java创建一个可以放置九张图片的窗口,每张图片填充整个窗口,窗口上用按键切换图片
时间: 2023-05-23 09:06:09 浏览: 55
A:可以使用Java Swing创建一个包含九个图片面板的窗口,并在窗口上添加按键来切换不同的图片。以下是一个简单的示例代码:
```java
import java.awt.BorderLayout;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.io.File;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class ImageWindow implements KeyListener {
private JFrame frame;
private JPanel panel;
private JLabel[] imageLabels;
private int currentImageIndex;
public ImageWindow() {
frame = new JFrame("Image Window");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(800, 600);
panel = new JPanel(new BorderLayout());
imageLabels = new JLabel[9];
for (int i = 0; i < 9; i++) {
imageLabels[i] = new JLabel();
panel.add(imageLabels[i]);
}
currentImageIndex = 0;
showCurrentImage();
frame.addKeyListener(this);
frame.setContentPane(panel);
frame.setVisible(true);
}
private void showCurrentImage() {
ImageIcon imageIcon = new ImageIcon(new File("image" + currentImageIndex + ".jpg").getAbsolutePath());
int width = panel.getWidth() / 3;
int height = panel.getHeight() / 3;
imageIcon.setImage(imageIcon.getImage().getScaledInstance(width, height, ImageIcon.SCALE_SMOOTH));
for (int i = 0; i < 9; i++) {
imageLabels[i].setIcon(imageIcon);
}
}
@Override
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();
if (keyCode >= KeyEvent.VK_0 && keyCode <= KeyEvent.VK_9) {
currentImageIndex = keyCode - KeyEvent.VK_0;
showCurrentImage();
}
}
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void keyTyped(KeyEvent e) {
}
public static void main(String[] args) {
new ImageWindow();
}
}
```
该示例使用一个包含九个标签的面板来显示图片,并使用 BorderLayout 来设置布局。按键消息由实现 KeyListener 接口的主类 ImageWindow 来处理,按下数字键将设置当前图像的索引,然后调用 showCurrentImage() 方法显示更新后的图像。可以查看本示例来获取更多的细节信息。