setProperty, as the name says has two attributes which are – “System.setProperty(“propertyName”, “value”)”. It implies that it sets the system property ‘propertyName' to have the value 'value'.
While testing with Selenium, you will make use of the setProperty method because the browser doesn’t have a built-in server to run the automation code. In this case, you will need a Chrome/IE/Gecko driver server for communicating your Selenium code to the browser.
In simple words, to set the path of the driver for the respective browser you will need the system.setProperty.
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