java图片格式转化（例如jpg格式转化png）详解编程语言

[Java]代码    

import java.awt.image.BufferedImage; 
import java.io.File; 
import java.io.IOException; 
import java.util.Scanner; 
 
import javax.imageio.*; 
public class FormatConversion { 
	public static final String JPG = "jpg"; 
	public static final String GIF = "gif"; 
	public static final String PNG = "png"; 
	public static final String BMP = "bmp"; 
	public static void main(String[] args) { 
		String src = "E://2."; 
		new FormatConversion().Conversion(JPG,PNG,src);//JPG转成PNG 
		new FormatConversion().Conversion(JPG,GIF,src);//JPG转成GIF 
		new FormatConversion().Conversion(JPG,BMP,src);//JPG转成BMP 
		//其余格式转化只要调用Conversion函数即可 
	} 
	 
	//inputFormat表示原格式，outputFormat表示转化后的格式 
	public  void Conversion(String inputFormat,String outputFormat,String src){ 
		 
		try { 
			File input = new File(src+inputFormat); 
			BufferedImage bim = ImageIO.read(input); 
			File output = new File(src+outputFormat); 
			ImageIO.write(bim, outputFormat, output); 
		} catch (IOException e) { 
			e.printStackTrace(); 
		} 
	} 
 
}