我不允许在程序中使用FileUtils，这样做时会显示错误。甚至没有建议显示要导入此预定义的类。我尝试搜索解决方案，但发现是导入该类。但就我而言，甚至没有建议显示要导入任何类。悬停在“
FileUtils”上显示了创建FileUtils类/接口的建议。下面是我的代码：

 package captureScreenshot;

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.FileUtils; //Getting Error at this line
import org.openqa.selenium.By;
import org.openqa.selenium.OutputType;
import org.openqa.selenium.TakesScreenshot;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.Test;

import com.google.common.io.Files;

public class FacebookScreenshot {

@Test
    public void captureScreenshot() throws IOException
{
    WebDriver driver = new FirefoxDriver();
    driver.manage().window().maximize();
    driver.get("https://www.facebook.com");
    driver.findElement(By.xpath("//input[@name='firstname']")).sendKeys("Anil Kumar");

    TakesScreenshot ts = (TakesScreenshot) driver;
    File source = ts.getScreenshotAs(OutputType.FILE);
    FileUtils.copyfile(source,new File("./Screenshots/facebook.png")); //Getting error at this line

    driver.quit();

    }

}