How can I use a quote " or ' character within a string?

Question

am working on selenium webdriver using JAVA !

am trying to pass a string dynamically using the variable exp

String exp=",,,4'-TETRA; P-CHLORIDE";

d.findElement(By.xpath("a[contains(text(),\""+exp+"\")]//ancestor::table//parent::div")).sendKeys(Keys.ARROW_DOWN);

but its giving me an error :

Unable to locate element: {"method":"xpath","selector":

"a[contains(text(),\",,,4'-TETRA; P-CHLORIDE\")]//ancestor::table//parent::div"

}

Answer 1

Use '"+exp+"' instead of \\""+exp+"\\" :

  d.findElement(By.xpath("a[contains(text(),'"+exp+"')]//ancestor::table//parent::div")).sendKeys(Keys.ARROW_DOWN);

Update

d.findElement(By.xpath('a[contains(text(),"'+exp+'")]//ancestor::table//parent::div')).sendKeys(Keys.ARROW_DOWN);