Question

我正在创建一个带有gui的计算器，该计算器返回每周工资，并以提示率包含在练习中并遇到问题。

        public class NetPay {

        public static double netPayRate(double hourlyPayRate, double tipRate){
        double netPayRate=(hourlyPayRate*tipRate)+hourlyPayRate;

        return netPayRate*40;
    }
    public static void main(String[] args) {
        // TODO Auto-generated method stub

    }

}

我想知道如何在我制作的gui课程中调用hourlyPayRate和tipRate？

谢谢！

gui：

public class DiffGui {

NetPay netPayRate= new NetPay();

public static void main(String[] args) {
    // TODO Auto-generated method stub
    new DiffGui();
}


public DiffGui(){
EventQueue.invokeLater(new Runnable(){

    @Override
    public void run() {
        // TODO Auto-generated method stub
        try{
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

        }catch(ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex){
            ex.printStackTrace();

        }
        //the frame everything is built on
        JFrame mainFrame= new JFrame("Testing");
            mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            mainFrame.add(new Test());
            mainFrame.pack();
            mainFrame.setLocationRelativeTo(null);
            mainFrame.setVisible(true);

        //code for the textboxes+button & panel below
            JPanel southPanel= new JPanel();
            JTextField salary= new JTextField();
            JTextField tips= new JTextField();
                    southPanel.add(salary);
                    southPanel.add(tips);
            JButton calculateButton= new JButton("Calculate!");
                    southPanel.add(calculateButton);
                    mainFrame.getContentPane().add(southPanel , BorderLayout.SOUTH);
                    calculateButton.addActionListener(new ActionListener(){
// calculate button action listener
                        @Override
                        public void actionPerformed(ActionEvent e) {




                            // TODO Auto-generated method stub

                        }

                    });

        }


    });
}
public class Test extends JPanel{
public Test(){
    setLayout(new BorderLayout());
    BackgroundPane backPane= new BackgroundPane();
    backPane.setLayout(new GridBagLayout());
    add(backPane);


     try {
         BufferedImage tryCatch = ImageIO.read(new File("pictures/background.gif"));
         backPane.setbackgroundImage(tryCatch);
     } catch (IOException ex) {
         ex.printStackTrace();


     }
     JLabel viewing= new JLabel("Pay Calculator");
     viewing.setOpaque(true);
     viewing.setForeground(Color.BLACK);
     viewing.setBackground(Color.YELLOW);
     viewing.setBorder(new EmptyBorder(25,25,25,25));
     backPane.add(viewing);
}
public class BackgroundPane extends JPanel{
    private BufferedImage image;
        @Override
            public Dimension getPreferredSize(){
                BufferedImage image = getBackgroundImage();
                Dimension size= super.getPreferredSize();
                    if(image != null){
                        size.width = Math.max(size.width, image.getWidth());
                        size.height = Math.max(size.height, image.getHeight());
                    }
                    return size;

    }
        public BufferedImage getBackgroundImage(){
            return image;
        }
        public void setbackgroundImage(BufferedImage x){
            if( image!=x){
                BufferedImage prevous= image;
                image=x;
                firePropertyChange("background" , prevous , image);
                revalidate();
                repaint();

            }
        }
        @Override
        protected void paintComponent(Graphics graphs){
            super.paintComponent(graphs);
            BufferedImage backpane= getBackgroundImage();
            if(backpane != null){
                int x = (getWidth()-backpane.getWidth())/2;
                int y = (getHeight()-backpane.getHeight())/2;
                graphs.drawImage(backpane,x,y,this);

            }


        }
}

}
}

计算按钮动作监听器，特别是变量工资和提示是我想在我的gui中插入值然后让付费计算器使用这些值来查找每周工资

Answer 1

我假设你想要netpay，因为这似乎是代码和计算按钮中最符合逻辑的。如果是这样，您只需要从NetPay类调用该方法，传递参数并将返回值放入GUI中的正确位置。因此，假设工资是每小时工资，并且你将薪水和技巧提高到双打，那么代码就像是：

NetPay netPayRate= new NetPay();

double netpay= netPayRate(salary, tips);

然后将netpay cast作为字符串放入gui上的正确对象。假设薪水是hallyrate的变量，我会考虑重新命名，因为薪水往往表示年度金额。同样，提示会建议价值而不是价格，因此值得重命名。

Answer 2

如果我正确理解了您的问题，您希望将值从DiffGUI传递到PayNet。你可以点击按钮

来写这个

calculateButton.addActionListener(new ActionListener() {
    // calculate button action listener
        @Override
        public void actionPerformed(ActionEvent e) {
            // TODO Auto-generated method stub
               double salaryValue = Double.valueOf(salary.getText()); // get value from JTextField
               double tipsValue = Double.valueOf(tips.getText());
               NetPay net = new NetPay();
               double netpayValue = net.netPayRate(salaryValue, tipsValue);

            }
        });

如何从另一个班级拨打双人电话？

2 个答案: