import java.io.IOException;
import java.net.InetAddress;

public class InetAddressDemo {
    public static void main(String[] args) throws IOException {
        InetAddress locAdd = null;  //声明InetAddress对象
        InetAddress remAdd = null;  //声明InetAddress对象
        locAdd = InetAddress.getLocalHost();    //得到本地InetAddress对象
        remAdd = InetAddress.getByName("www.baidu.com");    //得到远程InetAddress对象
        InetAddress remAdd2 = InetAddress.getByName("192.168.121.200");
        System.out.println("本机IP地址："+locAdd.getHostAddress());  //得到本地IP地址
        System.out.println("百度的IP地址"+remAdd.getHostAddress());  //得到远程IP地址
        System.out.println("本机是否可达"+remAdd.isReachable(5000));
        System.out.println("是否可达远程主机"+remAdd2.isReachable(5000));
    }
}