java字节流字符流复制文件

在Java中，字节流和字符流都可以用来复制文件。下面是使用字节流和字符流分别复制文件的示例代码：

1. 使用字节流复制文件

import java.io.*;

public class ByteStreamCopy {
    public static void main(String[] args) {
        try {
            FileInputStream fis = new FileInputStream("source.txt");
            FileOutputStream fos = new FileOutputStream("target.txt");
            byte[] buffer = new byte[1024];
            int len;
            while ((len = fis.read(buffer)) > 0) {
                fos.write(buffer, 0, len);
            }
            fis.close();
            fos.close();
            System.out.println("File copied successfully.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

2. 使用字符流复制文件

import java.io.*;

public class CharacterStreamCopy {
    public static void main(String[] args) {
        try {
            FileReader fr = new FileReader("source.txt");
            FileWriter fw = new FileWriter("target.txt");
            char[] buffer = new char[1024];
            int len;
            while ((len = fr.read(buffer)) > 0) {
                fw.write(buffer, 0, len);
            }
            fr.close();
            fw.close();
            System.out.println("File copied successfully.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}