I/O

Posted 2022-01-26 6825186a

package qwe;
import java.io.;
public class Qwe
public static void main(String[] args) throws IOException
File f=new File("C:\data.txt");
try
FileOutputStream out=new FileOutputStream(f);
byte str[]="[email protected]#%&软件工程".getBytes();
out.write(str);
out.close();
catch (FileNotFoundException e)
e.printStackTrace();

try
FileInputStream in=new FileInputStream(f);
byte byt[]=new byte[1024];
int len=in.read(byt);
String ss = null;
System.out.println("文件中的信息是："+ ss);
in.close();
catch(Exception e)
e.printStackTrace();