How to create a file , inclluding folders for a given path ?

Question

Hai friends,

Am downloading a ZipFile from web. where it contain folders and files. Uncompressing them using zipInputstream and zipentry . zipentry.getName giving name of file as "htm/css/aaa.htm".

so i am creating New File(zipentry.getName);

But problem it throwing an exception File not found. i got that it is creating subfolders htm and css. My question is that , how to create a file including its sub directories , by passing above path ?

Can anyone sort out this problem , please am thankful to you .

Thanking you, Sai Srinivas

Answer 1

Use this:

File targetFile = new File("foo/bar/phleem.css");
File parent = targetFile.getParentFile();
if(!parent.exists() && !parent.mkdirs()){
    throw new IllegalStateException("Couldn't create dir: " + parent);
}

While you can just do file.getParentFile().mkdirs() without checking the result, it's considered a best practice to check for the return value of the operation. Hence the check for an existing directory first and then the check for successful creation (if it didn't exist yet).

Reference:

• File.getParentFile()
• File.exists()
• File.mkdir()
• File.mkdirs()

Answer 2

You need to create subdirectories if necessary, as you loop through the entries in the zip file.

ZipFile zipFile = new ZipFile(myZipFile);
Enumeration e = zipFile.entries();
while(e.hasMoreElements()){
    ZipEntry entry = (ZipEntry)e.nextElement();
    File destinationFilePath = new File(entry.getName());
    destinationFilePath.getParentFile().mkdirs();
    if(!entry.isDirectory()){
        //code to uncompress the file 
    }
}