Trying to use wait() in java Process Builder

Using process builder in java but I want the program to wait while the process is finished.

I tried to use pb.wait() but it keeps on waiting. How do I wait till all the commands have finished executing?

This is a very small part of my code.

String[] commands = {All my commands go here};
                    String command = "cmd.exe /c " + String.join(" && ", commands);
                    ProcessBuilder pb = new ProcessBuilder(command.split(" "));
                    pb.inheritIO(); 
                    try {
                        pb.start();
                        try {
                            pb.wait();
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }
                    } catch (IOException e) {
                        System.out.println("Error, Could not run.");
                        e.printStackTrace();
                    }

                }