字节流复制文件 java

代码

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

public class T3字节流复制文件 {
    public static void main(String[] args) throws IOException {

        // 输入流对象
        FileInputStream fis = new FileInputStream("test.txt");
        // 输出流对象
        FileOutputStream fos = new FileOutputStream("test_copy.txt");
        // 遍历读内容
        byte[] bytes = new byte[6];
        int len;
        while ((len = fis.read(bytes)) != -1) {
            fos.write(bytes, 0, len);
        }
        // 完成
        System.out.println("操作完毕");
    }
}