的actionPerformed以及使

`的actionPerformed以及使

public void actionPerformed(ActionEvent e) 
    { 
     if (e.getSource() == saleButton) 
     { 
      processSale(Wine wi); 
      //System.out.println("fvghj"); 
     } 
     else if (e.getSource() == returnButton) 
     { 
       processReturn(Wine wi); 
      //System.out.println("fdgchj"); 
     } 

    } 


    //create a wine object to be returned - responsible for getting details from textfields when either sale or return is pressed 
    //this object is then passed to the relevant method in LWMGUI to process either sale or return 


public Wine getWine() 
    { 
     String wName = nameWineText.getText(); 

     String costBottles = costBottleText.getText(); 
     int cBottle = Integer.parseInt(costBottles); 
     //System.out.println(cBottle); 

     //get numBottle 
     String numBottles = numBottlesText.getText(); 
     int nBottle = Integer.parseInt(numBottles); 
     //System.out.println(nBottle); 

     Wine wi = new Wine(wName, cBottle, nBottle); 

     return wi; 

    } 


    private int processSale(Wine wi) 
    { 
     int totalSaleAmount = wi.getNumBottle() * (int) wi.getCostBottle(); 
     //System.out.println(totalAmount); 
     transactionText.setText("" + totalSaleAmount); 
     return totalSaleAmount; 
    } 

    private int processReturn(Wine wi) 
    { 
     int totalReturnAmount = wi.getNumBottle() * (int) wi.getCostBottle(); 
     //System.out.println(totalReturnAmount); 
     transactionText.setText("" + totalReturnAmount); 
     return totalReturnAmount; 
    }

`我在與一個actionPerformed方法的問題的對象。我已經從用戶輸入的文本字段獲得文本，以便爲我提供一個葡萄酒的成本，數量和名稱，以便進行銷售或退貨處理。我用這些信息創建了一個Wine對象（wi），並且希望將它傳遞給其他方法，無論是銷售還是返回。

我無法得到processSale（）或processReturn（）方法的工作，我真的很困惑！我認爲通過葡萄酒wi對象的方法將工作？這裏是相關的代碼;

來源

2011-11-02 Sarah Millard

processSale（Wine wi）;在這裏你正在創建一個變量。但是你應該傳遞一個對象，如processSale（new Wine（）） – blessenm