以下实例演示了如何使用 InetAddress 类的 InetAddress.getByName() 方法来获取指定主机（网址）的IP地址：
import java.net.InetAddress;
import java.net.UnknownHostException;
public class GetIP {
public static void main(String[] args) {
InetAddress address = null;
try {
address = InetAddress.getByName("www.dida100.com");
}
catch (UnknownHostException e) {
System.exit(2);
}
System.out.println(address.getHostName() + "=" + address.getHostAddress());
System.exit(0);
}
}以上代码运行输出结果为：
www.dida100.com=222.73.134.120