复制文件读取(字节数据) ，写字节数据

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

public class Main {

public static void main(String[] args) throws Exception {

FileInputStream fin = null;

FileOutputStream fout = null;

File file = new File("C:/myfile1.txt");

fin = new FileInputStream(file);

fout = new FileOutputStream("C:/myfile2.txt");

byte[] buffer = new byte[1024];

int bytesRead;

while ((bytesRead = fin.read(buffer)) > 0) {

fout.write(buffer, 0, bytesRead);

}

fin.close();

fout.close();

}

}