Java/com/study/demo5/Main.java

package com.study.demo5;

 public class Main {
    public static void main(String[] args) {
        // 7.1 测试
        FileCopy fc = new FileCopy();
        fc.copy("source.txt", "target.txt");
        // 7.2 测试
        DataIO dataIO = new DataIO();
        dataIO.writeConfig("config.bin");
        dataIO.readConfig("config.bin");
        // 7.3 测试
        FileStat fs = new FileStat();
        long size = fs.countBytes("test3.txt");
        System.out.println("文件大小: " + size + " 字节");
    }
}