CODEWITHSUNDEEP
javafilefile-exists
Jyo
Jyo

Reputation: 1

file.exists return false when folder is not empty

I am trying to access a file in remote shared location.

////hostname//data//upload//123//test.txt
File sourceFile=new File("////hostname//data//upload//123//test.txt");
sysout("sourceFile.exists()"+sourceFile.exists())//returning false

If a directory is empty file.exists() is returning true. I am using Java 1.6

I don't understand what is this weird behavior.

Upvotes: 0

Views: 787

Answers (3)

Partha
Partha

Reputation: 122

public static boolean fileTransfer(String src, String des) throws Exception {
    if (des == null || des.equals("") || src == null || src.equals("")) {
        return false;
    }
    File fileExisting = new File(src);
     File fileNew = new File(des+ fileExisting.getName());
    if (fileExisting.exists() && !fileExisting.isDirectory()) {
        if (fileExisting.renameTo(fileNew)) {
            System.out.println("File is moved successful!");
        } else {
            System.out.println("File is failed to move!");
        }

    }
    return fileNew.exists();
}

This is the code for file transfer as per your comment ,use src as sourcepath and des as destination path if you get a boolean false,that means path given is wrong.

Upvotes: 0

Partha
Partha

Reputation: 122

Check this example ,it checks the directory else creates a new one then your new file created.

File f = new File("D:/image_send");
    File file = new File("D:/image_send/" + date + ".txt");
    try {
        if(!f.isDirectory()){
        f.mkdirs();
        }
        file.createNewFile();
    } catch (IOException e) {
        e.printStackTrace();
    }
    System.out.println("File created Success");

Upvotes: 0

Glains
Glains

Reputation: 9

First of all to come back to Erwin´s suggestion, this is not the right attempt. The character \ is used in Java as an escape sequence, usually to print out reserved characters. For example will

String s = "The weather is really "nice" today";

result in an error, as " is already reserved for strings. The correct version would be

String s = "The weather is really \"nice\" today";

Coming back to the question, you have to know that when you create a file and test if it exists Java will validate the abstract pathname of the file. That said, if your abstact path is a directory and it exists true will be returned.

Edit:
If you intend to check if an abstract pathname is a directory try the following:

// Check if a file is a directory
if(file.isDirectory()) {

}

// Check if a file contains something
if(file.list().length > 0) {

}

Upvotes: 1

Related Questions