IO流

Posted 2022-01-15 zhangkaiz

package three;

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

public class IO 

    public static void main(String[] args) 
        File file = new File("data.txt");
        System.out.println("路径："+file.getAbsolutePath());
        try 
            FileOutputStream out = new FileOutputStream(file);
            byte[] str = "[email protected]#%&*软件工程".getBytes();
            out.write(str);
            out.close();
        catch(Exception e) 
            e.printStackTrace();
        
        try 
            FileInputStream in = new FileInputStream(file);
            byte[] str1 = new byte[100];
            int length = in.read(str1);
            System.out.println("文件中的信息是："+ new String(str1,0,length));
            in.close();
        catch(Exception e) 
            e.printStackTrace();