import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class FileIO {
public static void main(String[] args) {
FileOutputStream fos=null;
FileInputStream fis=null;
try{
fos=new FileOutputStream("G:\\my.bmp");
fis=new FileInputStream("G:\\process.png");
byte[] buf=new byte[1024];
int len=0;
while((len=fis.read(buf))!=-1){
fos.write(buf,0,len);
}
}catch(IOException e){
throw new RuntimeException("复制文件失败");
}finally{
try{
if(fis!=null){
fis.close();
}
}catch (IOException e2) {
throw new RuntimeException("读取文件失败");
}
try{
if(fos!=null){
fos.close();
}
}catch (IOException e2) {
throw new RuntimeException("写入文件失败");
}
}
}
}