How to attach screenshot to Extent Report in java selenium

I am trying to attach screenshot for failed testcases from my path to Extent Report but somehow i am not able to attach into it.

I have tried my possible solution but it fails .
I have used extent report version 3

here is mine full code in separate extenreport class :

	package com.qa.ExtentReportListener;
	
	
	import java.io.IOException;
	import java.util.Calendar;
	import java.util.Date;
	import java.util.List;
	import java.util.Map;
	
	import org.testng.IReporter;
	import org.testng.IResultMap;
	import org.testng.ISuite;
	import org.testng.ISuiteResult;
	import org.testng.ITestContext;
	import org.testng.ITestResult;
	import org.testng.Reporter;
	import org.testng.xml.XmlSuite;
	
	import com.aventstack.extentreports.ExtentReports;
	import com.aventstack.extentreports.ExtentTest;
	import com.aventstack.extentreports.Status;
	import com.aventstack.extentreports.reporter.ExtentHtmlReporter;
	import com.aventstack.extentreports.reporter.configuration.ChartLocation;
	import com.aventstack.extentreports.reporter.configuration.Theme;
	import com.crm.qa.util.TestUtil;
	
	public class ExtentTestNGIReporterListener implements IReporter {
	    
	    private static final String OUTPUT_FOLDER = "test-output/";
	    private static final String FILE_NAME = "Extent.html";
	    
	    private ExtentReports extent;
	    private ExtentTest test;
	
	    public void generateReport(List<XmlSuite> xmlSuites, List<ISuite> suites, String outputDirectory) {
	        init();
	        
	        for (ISuite suite : suites) {
	            Map<String, ISuiteResult> result = suite.getResults();
	            
	            for (ISuiteResult r : result.values()) {
	                ITestContext context = r.getTestContext();
	                
	                buildTestNodes(context.getFailedTests(), Status.FAIL);
	                buildTestNodes(context.getSkippedTests(), Status.SKIP);
	                buildTestNodes(context.getPassedTests(), Status.PASS);
	                
	            }
	        }
	          
	        for (String s : Reporter.getOutput()) {
	            extent.setTestRunnerOutput(s);
	        }
	        
	        extent.flush();
	    }
	    
	    private void init() {
	        ExtentHtmlReporter htmlReporter = new ExtentHtmlReporter(OUTPUT_FOLDER + FILE_NAME);
	        htmlReporter.config().setDocumentTitle("ExtentReports - Created by TestNG Listener");
	        htmlReporter.config().setReportName("ExtentReports - Created by TestNG Listener");
	        htmlReporter.config().setTestViewChartLocation(ChartLocation.BOTTOM);
	        htmlReporter.config().setTheme(Theme.STANDARD);
	        
	        extent = new ExtentReports();
	        extent.attachReporter(htmlReporter);
	        extent.setReportUsesManualConfiguration(true);
	    }
	    
	    private void buildTestNodes(IResultMap tests, Status status) {
	        
	        
	        if (tests.size() > 0) {
	            for (ITestResult result : tests.getAllResults()) {
	                test = extent.createTest(result.getMethod().getMethodName());
	                
	                for (String group : result.getMethod().getGroups())
	                    test.assignCategory(group);
	
	                if (result.getThrowable() != null) {
	                    test.log(status, result.getThrowable());
	                }
	                else {
	                    test.log(status, "Test " + status.toString().toLowerCase() + "ed");
	                }
	                
	                test.getModel().setStartTime(getTime(result.getStartMillis()));
	                test.getModel().setEndTime(getTime(result.getEndMillis()));
	            }
	        }
	    }
	    
		public void down(ITestResult result) throws IOException{
			
			
			if(result.getStatus()==ITestResult.FAILURE){
				test.log(Status.FAIL, "TEST CASE FAILED IS "+result.getName()); //to add name in extent report
				test.log(Status.FAIL, "TEST CASE FAILED IS "+result.getThrowable()); //to add error/exception in extent report
				
				String screenshotPath = TestUtil.takeScreenshotAtEndOfTest();
				test.fail("Test Case failed check screenshot below"+test.addScreenCaptureFromPath(screenshotPath));
				//extentTest.log(Status.FAIL, MediaEntityBuilder.createScreenCaptureFromPath(screenshotPath).build()); //to add screenshot in extent report
				//extentTest.fail("details").addScreenCaptureFromPath(screenshotPath);
			}
			else if(result.getStatus()==ITestResult.SKIP){
				test.log(Status.SKIP, "Test Case SKIPPED IS " + result.getName());
			}
			else if(result.getStatus()==ITestResult.SUCCESS){
				test.log(Status.PASS, "Test Case PASSED IS " + result.getName());
	
