【File类：创建文件和文件夹】

package com.companyname.common.test;

import java.io.File;
import java.io.IOException;

/**
 * @author shusheng
 * @description
 * @Email shusheng@yiji.com
 * @date 2018/10/12 16:29
 */
public class FileDemo2 {

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

        File file1 = new File("D:\test1");
        System.out.println("mkdir:"+file1.mkdir());

//        File file2 = new File("D:\test2\a.txt");
//        System.out.println("createNewFile:"+file2.createNewFile());
        /**Exception in thread "main" java.io.IOException: 系统找不到指定的路径。
         at java.io.WinNTFileSystem.createFileExclusively(Native Method)
         at java.io.File.createNewFile(File.java:1012)
         at com.bornsoft.test.capitalpool.tyc.FileDemo2.main(FileDemo2.java:20)*/

        /**创建多层目录（文件夹）*/
        File file3 = new File("D:\test6\test2\test3\test4");
        System.out.println("mkdirs:"+file3.mkdirs());
    }

}