How do I close all pop up window except the main window(we have more that one pop up)

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Java

selenium

when i am trying to Automate one page like:-


WebDriver driver = new FirefoxDriver();
//Puts an Implicit wait, Will wait for 10 seconds before throwing exception
driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
String title;
//Launch opposite
driver.navigate().to("http://naukri.com");

this is opening 3 other pop up i want to close all other pop up other that main window

What I have tried:

i tried to close the other pop up window like:-

driver.findElement(By.xpath("html/body/dl[1]/dd/a")).click();
driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
driver.switchTo().window("PopUpWindow0");
driver.manage().window().maximize();
driver.close();

but i dont know how to close all the pop up at once