How to unzip files recursively in Java?

Question

I have zip file which contains some other zip files.

For example, the mail file is abc.zip and it contains xyz.zip, class1.java

Answer 1

One should CLOSE zip file after unzip.

static public void extractFolder(String zipFile) throws ZipException, IOException 
{
    System.out.println(zipFile);
    int BUFFER = 2048;
    File file = new File(zipFile);

    ZipFile zip = new ZipFile(file);
    try
    { 
       ...code from other answers ( ex. NeilMonday )...
    }
    finally
    {
        zip.close();
    }
}