Check image is present in html with selenium webdriver

If we want to validate that image is properly loading in webpage , we can use the following code –

package com.webdriver_13;

import org.openqa.selenium.By;
import org.openqa.selenium.JavascriptExecutor;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.firefox.FirefoxDriver;

public class MyVerification_05 {

	public WebDriver driver;
    private String baseUrl;
    
	public static void main(String[] args) {
		MyVerification_05 mv =new MyVerification_05();
		mv.launch_test();
	}
	public void launch_test()  
	{
		driver = new FirefoxDriver();
		baseUrl = "http://demo.tanmaysarkar.com/sample_04.html";
		driver.get(baseUrl);
		
		WebElement image1 = driver.findElement(By.xpath("//img[contains(@alt,'image one')]"));
		
		Boolean imageLoaded1 = (Boolean) ((JavascriptExecutor)driver).executeScript("return arguments[0].complete && typeof arguments[0].naturalWidth != \"undefined\" && arguments[0].naturalWidth > 0", image1);
		if (!imageLoaded1)
	    {
	         System.out.println("1. Image is not present");
	    }
		else
		{
			System.out.println("1. Got it");
		}
		
		WebElement image2 = driver.findElement(By.xpath("//img[contains(@alt,'image two')]"));
		
		Boolean imageLoaded2 = (Boolean) ((JavascriptExecutor)driver).executeScript("return arguments[0].complete && typeof arguments[0].naturalWidth != \"undefined\" && arguments[0].naturalWidth > 0", image2);
		if (!imageLoaded2)
	    {
	         System.out.println("2. Image is not present");
	    }
		else
		{
			System.out.println("2. Got it");
		}
		
		driver.close();
	}
}

as in the demo page http://demo.tanmaysarkar.com/sample_04.html
only first image is present and second one is missing or the link is broken , so the output is –

1. Got it
2. Found broken image