Java cd command going only foward throw folders, not back on input? -


beginner exam on building kind of file manager (console app only), i'm stuck on cd command, line of code, ideas? thanks

public void cd(string arr[]) {      file file = new file(currentfolder.getpath() + "\\" + arr[1]);     if (file.exists() && file.isdirectory())         currentfolder = file; }

i'm calling method in main class , works foward example, first command create fruit, there goes c:\\fruit, l create folder apple in folder fruit , l go apple folder cd command c:\\fruit\apple, l cant go if l put cd fruit c:\\fruit again? i'm calling cd , create commands switch in main method btw , works

part main code:

    boolean run = true;     scanner scan = new scanner(system.in);     application app = new application(); // application class cd method above      while (run) {         system.out.println("select command:");         system.out.println("create,  list,  info,  copy,  move,  rename,  cd,  delete,  exit");         system.out.println("path: " + app.getcurrentfolder().getpath());         string cmd = scan.nextline();         string arr[] = cmd.split(" ");         switch (arr[0].touppercase()) { ....

you can use file.getparent() or file.getparentfile() move hierarchy.

assume currentfile variable points c:/xxx.

with cd yyy currentfile should point c:/xxx/yyy

with cd .. this: currentfile = currentfile.getparentfile().


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