将一个类文件对象传递给另一个类文件对象的write()方法

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

public class FileCopyExample {
    public static void main(String[] args) {
        try {
            FileInputStream inputFile = new FileInputStream("input.txt");
            FileOutputStream outputFile = new FileOutputStream("output.txt");

            byte[] buffer = new byte[1024];
            int bytesRead;
            while ((bytesRead = inputFile.read(buffer)) != -1) {
                outputFile.write(buffer, 0, bytesRead);
            }

            inputFile.close();
            outputFile.close();

            System.out.println("文件复制成功！");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}