[Java] resize image + imagebutton

1.  // resize image + make imagebutton
2. 
   
3.  JPanel panel = new JPanel();
4.              panel.setLayout(null); // set 了layout是null後必需調用setBounds
5.              panel.setBounds(0, 0, 200 , 200); // 參數1: x座標; 2:y座標; 3:width; 4:height
6. 
   
7.              
8.      ImageIcon img = new ImageIcon(getClass().getResource("/lam/images/1.jpg"));
9.  
10.               // resize img width and height to 100,100
11. 
    
12.               Image image = img.getImage();
13.               Image newimg = image.getScaledInstance(100, 100, java.awt.Image.SCALE_SMOOTH);
14.               img = new ImageIcon(newimg);
15.  
16.                // add image to button
17.                              
18.               JButton btn = new JButton();
19.               btn.setBorder(LineBorder.createGrayLineBorder());
20.               btn.setIcon(img);  
21.               btn.setBounds(0, 0, 150, 120);
22. 
    
23.       panel.add(btn);
24.