Question

java 中如何设置背景图片

java 中如何设置背景图片

Answer 1

没有这样的方法
但是可以自己做一个这样的JavaBean
这是我做的一个继承JPanel可以实现设置背景的JavaBean
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Insets;
import java.awt.LayoutManager;

import javax.swing.JPanel;

public class PanelBean extends JPanel {

private static final long serialVersionUID = 1L;
private Image image;

public PanelBean(LayoutManager layout, boolean isDoubleBuffered) {
super(layout, isDoubleBuffered);
}

public PanelBean(LayoutManager layout) {
this(layout, true);
}

public PanelBean(boolean isDoubleBuffered) {
this(new FlowLayout(), isDoubleBuffered);
}

public PanelBean() {
this(true);
}

public Image getImage() {
return image;
}

public void setImage(Image image) {
this.image = image;

}

public void paintImage(Image image) {
Graphics g = this.getGraphics();
Insets insets = this.getInsets();
if (insets == null)
g.drawImage(image, 0, 0, this);
else
g.drawImage(image, insets.left, insets.top, this);
}

public void paintImage() {
this.paintImage(this.image);
}

}

Answer 2

ImageIcon image = new ImageIcon("")
JLabel label = new JLabel(image);
this.getContentPane().add(label);
//我手写的，可能有大小写的错误啥的哈。