给 JList 的消息 [英] Message to JList
本文介绍了给 JList 的消息的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
大家好，我有一个关于名为提交"的第二个按钮的问题，因为我无法将我输入的所有信息传输到框架中的空 JList 此处是我的代码，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消息区域的框架中，它需要是列表.谢谢
hey all goodevening i have a problem about my second button named "Submit" because i cant transfer all information i entered to my null JList in the frame here is my code so far my problem is if i clicked submit my all information will appear in my Message area in frame it needs to be list. thanks
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);
}
}
推荐答案
我修改了您的代码，以便您的列表由一个 Vector 支持，当您按下提交"按钮时，您会更新该矢量.
I modified your code so that your list is backed by a Vector which you update when you press the Submit button.
public class Frame 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 :");
Vector vector = new Vector();
JList list = new JList(vector);
JPanel panel = new JPanel();
JLabel brief;
public Frame()
{
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)
{
vector.add(t1.getText() + "-" + t2.getText() + "-" + t3.getText() + "-" + t4.getText());
list.setListData(vector);
list.revalidate();
list.repaint();
}
}
});
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 [])
{
Frame w = new Frame();
w.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
w.setSize(400,600);
w.setVisible(true);
}
}
这篇关于给 JList 的消息的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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