C:\temp
C:\temp1

C:\temp\test.txt
C:\temp\test.txt
C:\temp\TEST.TXT
C:\temp\.\test.txt
C:\temp1\..\temp\test.txt

import java.io.File;

public class PathDemo {
    public static void main(String args[]) {
        System.out.println("Path of the given file :");
        File child = new File(".././Java.txt");
        displayPath(child);
        File parent = child.getParentFile();
        System.out.println("Path of the parent folder :");
        displayPath(parent);


        File anotherFile = new File("a.txt");
        System.out.println("Path of another file(a.txt)");
        displayPath(anotherFile);

        File anotherAbsFile = new File("/tmp/a.txt");
        System.out.println("Path of another file(/tmp/a.txt)");
        displayPath(anotherAbsFile);
    }


    public static void displayPath(File testFile) {
        System.out.println("path : " + testFile.getPath());
        System.out.println("absolute path : " + testFile.getAbsolutePath());
        try {
            System.out.println("canonical path : " + testFile.getCanonicalPath());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

Path of the given file :
path : .././Java.txt
absolute path : /Users/androidyue/Documents/projects/PathSamples/.././Java.txt
canonical path : /Users/androidyue/Documents/projects/Java.txt
Path of the parent folder :
path : ../.
absolute path : /Users/androidyue/Documents/projects/PathSamples/../.
canonical path : /Users/androidyue/Documents/projects
Path of another file(a.txt)
path : a.txt
absolute path : /Users/androidyue/Documents/projects/PathSamples/a.txt
canonical path : /Users/androidyue/Documents/projects/PathSamples/a.txt
Path of another file(/tmp/a.txt)
path : /tmp/a.txt
absolute path : /tmp/a.txt
canonical path : /private/tmp/a.txt

Process finished with exit code 0