Java NetBeans 中的相对路径

Question

I am developing a NetBeans module where I have a Java package called test and another package called test.templates . I want to read a text file which is in the test.templates package from a Java file in the test package. I tried in several ways, but it gives a FileNotFoundException exception:

BufferedReader br = new BufferedReader(new FileReader("templates/test.txt"));
BufferedReader br = new BufferedReader(new FileReader("/test/templates/test.txt"));
BufferedReader br = new BufferedReader(new FileReader("src/test/templates/test.txt"));

But none of these worked.. I want to use the relative path, not the absolute path. What should I do?

Answer 1

You should note somethings about relative path (Netbeans):

+ File: Default is project folder, means outside of src folder.
If you save to test.txt , it will generate: project/test.txt .
If you save to data/test.txt , ... project/data/test.txt
So if you want to load file, you just do it conversely. Like this, you should put your files in project/data/filename.txt. Then when code, you get path: data/filename.txt .

+ ImageIcon: I will share later if can.
+ Image(SplashScreen): I will share later.

Answer 2

You will want to use getResource or getResourceAsStream .

Example on java2s.com:

http://www.java2s.com/Code/Java/Development-Class/Loadresourcefilerelativetotheclasslocation.htm

Answer 3

getResource() returns a URL, so to extract the filename, you can try calling getFile() .

The filepath you pass to getResource will be based on your netbeans package. Use a leading slash to denote the root of the classpath.

Example:

getResource(/db_files/table.csv).getFile()

Answer 4

try
{
BufferedReader br = new BufferedReader(new FileReader(getClass().getResource("/test/templates/test.txt").toString().substring(6)));
}
catch(Exception ee)
{
JOptionPane.showMessageDialog(this, ee);   
}