java_IO读写模版

InputStream in = null;
OutputStream out = null;

try{
in = new FileInputStream();
int len=0;
byte buffer[] = new byte[1024];
out = new FileOutputStream();
while((len=in.read(buffer))>0){
out.write(buffer,0,len);
}
}finally{
if(in!=null){
try{
in.close();
}catch(Exception e){
e.printStackTrace();
}

}
if(out!=null){
try{
out.close();
}catch(Exception e){
e.printStackTrace();
}

}
}