Home > Java > JavaBase > body text

Determine whether a file or folder exists in java

王林
Release: 2019-11-19 10:49:51
Original
4689 people have browsed it

Determine whether a file or folder exists in java

1、判断文件是否存在,不存在创建文件

File file=new File("C:\\Users\\QPING\\Desktop\\JavaScript\\2.htm");    
if(!file.exists())    
{    
    try {    
        file.createNewFile();    
    } catch (IOException e) {    
        // TODO Auto-generated catch block    
        e.printStackTrace();    
    }    
}
Copy after login

2、判断文件夹是否存在,不存在创建文件夹

File file =new File("C:\\Users\\QPING\\Desktop\\JavaScript");    
//如果文件夹不存在则创建    
if  (!file .exists()  && !file .isDirectory())      
{       
    System.out.println("//不存在");  
    file .mkdir();    
} else   
{  
    System.out.println("//目录存在");  
}
Copy after login

备注:文件路径是filePath = D:\word\111\test.txt 带文件的,使用getParentFile 获取父文件

if(!file.getParentFile().isDirectory()){
            file.getParentFile().mkdirs();
        }
Copy after login

推荐教程:java快速入门

The above is the detailed content of Determine whether a file or folder exists in java. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template