数据io

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

public class haz {
      public static void main(String[] args) {
            File file = new File("word.txt");
            try {
                file.createNewFile();
                FileWriter out = new FileWriter(file);
                BufferedWriter bw = new BufferedWriter(out);
                bw.write("12345abcdef@#%&*软件工程");
                bw.close();
                out.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            
        }


}

import java.io.*;

public class hax {
    public static void main(String[] args) {
        File file = new File("word.txt");
        try {
            file.createNewFile();
            FileReader fis = new FileReader(file);
            BufferedReader br = new BufferedReader(fis);  
            String str;
            while ((str = br.readLine()) != null)
            {
              System.out.println(str);
            }
            br.close();
            fis.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}