Import shapefile to PostgreSQL using Java

Question

I have to import a shapefile to PostgreSQL via a Java application. There are few codes that I've found and the code I've tried:

package shptodb;

import java.io.BufferedReader;

import java.io.IOException;
import java.io.InputStreamReader;

public class processbuilder {
    public static void main( String[] args) {
         ProcessBuilder pb= new ProcessBuilder();
         pb.command("cmd.exe", "shp2pgsql  -s 4326 C:\\Geodata\\Provinces.shp provinces | psql -U postgres -h localhost -p 5433 -d DB"
                    );
        try {

                Process process = pb.start();

                StringBuilder output = new StringBuilder();

                BufferedReader reader = new BufferedReader(
                        new InputStreamReader(process.getInputStream()));

                String line;
                while ((line = reader.readLine()) != null) {
                    output.append(line + "\n");
                }

                int exitVal = process.waitFor();
                if (exitVal == 0) {
                    System.out.println("Success!");
                    System.out.println(output);
                    System.exit(0);
                } else {
                }

            } catch (IOException e) {
                e.printStackTrace();
            } catch (InterruptedException e) {
                e.printStackTrace();
            } 
    }

I don't get any errors, so I don't know what's wrong with my code.