java - java中循环效率低下

Question

这是我的 csv 数据:

Name,Code,Price,Colour,Type,Stock
A,1001,35000,Red,Car Paint,54
B,1002,56000,Blue,House Paint,90

如您所见，我的编码效率很低。

这是因为 netbeans 中的所有文本字段不允许使用相同的变量名称，我必须为每个文本字段指定不同的变量名称(示例:code1、code2、code3、name1、name2、name3)

有人可以帮助我如何循环这些数据，以便他们执行四次并且我不必重复编码吗？如果字段为空则跳过该过程。

以下是我的编码:

try
    {
       for(int z=0; z<4;z++)
       {
        String code1;
        code1=this.text1.getText();
        System.out.println("this is the code: " + code1);
        String qty;
        int qty1;
        qty=this.quantity1.getText();
        qty1=Integer.parseInt(qty);
        System.out.println("quantity: "+qty1);

        String code2;
        code2=this.text2.getText();
        System.out.println("this is the code: " + code2);
        int qty2;
        qty=this.quantity2.getText();
        qty2=Integer.parseInt(qty);
        System.out.println("quantity: "+qty2);

        String code3;
        code3=this.text3.getText();
        System.out.println("this is the code: " + code3);
        int qty3;
        qty=this.quantity2.getText();
        qty3=Integer.parseInt(qty);
        System.out.println("quantity: "+qty3);

        String code4;
        code4=this.text4.getText();
        System.out.println("this is the code: " + code4);
        int qty4;
        qty=this.quantity2.getText();
        qty4=Integer.parseInt(qty);
        System.out.println("quantity: "+qty4);

        int sum=0;

        BufferedReader line = new BufferedReader(new FileReader(new File("C:\\Users\\Laura Sutardja\\Documents\\IB DP\\Computer Science HL\\cs\\product.txt")));
        String indata;

        ArrayList<String[]> dataArr = new ArrayList<>();
        String[] club = new String[6];
        String[] value;
        while ((indata = line.readLine()) != null) {
            value = indata.split(",");
            dataArr.add(value);
        }

        for (int i = 0; i < dataArr.size(); i++) {
            String[] nameData = dataArr.get(i);
            if (nameData[1].equals(code1)) {
                System.out.println("Found name.");
                name1.setText(""+ nameData[0]);
                int price;
                price=Integer.parseInt(nameData[2]);
                int totalprice=qty1*price;
                String total=Integer.toString(totalprice);
                price1.setText(total);
                sum=sum+totalprice;
                break;
            } 
        }

        for (int i = 0; i < dataArr.size(); i++) {
            String[] nameData = dataArr.get(i);
            if (nameData[1].equals(code2)) {
                System.out.println("Found name.");
                name2.setText(""+ nameData[0]);
                int price;
                price=Integer.parseInt(nameData[2]);
                int totalprice=qty2*price;
                String total=Integer.toString(totalprice);
                price2.setText(total);
                sum=sum+totalprice;
                break;
            } 
        }

        for (int i = 0; i < dataArr.size(); i++) {
            String[] nameData = dataArr.get(i);
            if (nameData[1].equals(code3)) {
                System.out.println("Found name.");
                name3.setText(""+ nameData[0]);
                int price;
                price=Integer.parseInt(nameData[2]);
                int totalprice=qty3*price;
                int totalprice3=totalprice;
                String total=Integer.toString(totalprice);
                price3.setText(total);
                sum=sum+totalprice;
                break;
            } 
        }

        for (int i = 0; i < dataArr.size(); i++) {
            String[] nameData = dataArr.get(i);
            if (nameData[1].equals(code4)) {
                System.out.println("Found name.");
                name4.setText(""+ nameData[0]);
                int price;
                price=Integer.parseInt(nameData[2]);
                int totalprice=qty4*price;
                int totalprice4=totalprice;
                String total=Integer.toString(totalprice);
                price4.setText(total);
                sum=sum+totalprice;
                break;
            } 
        }


       total1.setText("Rp. "+sum);
    }
    }

    catch ( IOException iox )
    {
        System.out.println("Error");
    }

Answer 1

为什么不使用像 http://commons.apache.org/proper/commons-csv/ 这样的库？