ubuntu - Configure file /etc/network/interface with java -


i need configure network interface on ubuntu. code

    /*      * change template, choose tools | templates      * , open template in editor.      */     package epsetupserv.network;      import epsetupapi.entity.networkentity;     import epsetupserv.config.generalconfigurator;     import epsetupserv.lib.fileoperation;     import epsetupserv.lib.shellaccess;     import java.util.arraylist;     import java.util.list;      /**      *      * @author nununeh      */     public class networkconfigurator {          private static string realpath = "/etc/network/";         private static string realfile = "interface";          public static list<networkentity> getrealnetworkinterface() {             list<networkentity> list = new arraylist<networkentity>();              int eth0_loc = fileoperation.findstringline(realpath, realfile, "auto eth0");             int eth1_loc = fileoperation.findstringline(realpath, realfile, "auto eth1");             int tline = fileoperation.countline(realpath, realpath);              generalconfigurator gn = new generalconfigurator(realpath, realfile);             gn.setdelimiter(" ");              networkentity n1 = new networkentity();             n1.setaddress(gn.getproperty("address", eth0_loc, eth1_loc));             n1.setnetmask(gn.getproperty("netmask", eth0_loc, eth1_loc));             n1.setnetwork(gn.getproperty("network", eth0_loc, eth1_loc));             n1.setbroadcast(gn.getproperty("broadcast", eth0_loc, eth1_loc));             list.add(n1);              networkentity n2 = new networkentity();             n2.setaddress(gn.getproperty("address", eth1_loc, tline));             n2.setnetmask(gn.getproperty("netmask", eth1_loc, tline));             n2.setnetwork(gn.getproperty("network", eth1_loc, tline));             n2.setbroadcast(gn.getproperty("broadcast", eth1_loc, tline));             list.add(n2);              return list;         }           public static void setrealnetworkinterface(networkentity n1, networkentity n2) {             int tline = fileoperation.countline(realpath, realfile);             fileoperation.clearbyline(realpath, realfile, 1, tline);             fileoperation.insertnewline(realpath, realfile, ""                     + "# generated epanel\\nn"                     + "auto lo\n"                     + "iface lo inet loopback\n"                     + "\n"                     + "auto eth0\n"                     + "iface eth0 inet static\n"                     + " address " + n1.getaddress() + "\n"                     + " netmask " + n1.getnetmask() + "\n"                     + " network " + n1.getnetwork() + "\n"                     + " broadcast " + n1.getbroadcast() + "\n"                     + "\n"                     + "auto eth1\n"                     + "iface eth1 inet static\n"                     + " address " + n2.getaddress() + "\n"                     + " netmask " + n2.getnetmask() + "\n"                     + " network " + n2.getnetwork() + "\n"                     + " broadcast " + n2.getbroadcast() + "\n");         }     }

the problem when use class, cannot change 1 one property. if want change address eth1, have change of them 1 proccess run (all property below eth0 , eth1). have alternative code?


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