnHome.getText();
	Assert.assertTrue(login_1.contains("Home"));
	System.out.println(login_1);
	btnHome.click();
	Thread.sleep(1000);
}
@Test
public void thirdTest() throws InterruptedException {
	WebElement btnSecond=driver.findElement(By.name("Second"));
	String login_2 = btnSecond.getText();
	Assert.assertTrue(login_2.contains("Second"));
	System.out.println(login_2);
	btnSecond.click();
	Thread.sleep(1000);
}

Thank you