How to check if the folder exists in subfolder of same level in java?

Question

I have folder structure as below and I need to check and copy files from AB1 folder to CD1 folder.

Root Folder
|___AB ------------------------>DD
    |__AB1 and AB2(folders)      |_AB1 and AB2
        |_CD1                       |__CD1 |__CD2

But it is checking for CD1 in both AB1 and AB2 folders and files are not generating.

File file = new File("workspace");
List<File> abFolders = getDir(file); //level 1 folders
abFolders = new ArrayList<File>(abFolders);
List<File> cdFolders = getSubdirs(abFolders); //level 2 folders

//print
for (File file1 : abFolders) {
    for(File file2:cdFolders){
     //Here I need to check if CD folder is present in AB1 then it has to copy to CD1 and not to check for another CD1 folder in AB2 folder.
         System.out.println(file1.getName());
         System.out.println(file2.getName());
    }
    
}

private static List<File> getDir(File file) {
    List<File> subdirs = Arrays.asList(file.listFiles(new FileFilter() {
        public boolean accept(File f) {
            return f.isDirectory();
        }
    }));
    return subdirs;
}
static List<File> getSubdirs(List<File> subdirs) {
    List<File> deepSubdirs = new ArrayList<File>();
    for(File subdir : subdirs) {
        deepSubdirs.addAll(getDir(subdir)); 
    }
    //subdirs.addAll(deepSubdirs);
    return deepSubdirs;
}

So you want to transfer, all neighbor folders of CD1, inside CD1? — LoukasPap
– LoukasPap, Commented Aug 13, 2020 at 8:22
Now it is selecting the folders like first AB2 and checking for CD1 and if it is not present code stops there....and it wasn't checking for AB1 of CD1 folder — Yadi
– Yadi, Commented Aug 13, 2020 at 8:24

LoukasPap · Accepted Answer · 2020-08-13 10:05:48Z

3

Use collections, so that you sort abFolders and cdFolders. First import the library:

import java.util.Collections;

Then do the sort of AB folders, before entering loop.

Collections.sort(abFolders);
for (File file1 : abFolders) {
    for(File file2:cdFolders){
     //Here I need to check if CD folder is present in AB1 then it has to copy to CD1 and not to check for another CD1 folder in AB2 folder.
         System.out.println(file1.getName());
         System.out.println(file2.getName());
    }
    
}

answered Aug 13, 2020 at 10:05

LoukasPap

1,3481 gold badge11 silver badges22 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

LoukasPap Over a year ago

Ok I will check it. But why dont you ask a new question for that problem? That way, more people (and maybe more experts) will be able to answer.

Yadi Over a year ago

i was not able to add the question it is saying like ....you were not able to ask the question for longer time'

LoukasPap Over a year ago

I know, I will check it

Collectives™ on Stack Overflow

How to check if the folder exists in subfolder of same level in java?

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related