Question

我目前正在学习java编程课程，该项目涉及为餐馆制作计算器。我们必须使用绝对位置来定位所有GUI元素。我的项目很好（我想）。我只是在向GUI添加大量JTextfields时遇到困难，每次See Image我添加并放入X＆amp; Y坐标时，它不会添加第二个或第三个JTexfield，而是只是将第一个JTextfield移动到最后定义的位置。如果我正确解释这个问题，我不是100％确定，所以我附上了问题的截图。

非常感谢任何帮助。

import java.awt.Container;
import java.awt.Insets;
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.JTextField;

public class RestaurantCalculator {
     public static void addComponentsToPane(Container pane){
        pane.setLayout(null);

       JLabel Welcome = new JLabel("Restuarant");
              Welcome.setBounds(250, 5, 150, 100);
              Welcome.setFont(new Font("Arial Black", Font.BOLD, 20));


       JLabel Waiter = new JLabel("Waiter Information");
          Waiter.setBounds(100, 100, 200, 100);
          Waiter.setFont(new Font("Arial Black", Font.BOLD, 14));

   JLabel Tableno = new JLabel("Table number:");
          Tableno.setBounds(120, 130, 200, 100);
          Tableno.setFont(new Font("Arial Black", Font.BOLD, 12));


   JLabel WaiterName = new JLabel("Waiter Name:");
          WaiterName.setBounds(120, 160, 200, 100);
          WaiterName.setFont(new Font("Arial Black", Font.BOLD, 12));

    JLabel MenuItems = new JLabel("Menu Items");
           MenuItems.setBounds(100, 220, 150, 100);
           MenuItems.setFont(new Font("Arial Black", Font.BOLD, 14));

    JLabel Beverage = new JLabel("Beverage:");
           Beverage.setBounds(120, 250, 200, 100);
           Beverage.setFont(new Font("Arial Black", Font.BOLD, 12));

    JLabel Appetizer = new JLabel("Appetizer:");
           Appetizer.setBounds(120, 280, 200, 100);
           Appetizer.setFont(new Font("Arial Black", Font.BOLD, 12));

    JLabel MainCourse = new JLabel("Main Course:");
           MainCourse.setBounds(120, 310, 200, 100);
           MainCourse.setFont(new Font("Arial Black", Font.BOLD, 12));

    JLabel Dessert = new JLabel("Dessert:");
           Dessert.setBounds(120, 340, 200, 100);
           Dessert.setFont(new Font("Arial Black", Font.BOLD, 12));

    JLabel SubTotal = new JLabel("Sub Total:");
           SubTotal.setBounds(120, 440, 200, 100);
           SubTotal.setFont(new Font("Arial Black", Font.BOLD, 12));

    JLabel Tax = new JLabel("Tax:");
           Tax.setBounds(120, 470, 200, 100);
           Tax.setFont(new Font("Arial Black", Font.BOLD, 12));

    JLabel Total = new JLabel("Total:");
           Total.setBounds(120, 500, 200, 100);
           Total.setFont(new Font("Arial Black", Font.BOLD, 12));


    JTextField Table = new JTextField(10);
           Table.setBounds(290, 171, 150, 20);


   pane.add(Welcome);       
   pane.add(Waiter);
   pane.add(Tableno);
   pane.add(WaiterName);
   pane.add(MenuItems);
   pane.add(Beverage);
   pane.add(Appetizer);
   pane.add(MainCourse);
   pane.add(Dessert);
   pane.add(SubTotal);
   pane.add(Tax);
   pane.add(Total);
   pane.add(Table);

}

/**
 * Create the GUI and show it.  For thread safety,
 * this method should be invoked from the
 * event-dispatching thread.
 */
private static void createAndShowGUI() {
    //Create and set up the window.
    JFrame frame = new JFrame("Restaurant Bill Calculator");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    //Set up the content pane.
    addComponentsToPane(frame.getContentPane());

    //Size and display the window.
    Insets insets = frame.getInsets();
    frame.setSize(600 + insets.left + insets.right,
                  700 + insets.top + insets.bottom);
    frame.setVisible(true);
}

public static void main(String[] args) {
    //Schedule a job for the event-dispatching thread:
    //creating and showing this application's GUI.
    javax.swing.SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            createAndShowGUI();
        }
    });
}

}

添加具有绝对位置的多个JTextfields

0 个答案: