Question

我的这个Java程序怎么修改，按钮才有选择图片的功能

import java.awt.*;

import java.net.URL;

import javax.swing.*;

public class lianxi1 extends JFrame{
Image img;
JButton jbutton;
public lianxi1(){
URL imgUrl=URL.class.getResource("/img1.jpg");
img=Toolkit.getDefaultToolkit().getImage(imgUrl);
jbutton=new JButton("旋转") ;
this.setSize(500,500);
this.setTitle("绘图图片");
this.add(new lianxi());

}
public static void main(String[] args) {
new lianxi1().setVisible(true);}
class lianxi extends Canvas{
public void paint(Graphics g){
super.paint(g);
Graphics2D g2=(Graphics2D)g;
g2.drawImage(img,0,0,this);
g2.rotate(60);

}
}
}

Answer 1

图片运用:

URL url=test6.class.getResource("Icom/test.png");
Icon icon=new ImageIcon(url);
label.setIcon(icon);
or
ClassLoader cl=this.getClass().getClassLoader();

label.setIcon(new ImageIcon(cl.getResource("Icom/test.png")));

追问

为什么没有旋转的角度

追答

那你可能要改这个了!!!

这个是方法!!!