How to distinguish between absolute paths and relative paths in java

The example in this article describes how Java distinguishes between absolute paths and relative paths. Share it with everyone for your reference. The specific analysis is as follows:

What needs to be distinguished here is the directory path

like:

/opt/deve/tomcat/bin
c:/deve/tomcat/bin
All are absolute directory paths

bin
bin/data
bin/data
All are relative directory paths

Discover patterns through observation

Anything that starts with / or contains / or // is an absolute path; anything that starts with / or contains : is an absolute path, otherwise it is a relative path.

Introducing several methods:

 startsWithpublic class Stringutil { public static void main(String[] args) { String path = "/opt/bin"; System.out.println(path.startsWith("/")); }}

Result: true
indexOf

Final result:

 /** * Pass in the path and return whether it is an absolute path. If it is an absolute path, it returns true, otherwise * * @param path * @return * @since April 21, 2015 */public boolean isAbsolutePath(String path) { if ( path.startsWith("/") || path.indexOf(":") > 0) { return true; } return false;}

I hope this article will be helpful to everyone’s Java programming.