Selenium throws IndexOutOfBoundsException while opening new tab

Question

Selenium Java program throws IndexOutOfBoundsException exception when executed below code to open new tab in Chrome.

Java Code:

System.setProperty("webdriver.chrome.driver", "/Users/john/Desktop/chromedriver");
                    WebDriver driver = new ChromeDriver();
                    driver.manage().window().maximize();
                    String baseUrl = "http://google";
                    driver.get(baseUrl);
                    driver.findElement(By.cssSelector("body")).sendKeys(Keys.CONTROL + "t");

                    ArrayList<String> tabs = new ArrayList<String>(driver.getWindowHandles()); 
                    driver.switchTo().window(tabs.get(1)); // switches to  new tab
                    driver.get("https://www.facebook.com");

Error:

Starting ChromeDriver 2.29.461585 (0be2cd95f834e9ee7c46bcc7cf405b483f5ae83b) on port 48571
Only local connections are allowed.
May 12, 2017 12:54:14 AM org.openqa.selenium.remote.ProtocolHandshake createSession
INFO: Detected dialect: OSS
java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
    at java.util.ArrayList.rangeCheck(ArrayList.java:653)
    at java.util.ArrayList.get(ArrayList.java:429)
    at test.SeleniumTest.main(SeleniumTest.java:31)

Answer 1

In the line driver.switchTo().window(tabs.get(1)); you get that exception. It's happening because, you've no any other windows open other than the first one.

Answer 2

tabs的大小为 1。您尝试访问位置1 ，而最高可能是0 。