在Java中剪切变量路径

Question

For example I have this Path:

C:\Program Files\7-Zip\7z.exe

Now I only want the Path but not the .exe like this:

C:\Program Files\7-Zip

How can I cut the last part out in dynamic paths with more or less directories or longer names at the end?

I tried playing around with indexOf() and subString() but I don't really get it to work.

Answer 1

try using Java's path API:

Path file = Paths.get("C:\\Program Files\\7-Zip\\7z.exe");
Path dir = file.getParent();
System.out.println(dir.toString());

https://docs.oracle.com/javase/7/docs/api/java/nio/file/Path.html

Answer 2

Use something like this:

String path = "C:\\Program Files\\7-Zip\\7z.exe";
    String[] a = path.split(Pattern.quote(""));
    String newpath = "";
    for(int i = a.length-1; i > 0; i--) {
        if(a[i].compareTo("\\") != 0) {
            a[i] = "";

        } else {
            break;
        }
    }
    for(int i = 0; i < a.length; i++) {
        if(a[i].compareTo("") != 0) {
            newpath += a[i];
        }
    }
    System.out.println(newpath);