字节输入流InputStream

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

public class FileInputStreamDemo {
    public static void main(String[] args) throws IOException {
        File file = new File("E:\\IO流\\java\\1.txt");
        FileInputStream f = new FileInputStream(file);
        ;
        ) {
            System.out.print((char) n);

        }
        f.close();
    }
}

2、缓冲流BufferedInputStream

package pers.zaw.in;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

public class BufferedInputStreamDemo {
    public static void main(String[] args) throws IOException {
        File file = new File("E:\\IO流\\java\\1.txt");
        FileInputStream f = new FileInputStream(file);
        BufferedInputStream in = new BufferedInputStream(f);
        ;

        ) {
            System.out.print((char) n);

        }

        in.close();
    }
}