How to refresh a page without using context click?

1.Using sendKeys.Keys method

driver.get("https://accounts.google.com/SignUp");

driver.findElement(By.id("firstname-placeholder")).sendKeys(Keys.F5);

2.Using navigate.refresh() method

driver.get("http://ruchi-myseleniumblog.blogspot.in/2013/12/100-selenium-interview-questions.html");

driver.navigate().refresh();

3.Using navigate.to() method

driver.get("http://ruchi-myseleniumblog.blogspot.in/2014/01/selenium-hybrid-framework-using.html");

driver.navigate().to(driver.getCurrentUrl());

4.Using get() method

driver.get("http://ruchi-myseleniumblog.blogspot.in/2013/12/basic-core-java-interview-questions.html");

driver.get(driver.getCurrentUrl());

5.Using sendKeys() method

driver.get("https://accounts.google.com/SignUp");

driver.findElement(By.id("firstname-placeholder")).sendKeys("\uE035");