How Java + Selenium-- erupted menu click the menu

package rjcs;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
import java.util.Set;

import org.openqa.selenium.interactions.Actions;
import org.apache.commons.io.FileUtils;
import org.openqa.selenium.TakesScreenshot;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.openqa.selenium.interactions.Actions;
import org.openqa.selenium.By;
import org.openqa.selenium.Keys;
import org.openqa.selenium.WebElement;
import org.testng.annotations.Test;
import org.openqa.selenium.*;

import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

import org.openqa.selenium.OutputType;

import com.thoughtworks.selenium.SeleneseTestNgHelper;

public class ckqhh 
{
    public static void main(String[] args)
    
    {
         System.setProperty ( "webdriver.firefox.bin", "C: \\ Program Files (the x86) \\ \\ firefox.exe the Mozilla Firefox");     // set the installation path Firefox, preventing system can not find 
            
         FirefoxDriver Driver = new new FirefoxDriver ();         // initialize FireFox browser instance, and open the browser 
         
        the try 
        { 
             driver.manage () window () maximize ();..          // maximized window 
             
             the Thread.sleep ( 3000 );         
             
             driver.manage () .window () the maximize ();.          // maximize the window 
             
             Thread.sleep ( 3000 ); 


             driver.get ( "https://www.baidu.com" );  
              
             the Thread.sleep ( 1000 ); 
             
             the Actions Action = new new the Actions (Driver); 
             
             action.moveToElement (driver.findElementByLinkText ( . "Settings")) Perform ();      // Hover element disposed above 
             
             driver.findElementByClassName ( "setpref") the Click ();.       // open Search set 
             
             the Thread.sleep ( 8000 ); 
             
             

             List <WebElement> List = driver.findElements (By.xpath ( "SELECT // [@ ID = 'NR'] / * " )); 
             
             for (ELE WebElement: List) 
             { 
           
                 IF (ele.getAttribute ( "value") the equals ( "50."))
                 {
                     ele.click();
                     break;
                 }
             }

             
             Thread.sleep(5000);
             
        }catch (Exception e) 
        {
            e.printStackTrace();
        }finally 
        {
            driver.quit();
        
         }
   }
    

}