file文件的复制拷贝

import java.io.*;

public class FileCopyExample {
    public static void main(String[] args) {
        // 源文件和目标文件的路径
        File sourceFile = new File("源文件路径.txt");
        File destFile = new File("目标文件路径.txt");

        // 复制文件
        try (InputStream in = new FileInputStream(sourceFile);
             OutputStream out = new FileOutputStream(destFile);
             BufferedInputStream bis = new BufferedInputStream(in);
             BufferedOutputStream bos = new BufferedOutputStream(out)) {

            byte[] buffer = new byte[1024];
            int bytesRead;

            // 读取和写入文件
            while ((bytesRead = bis.read(buffer)) != -1) {
                bos.write(buffer, 0, bytesRead);
            }

            bos.flush(); // 确保所有数据都被写入
            System.out.println("文件拷贝成功！");
        } catch (IOException e) {
            System.err.println("文件操作异常: " + e.getMessage());
        }
    }
}