Sometimes we want to open a process & want to close that process only without effecting others using Java.
​Below is one way where notepad is opened & only that notepad is closed without effecting others.

​import java.awt.Desktop;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
/**
 * Below sample shows a way to open a Notepad,
 * Add contents through Java or even you can add contents manually.
 * But if you add contents manually then you have to save the file by yourself, else you will loose the contents
 * once notepad is closed by the program. Currently, you will not get any warning even.
 * Below code will close that notepad only which it opens, other applications will remain open.
 * @author nitin
 *
 */
public class Notepads {
 public static void main(String[] args) {
  Desktop d=Desktop.getDesktop();
  try {
   // d.open(new File("d:\\test.txt"));
   String name = "d:\\test.txt";
   String message = "Hello World!" + System.lineSeparator();
   File f = new File(name);
   if(!f.exists())
    f.createNewFile();
   Files.write(Paths.get(name), message.getBytes(), StandardOpenOption.APPEND);
   Process pr = Runtime.getRuntime().exec("notepad " + name);
   Thread.sleep(5000);
   // Below line will cause all the notepad instances to be closed.
   // Runtime.getRuntime().exec("taskkill /IM notepad.exe");
   pr.destroy();
  } catch (IOException e) {
   e.printStackTrace();
  } catch (InterruptedException e) {
   e.printStackTrace();
  }
 }