how to select specific date from date picker in selenium code example

Example 1: how to pick date from datepicker in selenium

((JavascriptExecutor)driver).executeScript("document.getElementById('fromDate').setAttribute('value','10 Jan 2013')")

Example 2: how to pick date from datepicker in selenium

((JavascriptExecutor)driver).executeScript ("document.getElementById('fromDate').removeAttribute('readonly',0);"); // Enables the from date box

WebElement fromDateBox= driver.findElement(By.id("fromDate"));
fromDateBox.clear();
fromDateBox.sendKeys("8-Dec-2014"); //Enter date in required format