Java第四次作业

import java.io.FileInputStream;  
import java.io.FileOutputStream;
import java.io.IOException;
public class CopyFile {
	public static void main(String[] args) {
        // TODO Auto-generated method stub
         CopyMp3 cy = new CopyMp3();
         cy.copy();
    }
    
}
class CopyMp3{
    public void CopyMp3(){}
    void  copy(){
		long starttime = System.currentTimeMillis();
		try {
			FileInputStream fis = new FileInputStream("src/a.mp3");
			FileOutputStream fos = new FileOutputStream("src/temp.mp3");
			byte[] b = new byte[1024];
			int read = fis.read(b);
			while(read!=-1){
				fos.write(b);
				read = fis.read(b);
			}
			fis.close();
			fos.close();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		long endtime = System.currentTimeMillis();
		System.out.println("用时:"+(endtime-starttime)+"ms");
	
	}
}