Question

如何在java窗体中插入GIF图

怎样写代码啊.不要太长.可以运行的.
不要功能太强大的啊,单纯的插入就好.

Answer 1

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;

public class ImageViewer
{
public static void main(String[] args)
{
JFrame frame = new ImageViewerFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.show();
}
}

class ImageViewerFrame extends JFrame
{
public ImageViewerFrame()
{
setTitle("ImageViewer");
setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);

label = new JLabel();
Container contentPane = getContentPane();
contentPane.add(label);

chooser = new JFileChooser();
chooser.setCurrentDirectory(new File("."));
JMenuBar menuBar = new JMenuBar();
setJMenuBar(menuBar);
JMenu menu = new JMenu("File");
menuBar.add(menu);

JMenuItem openItem = new JMenuItem("Open");
menu.add(openItem);
openItem.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent evt)
{
int r = chooser.showOpenDialog(null);
if(r == JFileChooser.APPROVE_OPTION)
{
String name
= chooser.getSelectedFile().getPath();
label.setIcon(new ImageIcon(name));
}
}
});

JMenuItem exitItem = new JMenuItem("Exit");
menu.add(exitItem);
exitItem.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent event)
{
System.exit(0);
}
});
}

private JLabel label;
private JFileChooser chooser;
private static final int DEFAULT_WIDTH = 300;
private static final int DEFAULT_HEIGHT = 400;
}

Answer 2

JLabel(Icon image)

创建具有指定图像的 JLabel 实例。
加载图片后，可以直接创建一个jlabel显示