Gui JList ActionListener

Question

嘿所有goodevening我有一個關於我的第二個按鈕名為“提交”的問題，因為我無法將我輸入的所有信息傳輸到框架中的我的空JList這里是我的代碼到目前為止我的問題是如果我點擊提交我的所有信息將出現在我的幀中的消息區域需要列出。 謝謝

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class vin extends JFrame
{
        JLabel lab = new JLabel("Enter Your Name :");
        JLabel lab2 = new JLabel("Enter Your Birthday :");
        JLabel lab3 = new JLabel("Enter Your Age:");
        JLabel lab4 = new JLabel("Enter Your HomeTown:");
        JLabel lab5 = new JLabel("Choose Your Department:");
        JButton b1 = new JButton("Exit");
        JTextField t1 = new JTextField(15);
        JTextField t2 = new JTextField(15);
        JTextField t3 = new JTextField(15);
        JTextField t4 = new JTextField(15);
        JButton b2 = new JButton("Submit");
        JButton b3 = new JButton("Clear");
         JLabel lab6 = new JLabel("Message :");
        JList list = new JList();
        JPanel panel = new JPanel();
        JLabel brief;

    public vin()
    {

        setLocation(500,280);
        panel.setLayout(null);


        lab.setBounds(10,10,150,20);
        t1.setBounds(130,10,150,20);
        lab5.setBounds(10,40,150,20);
        lab2.setBounds(10,140,150,20);
        t2.setBounds(130,140,150,20);
        lab3.setBounds(10,170,150,20);
        t3.setBounds(110,170,150,20);
        lab4.setBounds(10,200,150,20);
        t4.setBounds(150,200,150,20);
        lab6.setBounds(10,240,150,20);
        list.setBounds(50,270,150,20);
        list.setSize(250,150);
        b1.setBounds(250,470,150,20);
        b2.setBounds(60,470,150,20);
        b3.setBounds(160,470,150,20);
        b1.setSize(60,30);
        b2.setSize(75,30);
        b3.setSize(65,30);


        panel.add(lab);
        panel.add(t1);
        panel.add(lab5);
        panel.add(lab2);
        panel.add(t2);
        panel.add(t3);
        panel.add(t4);
        panel.add(lab4);
        panel.add(lab3);
        panel.add(lab6);
        panel.add(b1);
        panel.add(b2);
        panel.add(b3);
        panel.add(list);

        brief = new JLabel("Goodmorning "+t1+" Today is "+t2+" its your birthday You are now"+t3+" of age You are From"+t4);
        getContentPane().add(panel);


        b1.addActionListener(new ActionListener()
        {
           public void actionPerformed(ActionEvent a)
           {
               Object source = a.getSource();

               if(source == b1)
               {
                   System.exit(0);
               }
           }
        });

        b2.addActionListener(new ActionListener()
        {

            public void actionPerformed(ActionEvent a)
            {
                Object source = a.getSource();

                if(source == b2)
                {
                   list = new JList();
                }  
            }
        });
        b3.addActionListener(new ActionListener()
        {
           public void actionPerformed(ActionEvent a)
           {
               Object source = a.getSource();

               if(source == b3)
               {
                   t1.setText("");
                   t2.setText("");
                   t3.setText("");
                   t4.setText("");
               }
           }
        });
    }       

    public static void main(String args [])
    {
        vin w = new vin();

        w.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        w.setSize(400,600);
        w.setVisible(true);
    }
}

Answer 1

好吧，據我所知，這將從Fields獲取信息，並將它們放入LIST，你在那里

b2.addActionListener（new ActionListener（）{

        public void actionPerformed(ActionEvent a)
        {
            DefaultListModel listModel = new DefaultListModel();
            listModel.addElement(t1.getText());
            listModel.addElement(t2.getText());
            listModel.addElement(t3.getText());
            listModel.addElement(t4.getText());
            list.setModel(listModel);


        }
    });

這對我來說很簡單，所以你可以看到我在做什么我把txtfield放到數組所以它的easyer芽這對你很有用:)

你可以用數組和for循環這樣做，這樣你每次都可以擺脫listmodel.add ....等，當你想要把以前用過的所有信息用作例如arraylist。我不確定你的期望您下次發布問題時運行的程序請指出確切的問題以及您希望程序如何詳細工作。還要發布相關代碼而不是全部。