			}
		extent.flush();
		}
	    
	    private Date getTime(long millis) {
	        Calendar calendar = Calendar.getInstance();
	        calendar.setTimeInMillis(millis);
	        return calendar.getTime();      
	    }
	}

here is my util class which contain screenshot method:

public static String takeScreenshotAtEndOfTest() throws IOException {
	String dateName = new SimpleDateFormat("yyyyMMddhhmmss").format(new Date());
    TakesScreenshot ts = (TakesScreenshot)driver;
    File source = ts.getScreenshotAs(OutputType.FILE);
	String destination = System.getProperty("user.dir") + "/screenshots/" +  dateName
			+ ".png";
	File finalDestination = new File(destination);
	FileHandler.copy(source, finalDestination);
	return destination;
}

Use this code in after method

if(result.getStatus()==result.FAILURE || result.getStatus()==result.SKIP) {
			String screenshotPath = util.captureScreenshot(driver, result.getName());
			result.setAttribute("screenshotPath", screenshotPath); //sets the value the variable/attribute screenshotPath as the path of the sceenshot
		}

and add below code in buildtestnodes

    if(result.getStatus()==result.FAILURE || result.getStatus()==result.SKIP) {
						String screenshotPath=(String) 
     result.getAttribute("screenshotPath");
						test.log(status, test.addScreenCapture(screenshotPath));
					} 

If you want take screen shots for failed test cases with test class name use below code segment.

Extent Report already provide the utility to take the screenshot .Please refer the below link:

https://extentreports.com/docs/versions/3/java/#automatic-screenshot-management

also find the snapshot and code for same:

 ExtentHtmlReporter htmlReporter = new ExtentHtmlReporter("extent.html");
htmlReporter.config().setAutoCreateRelativePathMedia(true);

test1.fail("details", MediaEntityBuilder.createScreenCaptureFromPath("1.png").build());
test2.fail("details", MediaEntityBuilder.createScreenCaptureFromPath("2.png").build());

how to take Screenshot using extent report

Try using this :

logger.log(Status.FAIL, logger.addScreenCaptureFromPath("YOUR PATH"));

UPDATE :
If this doesn't work, just cast the inner logger with markup.
import com.aventstack.extentreports.markuputils.Markup;

	package com.helper;

	import org.testng.annotations.Test;

	import com.aventstack.extentreports.AnalysisStrategy;
	import com.aventstack.extentreports.ExtentReports;
	import com.aventstack.extentreports.ExtentTest;
	import com.aventstack.extentreports.MediaEntityBuilder;
	import com.aventstack.extentreports.Status;

	import com.aventstack.extentreports.reporter.ExtentSparkReporter;

	import java.io.File;
	import java.io.FileInputStream;
	import java.io.FileNotFoundException;
	import java.io.IOException;
	import java.text.DateFormat;
	import java.text.SimpleDateFormat;
	import java.util.Calendar;
	import java.util.Date;

	import org.apache.commons.codec.binary.Base64;
	import org.apache.commons.io.FileUtils;
	import org.openqa.selenium.By;
	import org.openqa.selenium.OutputType;
	import org.openqa.selenium.TakesScreenshot;
	import org.openqa.selenium.WebDriver;
	import org.openqa.selenium.chrome.ChromeDriver;
	import org.openqa.selenium.edge.EdgeDriver;
	import org.openqa.selenium.firefox.FirefoxDriver;
	import org.openqa.selenium.ie.InternetExplorerDriver;
	import org.openqa.selenium.opera.OperaDriver;
	import org.testng.IResultMap;
	import org.testng.ITest;
	import org.testng.ITestContext;
	import org.testng.ITestResult;
	import org.testng.Reporter;
	import org.testng.annotations.AfterMethod;
	import org.testng.annotations.BeforeMethod;
	import org.testng.annotations.Listeners;
	import org.testng.annotations.Test;







	public class TestingEdgeDriver {
		ExtentReports extent;
		ExtentTest test;
		WebDriver driver;
		ExtentTest Parent;
		ExtentTest child1,child;
		
		@BeforeMethod
		public void setup(){
			
			DateFormat dateFormat = new SimpleDateFormat("yyyy.MM.dd HH-mm-ss"); 
			String destDir = dateFormat.format(new Date());
			ExtentSparkReporter esp=new ExtentSparkReporter(System.getProperty("user.dir")+"/ExtentReport/ExtentReports_"+destDir+"/SwarupExtentReport.html");
			extent=new ExtentReports();
			extent.attachReporter(esp);
			extent.setAnalysisStrategy(AnalysisStrategy.SUITE);
		}
		
		@Test (testName="Chrome browser Testing")public void chromeBrowser() throws IOException{
			/*extent.attachReporter(spark);
			extent.createTest("chromeBrowser").log(Status.PASS	, "This is logging event for the setup and it is passed");
			extent.flush();*/
			Parent=extent.createTest("CMO");
			child1=Parent.createNode("Test1");
			child=child1.createNode("Chrome browser Testing");
			
			System.out.println("The tread value for Chrome browser is "+ Thread.currentThread().getId());
			System.setProperty("webdriver.chrome.driver","E:\\chromedriver_win32 (2)\\chromedriver.exe");
			driver=new ChromeDriver();
			child.log(Status.PASS, "Chrome browser has opened",MediaEntityBuilder.createScreenCaptureFromPath(capture(driver)).build());
			driver.get("https://www.icicibank.com");
			
			child.log(Status.PASS,"Expected was its should open the bank website",MediaEntityBuilder.createScreenCaptureFromPath(capture(driver)).build());
			
			child.log(Status.PASS, "Need to open the URL "+" http://www.icicibank.com");
			driver.manage().window().maximize();
			child.log(Status.PASS, "Test Case is passed",MediaEntityBuilder.createScreenCaptureFromPath(capture(driver)).build());
			
			
			
		}
		
		@AfterMethod
		public void getResult(ITestResult result){
			if(result.getStatus()==ITestResult.SUCCESS){
				child.log(Status.PASS, "Test case is passed "+result.getStatus()+" "+result.getTestClass()+"  "+result.getName());
				child.log(Status.PASS, "Test case is passed "+result.getTestName());
				
			}
			if(result.getStatus()==ITestResult.FAILURE){
				child.log(Status.FAIL, "Test case is failed at below location "+result.getThrowable());
			}
			extent.flush();
		}
		
		
		/*@Test public void operaTesting(){
			System.out.println("The tread value for Opera browser is "+ Thread.currentThread().getId());
			System.setProperty("webdriver.opera.driver","E:\\operadriver_win32\\operadriver_win32\\operadriver.exe");
			Reporter.log("opera driver has been set",true);
			driver=new OperaDriver();
			driver.manage().window().maximize();
			driver.get("https://www.irctc.co.in");
		}
		@Test public void FirefoxTesting(){
			System.out.println("The tread value for Firefox browser is "+ Thread.currentThread().getId());
			System.setProperty("webdriver.gecko.driver","E:\\gecodriver\\geckodriver-v0.29.0-win32\\geckodriver.exe");
			Reporter.log("Gecko Driver has been set",true);
			driver=new FirefoxDriver();
			driver.manage().window().maximize();
			Reporter.log("firefox driver has been initialsed",true);
			driver.get("https://www.primevideo.com/");
		}
		@Test public void InternetExplorerTesting(){
			System.out.println("The tread value for IE browser is "+ Thread.currentThread().getId());
			System.setProperty("webdriver.ie.driver","E:\\IEDriverServer_Win32_3.4.0\\IEDriverServer.exe");
			Reporter.log("IE driver has been set",true);
			driver=new InternetExplorerDriver();
			driver.manage().window().maximize();
			driver.get("https://www.hotstar.com/in");
		}*/
		
		public static String captureBase64(WebDriver driver) throws IOException {
			String encodedBase64 = null;
			FileInputStream fileInputStream = null;
			File scrFile = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
			File Dest = new File("src/../BStackImages/" + System.currentTimeMillis()
			+ ".png");
			String errflpath = Dest.getAbsolutePath();
			FileUtils.copyFile(scrFile, Dest);
			 
			try {
				
				fileInputStream =new FileInputStream(Dest);
				byte[] bytes =new byte[(int)Dest.length()];
				fileInputStream.read(bytes);
				encodedBase64 = new String(Base64.encodeBase64(bytes));

			}catch (FileNotFoundException e){
				e.printStackTrace();
			}
			return "data:image/png;base64,"+encodedBase64;
			
			
			}
		
		public static String capture(WebDriver driver) throws IOException {
			
			File scrFile = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
			File Dest = new File("src/../BStackImages/" + System.currentTimeMillis()
			+ ".png");
			String errflpath = Dest.getAbsolutePath();
			FileUtils.copyFile(scrFile, Dest);
			return errflpath;
			}
	}

Use this following example is in Java

   WebDriver driver = new FirefoxDriver();
   
   driver.get("http://www.google.com/");
   
        // Store the screenshot in current project dir.
		String screenShot = System.getProperty("user.dir")+"\\Artifacts\\FileName.png";
		
        // Call Webdriver to click the screenshot.
		File scrFile = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
		
        // Save the screenshot.
		FileUtils.copyFile(scrFile, new File(screenShot));