Change Computer IP address using JAVA

In this video I have shown how you can change IP address using java project.
I have shown this using Eclipse IDE.

1. Project Structure in Eclipse IDE is shown below. Create a Java Project.

2. The first java class is my_main.java. It will internally execute the commands as shown in the video.
Please set your adapter name, ip address, subnet mask, default gateway, dns 1 and dns 2 in the code.

my_main.java

package com.jinujawad.com;
import java.io.PrintWriter;
public class my_main {
	public static void main(String[] args) {
		String adapter_name="Wi-fi";
		String ip_address="192.168.100.55";
		String subnet_mask="255.255.255.0";
		String default_gateway="192.168.100.1";
		String dns_1="8.8.8.8";
		String dns_2="8.8.4.4";
		String[] command =
	    {
	        "cmd",
	    };
	    Process p;
		try {
			p = Runtime.getRuntime().exec(command);
		        new Thread(new SyncPipe(p.getErrorStream(), System.err)).start();
	                new Thread(new SyncPipe(p.getInputStream(), System.out)).start();
	                PrintWriter stdin = new PrintWriter(p.getOutputStream());
	                stdin.println("netsh int ip set address "+adapter_name+" static "+ip_address+" "+subnet_mask+" "+default_gateway);
	                stdin.println("netsh int ip set dns "+adapter_name+" static "+dns_1+" primary");
	                stdin.println("netsh interface ip add dns "+adapter_name+" "+dns_2+" INDEX=2");
		                stdin.close();
	                p.waitFor();
	    	} catch (Exception e) {
	 		e.printStackTrace();
		}
	}	
}

package com.jinujawad.com;

import java.io.PrintWriter;

public class my_main {

public static void main(String[] args) {

String adapter_name="Wi-fi";

String ip_address="192.168.100.55";

String subnet_mask="255.255.255.0";

String default_gateway="192.168.100.1";

String dns_1="8.8.8.8";

String dns_2="8.8.4.4";

String[] command =

{

"cmd",

};

Process p;

try {

p = Runtime.getRuntime().exec(command);

new Thread(new SyncPipe(p.getErrorStream(), System.err)).start();

new Thread(new SyncPipe(p.getInputStream(), System.out)).start();

PrintWriter stdin = new PrintWriter(p.getOutputStream());

stdin.println("netsh int ip set address "+adapter_name+" static "+ip_address+" "+subnet_mask+" "+default_gateway);

stdin.println("netsh int ip set dns "+adapter_name+" static "+dns_1+" primary");

stdin.println("netsh interface ip add dns "+adapter_name+" "+dns_2+" INDEX=2");

stdin.close();

p.waitFor();

} catch (Exception e) {

e.printStackTrace();

}

3. my_main.java will call SyncPipe.java internally to show the output in console.
SyncPipe.java

package com.jinujawad.com;
import java.io.InputStream;
import java.io.OutputStream;
class SyncPipe implements Runnable
{
public SyncPipe(InputStream istrm, OutputStream ostrm) {
      istrm_ = istrm;
      ostrm_ = ostrm;
  }
  public void run() {
      try
      {
          final byte[] buffer = new byte[1024];
          for (int length = 0; (length = istrm_.read(buffer)) != -1; )
          {
              ostrm_.write(buffer, 0, length);
          }
      }
      catch (Exception e)
      {
          e.printStackTrace();
      }
  }
  private final OutputStream ostrm_;
  private final InputStream istrm_;
}

package com.jinujawad.com;

import java.io.InputStream;

import java.io.OutputStream;

class SyncPipe implements Runnable

{

public SyncPipe(InputStream istrm, OutputStream ostrm) {

istrm_ = istrm;

ostrm_ = ostrm;

}

public void run() {

try

{

final byte[] buffer = new byte[1024];

for (int length = 0; (length = istrm_.read(buffer)) != -1; )

{

ostrm_.write(buffer, 0, length);

}

catch (Exception e)

{

e.printStackTrace();

}

private final OutputStream ostrm_;

private final InputStream istrm_;

}

4. After executing the mymain.java in Administrator mode. The IP address would be changed as below shown.