List files and files of subdirectories from a given folder

Question

I try to list all the files from a folder and its subdirectories to be uploaded one by one. It couldn't list files from subfolders of folder, just uses files from same folder multiple times.

 int num=1; public void listFilesAndFilesSubDirectories(String directoryName) throws InterruptedException { File directory = new File(directoryName); File[] fList = directory.listFiles(); Arrays.sort(fList); String filestatus; for (File file : fList){ if (file.isFile() && !(file.getName().contains("nfo"))){ int index = file.getName().lastIndexOf("_"); if(index <= 0){ filestatus="INVALID"; }else{ filestatus = file.getName().substring(0, index); } } else if (file.isDirectory()){ listFilesAndFilesSubDirectories(file.getParent()); } num++; } }

Shouldn't this line be: listFilesAndFilesSubDirectories(file.getPath()); ? — jbx
– jbx, Commented Oct 10, 2018 at 11:42
If the file is directory you should call recursively on that object not on its parent. — Mladen Savić
– Mladen Savić, Commented Oct 10, 2018 at 11:42

Elias N · Accepted Answer · 2018-10-10 11:45:51Z

Replace:

listFilesAndFilesSubDirectories(file.getParent());

with:

listFilesAndFilesSubDirectories(file.getAbsolutePath());

kizawa tomaru · Accepted Answer · 2018-10-10 12:00:32Z

You can also use the "Tree" :

private DefaultMutableTreeNode listFile(File file, DefaultMutableTreeNode node){ int count = 0; if(file.isFile()) return new DefaultMutableTreeNode(file.getName()); else{ File[] list = file.listFiles(); if(list == null) return new DefaultMutableTreeNode(file.getName()); for(File nom : list){ count++; //not more than 5 childs node if(count < 5){ DefaultMutableTreeNode subNode; if(nom.isDirectory()){ subNode = new DefaultMutableTreeNode(nom.getName()+"\\"); node.add(this.listFile(nom, subNode)); }else{ subNode = new DefaultMutableTreeNode(nom.getName()); } node.add(subNode); } } return node; }

}

see more here The doc is in french but you may find what you need.

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