如何在java消息框中添加背景图片？

如何在下面的程序弹出的框中添加图片：
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import javax.swing.JOptionPane;
public class Test14 {


public static void main(String[] args) {
Neusoft_IP ip = new Neusoft_IP();
int i = ip.getIp();
Object[] options = {"宽带1","宽带2"};
Object n = JOptionPane.showInputDialog(null, "选择:", "宽带选择", JOptionPane.DEFAULT_OPTION, null, options, options[0]);
try {
Process p = Runtime.getRuntime().exec("Netsh");
BufferedOutputStream w = new BufferedOutputStream(p.getOutputStream());
final BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream()));
Thread t = new Thread() {
public void run() {
try {
String line;
while ((line = r.readLine()) != null) {
System.out.println(line);
}
r.close();
} catch (Exception e) {
}
}
};
t.start();
w.write("interface ip\r\n".getBytes());
if ("宽带1".equals(n)) {
w.write("set address \"本地连接\" dhcp\r\n".getBytes());
w.write("set dns \"本地连接\" dhcp\r\n".getBytes());
String str2="宽带切换成功!";
JOptionPane.showMessageDialog(null,str2);
}
else if ("宽带2".equals(n)) {
w.write("set address \"本地连接\" dhcp\r\n".getBytes());
w.write("set dns \"本地连接\" dhcp\r\n".getBytes());
String str1="宽带切换成功!";
JOptionPane.showMessageDialog(null,str1);
}
w.flush();
w.write("quit\r\n".getBytes());
w.flush();
w.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
谢谢！

使用java.swing.ImageIcon类，然后在弹出消息对话框的时候用
ImageIcon image = ....;
JOptionPane.showMessageDialog(null,image);
就可以了

如果你的图片在你的硬盘上，例如：C:\1.jpg
ImageIcon 的构造方法可以用：
ImageIcon image = new ImageIcon("c:\\1.jpg");

import java.io.BufferedOutputStream; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import javax.swing.JOptionPane; public class Test14 { public static void main(String[] args) { Neusoft_IP ip = new Neusoft_IP(); int i = ip.getIp(); Object[] options = {"宽带1","宽带2"}; Object n = JOptionPane.showInputDialog(null, "选择:", "宽带选择", JOptionPane.DEFAULT_OPTION, null, options, options[0]); try { Process p = Runtime.getRuntime().exec("Netsh"); BufferedOutputStream w = new BufferedOutputStream(p.getOutputStream()); final BufferedReader r = new BufferedReader(new InputStreamReader(p.getInputStream())); Thread t = new Thread() { public void run() { try { String line; while ((line = r.readLine()) != null) { System.out.println(line); } r.close(); } catch (Exception e) { } } }; t.start(); w.write("interface ip\r\n".getBytes()); if ("宽带1".equals(n)) { w.write("set address \"本地连接\" dhcp\r\n".getBytes()); w.write("set dns \"本地连接\" dhcp\r\n".getBytes()); String str2="宽带切换成功!"; JOptionPane.showMessageDialog(null,str2); } else if ("宽带2".equals(n)) { w.write("set address \"本地连接\" dhcp\r\n".getBytes()); w.write("set dns \"本地连接\" dhcp\r\n".getBytes()); String str1="宽带切换成功!"; JOptionPane.showMessageDialog(null,str1); } w.flush(); w.write("quit\r\n".getBytes()); w.flush(); w.close(); } catch (IOException e) { e.printStackTrace(); } } }

public void paintComponent(Graphics g) { ImageIcon icon = new ImageIcon("D://workspace//Amyself//src//2009517719856277802.jpg"); g.drawImage(icon.getImage(), 0, 0, frame.getSize().width,frame.getSize().height,frame); }

import javax.swing.*; joptionpane.showmessagedialog(this,"消息内容");

可以新建个面板，在面板里放入带图片的JLabel，填满面板即可。 JPanel jp = new JPanel(); //新建面板 jp.setLayout(new FlowLayout()); //设置面板布局 ImageIcon ii=new ImageIcon(getClass().getResource("/Picture/i.jpg")); JLabel uppicture=new JLabel(ii); //往面板里加入JLabel this.setVisible(true);下面是一个完整代码的例子; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class ks extends JFrame implements ActionListener {     private static final Color red = null;     private JPanel jp = new JPanel();     JPanel topjp = new JPanel();     JPanel leftjp = new JPanel();     JPanel rightjp = new JPanel();     JButton cmanage = new JButton("客户资料管理");     JButton pmanage = new JButton("售票管理");     JButton wmanage = new JButton("票务管理");     JButton smanage = new JButton("购送票管理");     JButton dmanage = new JButton("定单信息管理");     JLabel index = new JLabel("航空订票系统");     Font jbfont = new Font("宋体", Font.BOLD, 20);     Font indexfont = new Font("华文隶书", Font.BOLD + Font.ITALIC, 50);     JLabel gnumber = new JLabel("管理员帐号");     JTextField textgnumber = new JTextField();     JLabel mname = new JLabel("密码");     JTextField textmname = new JTextField();     JButton select = new JButton("查询");     private JButton[] jb = { cmanage, dmanage, pmanage, smanage, wmanage };     JTable table = new JTable();     public Image image;     public ks() {         jp.setLayout(null);         leftjp.setLayout(null);         rightjp.setLayout(null);         jp.add(topjp);         jp.add(leftjp);         jp.add(rightjp);         leftjp.setBounds(0, 50, 230, 700);         topjp.add(index);         topjp.setBounds(0, 0, 1000, 70);         topjp.setBackground(Color.darkGray);         leftjp.setBackground(Color.lightGray);         rightjp.setBounds(200, 50, 800, 700);         rightjp.add(gnumber);         rightjp.add(textgnumber);         rightjp.add(mname);         rightjp.add(textmname);         rightjp.add(select);         for (int i = 0; i < 5; i++) {             jb[i].setBounds(20, 50 + i * 80, 180, 60);             leftjp.add(jb[i]);             jb[i].setFont(jbfont);             jb[i].addActionListener(this);         }         index.setFont(indexfont);         index.setForeground(Color.white);         gnumber.setBounds(70, 30, 100, 30);         textgnumber.setBounds(150, 30, 100, 30);         mname.setBounds(280, 30, 100, 30);         textmname.setBounds(330, 30, 100, 30);         select.setBounds(490, 30, 100, 30);         JLabel jl = new JLabel(new ImageIcon("C:\\Users\\LR\\Desktop\\1.png"));         jl.setBounds(0, 0, 1000, 700);         this.getLayeredPane().add(jl);// 设置背景为图片         this.add(jp);         this.setTitle("航空订票系统");         this.setBounds(0, 0, 1000, 700);         this.setVisible(true);         this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);     }     public void actionPerformed(ActionEvent e) {         if (e.getSource() == jb[0]) {         }     }     public static void main(String[] args) {         new ks();     } }