Pilih kelas Java yang sesuai untuk membaca dan menulis fail

import java.io.*;

public class FileReaderExample {
    public static void main(String[] args) {
        try {
            FileInputStream fis = new FileInputStream("example.txt");
            int content;
            while ((content = fis.read()) != -1) {
                System.out.print((char) content);
            }
            fis.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

import java.io.*;

public class FileWriterExample {
    public static void main(String[] args) {
        try {
            FileOutputStream fos = new FileOutputStream("example.txt");
            String content = "Hello, World!";
            fos.write(content.getBytes());
            fos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

import java.io.*;

public class BufferedReaderExample {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new FileReader("example.txt"));
            String line;
            while ((line = br.readLine()) != null) {
                System.out.println(line);
            }
            br.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

import java.io.*;

public class BufferedWriterExample {
    public static void main(String[] args) {
        try {
            BufferedWriter bw = new BufferedWriter(new FileWriter("example.txt"));
            String content = "Hello, World!";
            bw.write(content);
            bw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

import java.io.*;
import java.util.Scanner;

public class ScannerExample {
    public static void main(String[] args) {
        try {
            Scanner scanner = new Scanner(new File("example.txt"));
            while (scanner.hasNextLine()) {
                String line = scanner.nextLine();
                System.out.println(line);
            }
            scanner.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }
}

import java.io.*;

public class PrintWriterExample {
    public static void main(String[] args) {
        try {
            PrintWriter writer = new PrintWriter("example.txt");
            String content = "Hello, World!";
            writer.println(content);
            writer.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }
}