在java代碼證中獲取到本機IP地址和計算機名

import org.junit.Test;
import java.net.InetAddress;

@Test
public void test(){
                        InetAddress ia=null;
			try {    
				ia=ia.getLocalHost();

                                String localname=ia.getHostName();

                                  String localip=ia.getHostAddress();

                                System.out.println("本機名稱是："+ localname);
				  System.out.println("本機的ip是 ："+localip);
			} catch (Exception e) {
				e.printStackTrace();
			}
}