Threadz.java

public void twoDL() //current
{
  ProcessBuilder DL = new ProcessBuilder("//commands").inheritIO();
  Process downloading1 = DL.start();
  downloading1.waitFor(); 
  
  ProcessBuilder DL = new ProcessBuilder("//other commands").inheritIO();
  Process downloading2 = DL.start();
  downloading2.waitFor();
}

public void twoDL2() //is this faster?
{
  ProcessBuilder DL = new ProcessBuilder("//commands").inheritIO();
  Process downloading1 = DL.start();
  DL = new ProcessBuilder("other //commands").inheritIO();
  Process downloading2 = DL.start();
  downloading1.waitFor(); 
  downloading2.waitFor();
}