search
HomeJavaJavaBaseHow to determine whether a file folder exists in java (code attached)

How to determine whether a file folder exists in java (code attached)

1、判断文件夹是否存在,不存在则创建:(java相关视频教程推荐:java视频教程

File folder = new File("d:\\test1\\test2");
if (!folder.exists() && !folder.isDirectory()) {
    folder.mkdirs();
    System.out.println("创建文件夹");
} else {
    System.out.println("文件夹已存在");
}

public boolean exists()测试此抽象路径名表示的文件或目录是否存在,返回:当且仅当此抽象路径名表示的文件或目录存在时,返回true;否则返回false。

java中的isDirectory()是检查一个对象是否是文件夹。返回值是boolean类型的。如果是则返回true,否则返回false。

调用方法为:对象.isDirectory() 无需指定参数。

2、判断文件是否存在,不存在则创建

File file = new File("d:\\test.txt");
if (!file.exists()) {
    try {
        file.createNewFile();
    } catch (IOException e) {
        e.printStackTrace();
    }
    System.out.println("文件已创建");
} else {
    System.out.println("文件已存在");
}

更多java相关文章请关注java基础教程栏目。

The above is the detailed content of How to determine whether a file folder exists in java (code attached). For more information, please follow other related articles on the PHP Chinese website!

Statement
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

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft