Gui JList ActionListener

嘿所有goodevening我有一个问题关于我的第二个按钮名为“提交”，因为我无法将我输入的所有信息传输到我的空JList框架这里是我的代码到目前为止我的问题是如果我点击提交我的所有信息将出现在我的帧中的消息区域需要列出。 谢谢

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，据我所知，这将从Fields获取信息并将它们放入LIST，你有那里

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); } }); 

这对我来说很简单所以你可以看到我在做什么我把txtfield放到数组所以它的easyer芽这对你很有用:)

你可以使用数组和for循环来做到这一点，这样你就可以每次都摆脱listmodel.add ….等，当你想要把以前使用过的所有信息用作例如arraylist。我不确定你的期望你的程序下次当你发布问题时运行请指出确切的问题，你如何期望程序的详细工作。也只是发布相关的代码而不是全部。