webdriver classname with space using java

For a less fragile test, another option is to use an XPATH which doesn't depend of the order of classes, like:

WebElement element = driver.findElement(By.xpath("//a[contains(@class, 'current') and contains(@class, 'time')]"));

Instead of class name you can use a css selector. You don't mention the tagname for the class 'current time'. I am assuming it to be input, so your css selector work be,

WebElement element = driver.findElement(By.cssSelector("input[class='current time']"));
element.click();

Edit#1 Based on html provided,

Looking at the html in your comment, it seems you have quite a few options to find the webElement. Here are your options,

WebElement element = driver.findElement(By.cssSelector("a[class='current time']"));
element.click();

or this should work too,

WebElement element = driver.findElement(By.cssSelector("a.current.time"));
element.click();

You can also use linkText since the element is link. From the html you provided, the link text is 'url'

WebElement element = driver.findElement(By.linkText("url"));
element.click();

You can also use By.partialLinkText("partial link text here");

You can also use xpath as:

WebElement element = driver.findElement(By.xpath("//a[@class='current time']"));
element.click();

OR,

WebElement element = driver.findElement(By.xpath("//a[text() = 'url']"));
element.click();