Java GetResource two ways to use

1. Create a new Java project;

2, a new test package under the Src/main/java;

3. Create a new Test.java file and file.txt file under the test package;

4, Test.java file content is written as follows:

 Package test; Import Java.net.URL;  Public class Test {    publicstaticvoid  main (string[] args) {        = Test. class. GetResource ("file.txt");        System.out.println (URL);         = Thread.CurrentThread (). Getcontextclassloader (). GetResource ("Test/file.txt");        System.out.println (URL);}    }  

The print result is the absolute path to the file.txt file, as follows:

file:/users/lay-mac/desktop/svn/ali-mine/web/chapter3/target/classes/test/file.txtfile:/Users/lay-mac /desktop/svn/ali-mine/web/chapter3/target/classes/test/file.txt

We have seen the two methods of calling GetResource:

1) Class Call

This method of invocation can be understood as relative to the location of the Test.class file

file:/users/lay-mac/desktop/svn/ali-mine/web/chapter3/target/classes/test/

Stitching on

File.txt

2) ClassLoader Call

The class loader invocation method can be understood as relative to the location of the classpath:

file:/users/lay-mac/desktop/svn/ali-mine/web/chapter3/target/classes/

Stitching on

Test/file.txt

Note: Both file.txt and text/file.txt cannot be preceded by "/", which will not be found to return null

Java GetResource two ways to use