I/O流

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

public class ccc {

    public static void main(String[] args) {
        File file=new File("Word.txt");
        try{
            FileOutputStream out=new FileOutputStream(file);
            byte p[]="12345abcdef@#%&*软件工程".getBytes();
            out.write(p);
            out.close();
        }catch(Exception e){
            e.printStackTrace();
        }
        try{
            FileInputStream in=new FileInputStream(file);
            byte q[]=new byte[1024];
            int len=in.read(q);
            System.out.println("文件中的信息为："+new String(q,0,len));
            in.close();
        }catch(Exception e){
            e.printStackTrace();
        }
    }

}