Question

I want to check whether any Zip file is present on a specified path. If present then I want to extract that file on the same path.

How to check if any Zip file is present on a given path?

Answer 1

You can try this code which checks the extension of the file inside the directory and prints the filename if Zip file is present.

 public static void main(String[] args) 
{

  // Directory path here
  String path = "."; 

  String files;
  File folder = new File(path);
  File[] listOfFiles = folder.listFiles(); 

  for (int i = 0; i < listOfFiles.length; i++) 
  {

   if (listOfFiles[i].isFile()) 
   {
   files = listOfFiles[i].getName();
       if (files.endsWith(".rar") || files.endsWith(".zip"))
       {
          System.out.println(files);
        }
     }
  }
}

Instead of that If you want to use FilenameFilter as told by Andrew Thompson.

You can implement FilenameFilter in your class.
More help is given on this link.
By this you dont need to check the extension of file .
It will give you only those files which extension is being passed as a parameter.

To extract the zip file if found you can take help of the ZipInputStream package .
You can have a look here to extract the folder.