IO

对于其他的IO操作，Java提供了几种不同的方式，以下是几个例子：

使用传统的阻塞IO（Java IO）:

import java.io.*;

public class ClassicIOExample {
    public static void main(String[] args) {
        try (BufferedReader reader = new BufferedReader(new FileReader("input.txt"));
             BufferedWriter writer = new BufferedWriter(new FileWriter("output.txt"))) {
            String line;
            while ((line = reader.readLine()) != null) {
                writer.write(line);
                writer.newLine();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

使用Java NIO的文件通道来快速复制文件:

import java.io.IOException;
import java.nio.channels.FileChannel;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;

public class FastFileCopy {
    public static void main(String[] args) {
        Path sourcePath = Paths.get("input.txt");
        Path destinationPath = Paths.get("output.txt");

        try (FileChannel sourceChannel = FileChannel.open(sourcePath, StandardOpenOption.READ);
             FileChannel destChannel = FileChannel.open(destinationPath, StandardOpenOption.WRITE, StandardOpenOption.CREATE)) {

            sourceChannel.transferTo(0, sourceChannel.size(), destChannel);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

使用Java 7+的Files类进行简化的文件操作:

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;

public class FilesHelper {
    public static void main(String[] args) {
        Path inputFile = Paths.get("input.txt");
        Path outputFile = Paths.get("output.txt");

        try {
            List<String> lines = Files.readAllLines(inputFile);
            Files.write(outputFile, lines);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

在实际开发中，应根据具体需求选择最适合的IO模型。Java NIO是一个非常强大的工具，特别是在处理大量数据和高并发场景下。