Wait for page load in Selenium

Question

How do you make Selenium 2.0 wait for the page to load?

Answer 1

Imran's answer rehashed for Java 7:

    WebDriverWait wait = new WebDriverWait(driver, 30);

    wait.until(new ExpectedCondition() {
        public Boolean apply(WebDriver wdriver) {
            return ((JavascriptExecutor) driver).executeScript(
                "return document.readyState"
            ).equals("complete");
        }
    });