在另一种方法中使用一种方法

Question

所以这可能以前被问过，但我无法真正理解我在网上阅读的所有信息。

public static void balanceSheet(){
  //Put in the Company u want to get the data from
  Scanner scan= new Scanner(System.in);
  System.out.println("Enter your Symbol: ");
  String symbol= scan.nextLine();

  //Diffrent Websites to visit and get the Data
  String url = ("http://www.morningstar.com/stocks/XNAS/"+symbol+"/quote.html");
  driver.switchTo().frame(driver.findElement(By.xpath("//*[(@id = 'quote_quicktake')]//iframe")));
  String currPrice = driver.findElement(By.id("last-price-value")).getText();
  driver.switchTo().defaultContent();

  System.out.println("Current Share Pirce: "+currPrice+"$");
}

如何在 calCulator 方法中获取 String currPrice 的值，以便我可以用其他数字计算它？

public void calCulator() {
  Scanner calCu = new Scanner(System.in);
  System.out.println("Do you want to Calculate the Value?: ");
  String calculator = calCu.next();

  if(calculator.equals("Yes")) {
    System.out.println("the Calculation is: ");
  }

  else {
    System.out.println("ok");
  }
}

Answer 1

好吧，经过 15 个小时的纯看教程，我得到了我想要的答案，这真的很容易，只是我的头脑很慢，但我所做的是

public class Webscraper {

    String currentPrice; <<<<<< ADDED THAT STRING TO MY CLASS

    public void balanceSheet(){
      //Put in the Company u want to get the data from
      Scanner scan= new Scanner(System.in);
      System.out.println("Enter your Symbol: ");
      String symbol= scan.nextLine();

      //Diffrent Websites to visit and get the Data
      String url = ("http://www.morningstar.com/stocks/XNAS/"+symbol+"/quote.html");
      driver.switchTo().frame(driver.findElement(By.xpath("//*[(@id = 'quote_quicktake')]//iframe")));
      String currPrice = driver.findElement(By.id("last-price-value")).getText();
      driver.switchTo().defaultContent();

      System.out.println("Current Share Pirce: "+currPrice+"$");
      currentPirce = currPrice; <<<<<< ADDED THAT SO THAT THE CLASS STRING WOULD GET ITS VALUE
    }

    public void calCulator() {
      Scanner calCu = new Scanner(System.in);
      System.out.println("Do you want to Calculate the Value?: ");
      String calculator = calCu.next();

      if(calculator.equals("Yes")) {
        System.out.println("the Calculation is: "currentPrice); <<<<<< NOW I CAN GET THE VALUE
      }

      else {
        System.out.println("ok");
      }
    }

无论如何，谢谢你们的帮助，你们为我指明了正确的方向，希望这能帮助其他有同样问题的人

Answer 2

将currPrice作为类的成员变量，然后你可以在类的其他方法中使用它，如下所示。

public class Culator {
    // Take "currPrice" as member variable of class
    public static String currPrice = "";


    public static void balanceSheet(){

        //Put in the Company u want to get the data from
        Scanner scan= new Scanner(System.in);
        System.out.println("Enter your Symbol: ");
        String symbol= scan.nextLine();

        //Diffrent Websites to visit and get the Data
        String url = ("http://www.morningstar.com/stocks/XNAS/"+symbol+"/quote.html");

        driver.switchTo().frame(driver.findElement(By.xpath("//*[(@id = 'quote_quicktake')]//iframe")));
        currPrice = driver.findElement(By.id("last-price-value")).getText();

        driver.switchTo().defaultContent();

        System.out.println("Current Share Pirce: "+currPrice+"$");
    }


     public void calCulator()
     {
         Scanner calCu = new Scanner(System.in);
         System.out.println("Do you want to Calculate the Value?: ");
         String calculator = calCu.next();

         if(calculator.equals("Yes")){
             System.out.println("the Calculation is: ");
         } else {
             System.out.println("ok");
         }
         // Now You can use "currPrice" in this method
     }

}