如何访问资源以进行Java读写

Question

In the past I have included my 'resources' directory as a source folder (so my resources end up packaged in the final JAR), and retrieved resources using classLoader.getResource() . However, this only works for reading resources, not writing them.

What is the recommended way to access resources for both reading and writing? I am aware of the following methods but both have disadvantages:

1. System.getProperty("user.dir") - this relies on the user running the program from a particular working directory.
2. System.getProperty("user.home") - this relies on the resources being installed to the user's home directory.

Answer 1

Try getClass().getResource(path);

getClass().getResource(path) uses the class loader to load the resource. Resources in the classpath can be loaded through this way. Suppose if you have a directory.

MyApplication
1. Class1.java
2. Class1.java
3. file.txt
For example to get the text file above you can access it as.

File file = new File(getClass().getResource("file.txt").toString());

Answer 2

May I just link you to a document where you can see how to read and write properties?, the code you can grab it from there:

http://www.drdobbs.com/jvm/readwrite-properties-files-in-java/231000005

Regards