利用JAVA程序将所有JAVA文件内容添加到一个文件中(代码加注释详解)
package A1;import java.io.*;/** * @author yeqv * @program A2 * @Classname a4 * @Date 2022/1/18 17:06 * @Email w16638771062@163.com */public class a4 { public static void main(String[] args) throws FileNotFoundException { File file =