包含一个文本框,两个按钮和一个列表框,2个按钮的功能是能够实现对JList的控制,添加(将文本框内字符作为列表框中一项),删除(鼠标单击另一个按钮时,将列表框中被选中的选项清除出列表框),粗略写的如下:import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Event.ActionEvent;
import java.awt.Event.ActionListener;public class add_clean
{
public static void main(String args[])
{
JFrame app = new JFrame("删除添加实例");
app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
app.setSize(620,300);
Container c = app.getContentPane();
c.setLayout(new FlowLayout());
JTextField tField = new JTextField("sun", 8);
tField.setEditable(false);
c.add(tField);
String value = tField.getText();
DefaultListModel listModel = new DefaultListModel();
JList jlist = new JList(listModel);
c.add(jlist);
JButton J_button1 = new JButton("添加");
JButton J_button2 = new JButton("删除");
J_button[0].addActionListener(new ActionListener()
{
private void actionPerformed(ActionEvent e)
{
JButton J_button1 = (JButton)e.getSource();
listModel.insertElementAt(value,1);
}
}
);
c.add(J_button1);
J_button[1].addAcctionListener(new ActionListener()
{
private void actionPerformed(ActionEvent e)
{
JButton J_button2 = (JButton)e.getSource();
int index = jlist.getSelectedIndex();
listModel.removeElementAt(index);
}
}
);
c.add(J_button2);
app.setVisible(true);
}
}编译没有通过的,哪位仁兄出手帮忙编译修改一下,因为还有几个类似的题要做,谢谢~
import javax.swing.JList;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Event.ActionEvent;
import java.awt.Event.ActionListener;public class add_clean
{
public static void main(String args[])
{
JFrame app = new JFrame("删除添加实例");
app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
app.setSize(620,300);
Container c = app.getContentPane();
c.setLayout(new FlowLayout());
JTextField tField = new JTextField("sun", 8);
tField.setEditable(false);
c.add(tField);
String value = tField.getText();
DefaultListModel listModel = new DefaultListModel();
JList jlist = new JList(listModel);
c.add(jlist);
JButton J_button1 = new JButton("添加");
JButton J_button2 = new JButton("删除");
J_button[0].addActionListener(new ActionListener()
{
private void actionPerformed(ActionEvent e)
{
JButton J_button1 = (JButton)e.getSource();
listModel.insertElementAt(value,1);
}
}
);
c.add(J_button1);
J_button[1].addAcctionListener(new ActionListener()
{
private void actionPerformed(ActionEvent e)
{
JButton J_button2 = (JButton)e.getSource();
int index = jlist.getSelectedIndex();
listModel.removeElementAt(index);
}
}
);
c.add(J_button2);
app.setVisible(true);
}
}编译没有通过的,哪位仁兄出手帮忙编译修改一下,因为还有几个类似的题要做,谢谢~
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;public class add_clean {
public static void main(String args[]) {
JFrame app = new JFrame("删除添加实例");
app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
app.setSize(620, 300);
Container c = app.getContentPane();
c.setLayout(new FlowLayout()); final JTextField tField = new JTextField("sun", 8);
c.add(tField); final DefaultListModel listModel = new DefaultListModel();
final JList jlist = new JList(listModel);
jlist.setSize(100, 100);
c.add(jlist); JButton J_button1 = new JButton("添加");
JButton J_button2 = new JButton("删除");
c.add(J_button1);
c.add(J_button2);
J_button1.addActionListener(new ActionListener() {
final String value = tField.getText();
public void actionPerformed(ActionEvent e) {
listModel.insertElementAt(value, 0);
}
}); J_button2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int index = jlist.getSelectedIndex();
listModel.removeElementAt(index);
}
}); app.setVisible(true);
}
}
import javax.swing.JFrame;
import javax.swing.*;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;public class TT {
public TT() {
JFrame app = new JFrame("删除添加实例");
app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
app.setSize(620, 300);
Container c = app.getContentPane();
c.setLayout(new FlowLayout()); final JTextField tField = new JTextField("sun", 8);
c.add(tField); final DefaultListModel listModel = new DefaultListModel();
final JList jlist = new JList(listModel);
jlist.setSize(100, 100);
c.add(jlist); JButton J_button1 = new JButton("添加");
JButton J_button2 = new JButton("删除");
c.add(J_button1);
c.add(J_button2); J_button1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) {
listModel.insertElementAt(tField.getText(), 0);
}
}); J_button2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
int index = jlist.getSelectedIndex();
if (index < 0) {
JOptionPane.showMessageDialog(null, "no selected~");
} else
listModel.removeElementAt(index);
}
});
app.setVisible(true);
} public static void main(String args[]) {
new TT();
}
}