driver.wait() throws IllegalMonitorStateException

Question

All the variations of wait(...) are throwing the below exception from the following code. What am I doing wrong?

java.lang.IllegalMonitorStateException
    at java.lang.Object.wait(Native Method)
    at java.lang.Object.wait(Object.java:485)
    at LoginPage.main(LoginPage.java:29)

try
        {
            driver.get("http://domain:port/coco/webapp/login/login.faces");

            driver.findElement(By.id("clientCode")).sendKeys("coco");
            driver.findElement(By.id("systemCode")).sendKeys("consumer");
            driver.findElement(By.id("userId")).sendKeys("ffadmin");
            driver.findElement(By.id("password")).sendKeys("password");

            driver.findElement(By.className("af_commandButton")).click();
            driver.wait();
            Assert.assertTrue(driver.getPageSource().contains("Administration"));

        }
        catch (Exception e)
        {
            e.printStackTrace();
        }

Answer 1

I hope this helps you

driver.manage().timeouts().implicitlyWait(long time, java.util.concurrent.TimeUnit unit); 

OR

WebDriverWait wait = new WebDriverWait(driver, long timeOutInSeconds);

WebElement element = wait.until(presenceOfElementLocated(org.openqa.selenium.By locator));

Please note that I have not executed this code as I don't have webdriver but I wrote this after referring to javadocs.

Please refer javadocs for more details on this.

Answer 2

You can only wait on an object if you've acquired the lock for it using synchronized.

I don't know whether you're meant to use wait using WebDriver - if you are, you'd need something like:

synchronized (driver)
{
    driver.wait();
}

However, if you're waiting for something to occur, it's more likely that there's an alternative method you're meant to be using. Perhaps WebDriverWait?

Answer 3

driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS); is the best solution. Else, you have surround the driver.wait by synchronize block