Java - 从文件中读取.输入流与读者

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

public class InputStreamExample {
    public static void main(String[] args) throws IOException {
        FileInputStream inputStream = new FileInputStream("example.txt");
        
        int data;
        while ((data = inputStream.read()) != -1) {
            System.out.print((char) data);
        }
        
        inputStream.close();
    }
}

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

public class ReaderExample {
    public static void main(String[] args) throws IOException {
        String fileName = "example.txt";

        BufferedReader reader = new BufferedReader(new FileReader(fileName));
        String line;
        
        while ((line = reader.readLine()) != null) {
            System.out.println(line);
        }
        
        reader.close();
    }
}