I am new to Selenium and i am stuck in one implementation My requirements are

1. Go to Settings page
2. Look for the dropdown
3. Fetch all values from dropdown
4. Look for a certain text in dropdown
5. If the text is not selected,Select the particular text in dropdown

My code is as follows

void setru()     {         driver.switchTo().frame("contentFrame");         Select rudropdown=new Select(driver.findElement(By.id("DefaultOrganisationDropDown")));         List<WebElement> drop=rudropdown.getOptions();         int e=drop.size();         for(int i=0;i<e;i++)         {             String temp=drop.get(i).getText();             String actual_RU="000139, NEXTRAN CORPORATION - JACKSONVILLE";             boolean flag=false;             if(temp.contains("000139"))             {                 flag=true;                 rudropdown.selectByValue("actual_RU");              }          } 

But this is giving me error message. org.openqa.selenium.NoSuchElementException: Cannot locate option with value: actual_RU