import java.awt.*;
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import javax.swing.event.*;public class ButtonDemo extends Applet implements ActionListener{
JPanel p1,p2;
String str;
JTextField txtField;
JList lst;
public void init(){
JLabel lab1=new JLabel("输入您的内容:");
JLabel lab2=new JLabel("您所填入的内容:");
JButton btn1=new JButton("提交到列表");
JButton btn2=new JButton("重置");
txtField=new JTextField(10);
//定义数组
; String[] Array={"Hello world"}; //设置列表框
DefaultListModel listData=new DefaultListModel();
listData.addElement(Array);
lst=new JList(Array);
lst.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
lst.setSelectedIndex(0);
p1=new JPanel(new FlowLayout());
p2=new JPanel(new BorderLayout());
//添加文本与按钮
p1.add(lab1);
p1.add(txtField);
p1.add(btn1);
btn1.addActionListener(this);
p1.add(btn2);
// btn2.addActionListener(this);
// p2.add(lab2);
p2.add(lst);
setLayout(new BorderLayout());
add(p1,BorderLayout.NORTH);
add(p2,BorderLayout.CENTER);
p2.add(new JScrollPane(lst));
}
public void actionPerformed(ActionEvent ae){
try{
if(txtField.getText().equals("")){
JOptionPane.showMessageDialog(this,"输入的值不能为空值","错误",JOptionPane.ERROR_MESSAGE);
txtField.setText("");}
else{
str=String.valueOf(txtField.getText());
}
// lstArray[0].getText().equals(str);}
} catch (Exception e)
{
txtField.getText().equals("错误");
}
}
}
程序的目的是点击文本框JTextField,能将文本框的内容添加到JList中去,请指教!初学者
import java.awt.event.*;
import java.applet.*;
import javax.swing.*;
import javax.swing.event.*;public class ButtonDemo extends Applet implements ActionListener{
JPanel p1,p2;
String str;
JTextField txtField;
JList lst;
public void init(){
JLabel lab1=new JLabel("输入您的内容:");
JLabel lab2=new JLabel("您所填入的内容:");
JButton btn1=new JButton("提交到列表");
JButton btn2=new JButton("重置");
txtField=new JTextField(10);
//定义数组
; String[] Array={"Hello world"}; //设置列表框
DefaultListModel listData=new DefaultListModel();
listData.addElement(Array);
lst=new JList(Array);
lst.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
lst.setSelectedIndex(0);
p1=new JPanel(new FlowLayout());
p2=new JPanel(new BorderLayout());
//添加文本与按钮
p1.add(lab1);
p1.add(txtField);
p1.add(btn1);
btn1.addActionListener(this);
p1.add(btn2);
// btn2.addActionListener(this);
// p2.add(lab2);
p2.add(lst);
setLayout(new BorderLayout());
add(p1,BorderLayout.NORTH);
add(p2,BorderLayout.CENTER);
p2.add(new JScrollPane(lst));
}
public void actionPerformed(ActionEvent ae){
try{
if(txtField.getText().equals("")){
JOptionPane.showMessageDialog(this,"输入的值不能为空值","错误",JOptionPane.ERROR_MESSAGE);
txtField.setText("");}
else{
str=String.valueOf(txtField.getText());
}
// lstArray[0].getText().equals(str);}
} catch (Exception e)
{
txtField.getText().equals("错误");
}
}
}
程序的目的是点击文本框JTextField,能将文本框的内容添加到JList中去,请指教!初学者
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JTextField;
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import java.awt.event.MouseAdapter;public class Frame1 extends JFrame {
public Frame1() {
try {
jbInit();
} catch (Exception exception) {
exception.printStackTrace();
}
} private void jbInit() throws Exception {
getContentPane().setLayout(null);
jButton1.setBounds(new Rectangle(118, 219, 152, 33));
jButton1.setText("jButton1");
jButton1.addMouseListener(new Frame1_jButton1_mouseAdapter(this));
this.getContentPane().add(jButton1);
jList1.setBounds(new Rectangle(85, 63, 235, 124));
this.getContentPane().add(jTextField1);
this.getContentPane().add(jList1);
jTextField1.setText("jTextField1");
jTextField1.setBounds(new Rectangle(59, 19, 308, 24));
this.setSize(600,400);
this.setVisible(true);
this.setDefaultCloseOperation(this.EXIT_ON_CLOSE);
}
public static void main(String stra[]){
new Frame1();
} JButton jButton1 = new JButton();
JTextField jTextField1 = new JTextField();
JList jList1 = new JList();
public void jButton1_mouseClicked(MouseEvent e) {
Object obj[] = new Object[1];
obj[0]=jTextField1.getText();
jList1.setListData(obj);
}
}
class Frame1_jButton1_mouseAdapter extends MouseAdapter {
private Frame1 adaptee;
Frame1_jButton1_mouseAdapter(Frame1 adaptee) {
this.adaptee = adaptee;
} public void mouseClicked(MouseEvent e) {
adaptee.jButton1_mouseClicked(e);
}
}