Java小游戏DanceWithStars（二）：修改本地文档中的图片（图片宽高和图片类型）以及将图片设置为JButton的图像

 1 package dws1;
 2 
 3 import java.awt.image.BufferedImage;
 4 import java.io.File;
 5 import java.io.IOException;
 6 import javax.imageio.ImageIO;
 7 
 8 public class Pictures {
 9     //找到存储路径
10     static String IMAGE_PATH = "C:\\Users\\Yi\\eclipse-workspace\\DWS\\src\\dws1";
11     
12     //构造一个BufferedImage对象
13     public static BufferedImage oldImg;
14 
15     public static void main(String[] args) {
16         
17         //读入图片
18         try {
19             oldImg = ImageIO.read(new File(IMAGE_PATH + "\\trophy.png"));
20         } catch (IOException e) {
21             // TODO Auto-generated catch block
22             e.printStackTrace();
23         }
24         
25         //新建一个newImg对象，width和height都是100
26         BufferedImage newImg= new BufferedImage(100, 100, BufferedImage.TYPE_INT_BGR);
27         
28         
29         //把原来的图片oldImg画入新图片newImg中
30         newImg.(oldImg, 0, 0, 100, 100, null);
31         
32         
33         //将新生成的图片自定义后缀名，且自定义路径，存入文档中
34         try {
35             ImageIO.write(newImg, "jpg", new File(IMAGE_PATH+ "\\trophyP.jpg"));
36         } catch (IOException e) {
37             // TODO Auto-generated catch block
38             e.printStackTrace();
39         }
40         
41         
42     }
43 }

 1 import javax.swing.Icon;
 2 import javax.swing.ImageIcon;
 3 import javax.swing.JButton;
 4 import javax.swing.JFrame;
 5 
 6 public class c {
 7     static String IMAGE_PATH = "C:\\Users\\Yi\\eclipse-workspace\\DWS\\src\\dws1";
 8 
 9     public static void main(String args[]) {
10         JFrame frame = new JFrame("DefaultButton");
11         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
12         Icon warnIcon = new ImageIcon(IMAGE_PATH + "\\trophyP.jpg");
13         JButton button2 = new JButton(warnIcon);
14         frame.add(button2);
15         frame.setVisible(true);
16         frame.pack();
17     }
18 }