Java Program to open Folder

import java.io.*;
import java.util.*;
public class OpenFolder{
    Scanner scan=new Scanner(System.in);
    String folderPath, defaultPath;
        public void folderPath(){
        try{
            defaultPath=System.getProperty("user.home")+"\\";
            System.out.printf("Folder Path: "+defaultPath);
            folderPath=scan.nextLine();
            scan.remove();
            folderPath=defaultPath.concat(folderPath);
        File check=new File(folderPath);
        if(!check.exists()){
            System.err.println("Invalid Path!\n"+folderPath);
            folderPath();
            }
        }
        catch(InputMismatchException e){
            System.err.println("Error Occured!\n"+e.getMessage());
            System.exit(0);
        }
    }
public void openFolder(){
    try{
    Process process=Runtime.getRuntime().exec("explorer.exe "+folderPath);
    }
    catch(IOException e){
        System.err.println("Error Occured!\n"+e.getMessage());
        System.exit(0);
            }
   }
public static void main(String[] args){
    OpenFolder obj=new OpenFolder();
    obj.folderPath();
    obj.openFolder();
}
}