How to execute cmd commands via Java

Question

I am trying to execute command line arguments via Java. For example:

// Execute command
String command = \"cmd /c start cmd.exe\";
Process child = Runtime.ge         


        

Answer 1

Here is a simpler example that does not require multiple threads:

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class SimplePty
{
    public SimplePty(Process process) throws IOException
    {
        while (process.isAlive())
        {
            sync(process.getErrorStream(), System.err);
            sync(process.getInputStream(), System.out);
            sync(System.in, process.getOutputStream());
        }
    }
    
    private void sync(InputStream in, OutputStream out) throws IOException
    {
        while (in.available() > 0)
        {
            out.write(in.read());
            out.flush();
        }
    }
    
    public static void main( String[] args ) throws IOException
    {
        String os = System.getProperty("os.name").toLowerCase();
        String shell = os.contains("win") ? "cmd" : "bash";
        Process process = new ProcessBuilder(shell).start();
        new SimplePty(process);
    }
}