How to open any File in Java

In this video, I have shown how you can open any type of file using java.
Code is shown below.

package test;
import java.io.File;
public class open_file {
  public static void main(String[] args) {
    String path = "E:\\jinu.txt";
    File file = new File(path);
    try {
      if (file.exists()) {
        Process pro = Runtime.getRuntime().exec("rundll32 url.dll,FileProtocolHandler " + path);
        pro.waitFor();
      } else {
        System.out.println("file does not exist");
      }
    } catch (Exception e) {
      System.out.println(e);
    }
  }
}