如何从 java 中的源根目录获取文件的路径？

Question

I have a file in java under the src folder, I want to get its path at runtime relative to the source folder. For example-

myProject
  -- src
    -- packageOne
      -- SomeFile.java

I would like to have the result packageOne/SomeFile.java . I couldn't find a way, I tried getPath() , getAbsoultePath() and every similar method.

Answer 1

You want to construct a relative path. AFAIK there is no ready function to use.

Given that you have one of the ancestor nodes (src) and you have SomeFile.java, the following code might work but I did not try...

File src = new File("...");
File somefile = new File("...");

String relpath = somefile.getName();
File cursor = somefile.getParentFile();
while (!cursor.getAbsolutePath().equals(src.getAbsolutePath()) {
  somefile = cursor.getName() + File.pathSeparator + somefile;
}
System.out.println("relative path: "+relpath);