Home Java JavaBase How to write the file path in java

How to write the file path in java

Nov 20, 2019 pm 02:53 PM
java path

How to write the file path in java

java的文件路径怎么写

java中文件路径可以使用正斜杠“/”和反斜杠“\”,但是反斜杠需要进行转义,写成“\\”才能够被识别。

String path = "D:\\新建文件夹\\2.png";
File file = new File(path);
System.out.println(file.exists());
String path1 = "D:/新建文件夹/2.png";
File file1 = new File(path);
System.out.println(file1.getAbsolutePath());
System.out.println(file1.getCanonicalPath());
Copy after login

“\”和“/”的区别

“/”和“\”具体使用中都可以达到访问路径的效果

正斜杠的话,一般在配置文件路径时,指向下一个路径只要使用一个

例如:"c:/a/1.txt";

而反斜杠的话,在配置文件路径时,由于它本身在java中有特殊意义,作为转义符而存在,所以具体意义上的反斜杠要两个

例如:"c\\a\\1.txt"; 这里的第一个反斜杠是作为转义符存在的,第二个才是真正意义上的反斜杠

一般可以认为是"/"的作用等同于"\\"

在java中路径一般用"/"

windows中的路径一般用"\"

linux、unix中的路径一般用"/"

最好用“/” 因为java是跨平台的。“\”(在java代码里应该是\\)是windows环境下的路径分隔符,Linux和Unix下都是用“/”。而在windows下也能识别“/”。所以最好用“/”

//path得到的路径D:\ProgramFiles\apache\webapps\monkey\upload
String path = request.getSession().getServletContext().getRealPath("/upload/");
Copy after login

因为一个\代表转义字符,所以真实的路径应为D:\\ProgramFiles\\apache\\webapps\\monkey\\upload,,这个才是java能够识别的,以上的path并不能被识别会报错通过new File(path)的方法并不能正确建立文件。而使用这个真实的路径是可以的

如果需要改成反斜杠,就用以下替换path = path.replaceAll("\\\\", "/");

php中文网,大量的免费Java入门教程,欢迎在线学习! 

The above is the detailed content of How to write the file path in java. For more information, please follow other related articles on the PHP Chinese website!

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

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

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
WWE 2K25: How To Unlock Everything In MyRise
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Perfect Number in Java Perfect Number in Java Aug 30, 2024 pm 04:28 PM

Guide to Perfect Number in Java. Here we discuss the Definition, How to check Perfect number in Java?, examples with code implementation.

Random Number Generator in Java Random Number Generator in Java Aug 30, 2024 pm 04:27 PM

Guide to Random Number Generator in Java. Here we discuss Functions in Java with examples and two different Generators with ther examples.

Weka in Java Weka in Java Aug 30, 2024 pm 04:28 PM

Guide to Weka in Java. Here we discuss the Introduction, how to use weka java, the type of platform, and advantages with examples.

Smith Number in Java Smith Number in Java Aug 30, 2024 pm 04:28 PM

Guide to Smith Number in Java. Here we discuss the Definition, How to check smith number in Java? example with code implementation.

Java Spring Interview Questions Java Spring Interview Questions Aug 30, 2024 pm 04:29 PM

In this article, we have kept the most asked Java Spring Interview Questions with their detailed answers. So that you can crack the interview.

Break or return from Java 8 stream forEach? Break or return from Java 8 stream forEach? Feb 07, 2025 pm 12:09 PM

Java 8 introduces the Stream API, providing a powerful and expressive way to process data collections. However, a common question when using Stream is: How to break or return from a forEach operation? Traditional loops allow for early interruption or return, but Stream's forEach method does not directly support this method. This article will explain the reasons and explore alternative methods for implementing premature termination in Stream processing systems. Further reading: Java Stream API improvements Understand Stream forEach The forEach method is a terminal operation that performs one operation on each element in the Stream. Its design intention is

TimeStamp to Date in Java TimeStamp to Date in Java Aug 30, 2024 pm 04:28 PM

Guide to TimeStamp to Date in Java. Here we also discuss the introduction and how to convert timestamp to date in java along with examples.

Create the Future: Java Programming for Absolute Beginners Create the Future: Java Programming for Absolute Beginners Oct 13, 2024 pm 01:32 PM

Java is a popular programming language that can be learned by both beginners and experienced developers. This tutorial starts with basic concepts and progresses through advanced topics. After installing the Java Development Kit, you can practice programming by creating a simple "Hello, World!" program. After you understand the code, use the command prompt to compile and run the program, and "Hello, World!" will be output on the console. Learning Java starts your programming journey, and as your mastery deepens, you can create more complex applications.

See all articles