Using Java for interacting with command line
I'm trying to create a Java program that is a front-end for iptables.  To accomplish this, I'm using Java's Process class and pass commands.

I'm wondering if I'm going about it correctly in general.  For example, here is a selection of commands that resets iptables to its default settings, which are meant to be executed in a terminal sequentially. Am I using the Process class correctly here?

    Process proc1 = Runtime.getRuntime().exec("iptables -P INPUT ACCEPT");
    proc1.waitFor();
    Process proc2 = Runtime.getRuntime().exec("iptables -P FORWARD ACCEPT");
    proc2.waitFor();
    Process proc3 = Runtime.getRuntime().exec("iptables -P OUTPUT ACCEPT");
    proc3.waitFor();
    Process proc4 = Runtime.getRuntime().exec("iptables -t nat -P PREROUTING ACCEPT");
    proc4.waitFor();

Thanks for any direction!
Using Java for interacting with command line
===

I'm trying to create a Java program that is a front-end for iptables.  To accomplish this, I'm using Java's Process class and pass commands.

I'm wondering if I'm going about it correctly in general.  For example, here is a selection of commands that resets iptables to its default settings, which are meant to be executed in a terminal sequentially. Am I using the Process class correctly here?

    Process proc1 = Runtime.getRuntime().exec("iptables -P INPUT ACCEPT");
    proc1.waitFor();
    Process proc2 = Runtime.getRuntime().exec("iptables -P FORWARD ACCEPT");
    proc2.waitFor();
    Process proc3 = Runtime.getRuntime().exec("iptables -P OUTPUT ACCEPT");
    proc3.waitFor();
    Process proc4 = Runtime.getRuntime().exec("iptables -t nat -P PREROUTING ACCEPT");
    proc4.waitFor();

Thanks for any direction!