Question

JAVA怎么在背景图片上绘图

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class bkground extends JFrame {

public bkground() {
//设置标题
super("定位");
setSize(500, 400);
setLocation(200, 50);
String path = "111.jpg";
ImageIcon background = new ImageIcon(path);
JLabel label = new JLabel(background);
label.setBounds(0, 0, this.getWidth(), this.getHeight());
JPanel imagePanel = (JPanel) this.getContentPane();
imagePanel.setOpaque(false);
this.getLayeredPane().add(label, new Integer(Integer.MIN_VALUE));
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new bkground();
new Draw_oval().paint(null);
}
}

import java.applet.*;
import java.awt.*;
public class Draw_oval extends Applet
{
public void paint(Graphics g)
{
g.setColor(Color.red);
g.fillOval(10,10,10,10);
}
}

Answer 1

画图只是一个简单的做图小工具
不能设置为透明
你可以最其他软件做 PHOTOSHOP或是FIREWORKS