The Most Impactful Java Coding Interview Questions

66. Design a page object model framework.
public class BasePage {
    protected WebDriver driver;
    protected WebDriverWait wait;
    
    public BasePage(WebDriver driver) {
        this.driver = driver;
        this.wait = new WebDriverWait(driver, Duration.ofSeconds(10));
        PageFactory.initElements(driver, this);
    }
    
    protected void waitForElement(WebElement element) {
        wait.until(ExpectedConditions.visibilityOf(element));
    }
}
public class LoginPage extends BasePage {
    @FindBy(id = "username")
    private WebElement usernameField;
    
    public void login(String username, String password) {
        waitForElement(usernameField);
        usernameField.sendKeys(username);
        // Implementation
    }
}

@DataProvider(name = "loginData")
public Object[][] getLoginData() {
    return new Object[][] {
        {"user1", "pass1", true},
        {"user2", "pass2", false},
        {"", "", false}
    };
}
@Test(dataProvider = "loginData")
public void testLogin(String username, String password, boolean expected) {
    LoginPage loginPage = new LoginPage(driver);
    boolean result = loginPage.login(username, password);
    Assert.assertEquals(result, expected);
}

public class APITestFramework {
    private RequestSpecification requestSpec;
    
    @BeforeMethod
    public void setup() {
        requestSpec = new RequestSpecBuilder()
            .setBaseUri("https://api.example.com")
            .setContentType(ContentType.JSON)
            .build();
    }
    
    @Test
    public void testGetUser() {
        given()
            .spec(requestSpec)
        .when()
            .get("/users/1")
        .then()
            .statusCode(200)
            .body("name", equalTo("John Doe"))
            .body("email", containsString("@"));
    }
}

public class ParallelTestRunner {
    private ThreadPoolExecutor executor;
    private final List<TestResult> results = new CopyOnWriteArrayList<>();
    
    public void runTestsInParallel(List<TestCase> testCases) {
        executor = new ThreadPoolExecutor(
            Runtime.getRuntime().availableProcessors(),
            Runtime.getRuntime().availableProcessors() * 2,
            60L, TimeUnit.SECONDS,
            new LinkedBlockingQueue<>()
        );
        
        List<Future<TestResult>> futures = testCases.stream()
            .map(testCase -> executor.submit(() -> executeTest(testCase)))
            .collect(Collectors.toList());
            
        futures.forEach(future -> {
            try {
                results.add(future.get());
            } catch (Exception e) {
                // Handle test execution errors
            }
        });
    }
}

public class TestReporter {
    private static final Logger logger = LoggerFactory.getLogger(TestReporter.class);
    private final ExtentReports extent;
    private final ThreadLocal<ExtentTest> test = new ThreadLocal<>();
    
    public void startTest(String testName) {
        ExtentTest extentTest = extent.createTest(testName);
        test.set(extentTest);
        logger.info("Starting test: {}", testName);
    }
    
    public void logStep(String step, Status status) {
        test.get().log(status, step);
        logger.info("Step: {} - Status: {}", step, status);
    }
    
    public void attachScreenshot(String screenshotPath) {
        test.get().addScreenCaptureFromPath(screenshotPath);
    }
}