1    package j2d.io; 
2     
3    import j2d.ImageUtils; 
4     
5    import javax.imageio.ImageIO; 
6    import javax.imageio.ImageReader; 
7    import java.awt.*; 
8    import java.awt.image.BufferedImage; 
9    import java.io.File; 
10   import java.io.IOException; 
11   import java.util.Iterator; 
12    
13   public class TestImageIO{ 
14       public static void main(String args[]) { 
15           System.out.println("Writer formats:"); 
16           printImageWriterFormats(); 
17           System.out.println("Reader formats:"); 
18           printImageReaderFormats(); 
19       } 
20        
21       public static void printImageWriterFormats() { 
22           print(ImageIO.getWriterFormatNames()); 
23       } 
24       public static Image getPNGImage(File f){ 
25           Iterator it = ImageIO.getImageReadersBySuffix("png"); 
26           while (it.hasNext()){ 
27               ImageReader ir = (ImageReader)it.next(); 
28               try { 
29                   BufferedImage bi = ir.read(0); 
30                   return ImageUtils.getImage(bi); 
31               } catch (IOException e) { 
32               } 
33           } 
34           return null; 
35       } 
36    
37       public static void printImageReaderFormats() { 
38           print(ImageIO.getReaderFormatNames()); 
39       } 
40        
41       public static void print(Object o[]) { 
42           for (int i=0; i < o.length;i++) 
43               System.out.println(o[i]); 
44       } 
45   } 
46