java怎么判断某个域名是否能够被成功解析成IP地址

Java可以使用InetAddress类来判断某个域名是否能够被成功解析成IP地址。使用InetAddress类的getByName()方法，将域名作为参数传入，如果返回的InetAddress对象不为null，则说明该域名能够被成功解析成IP地址。示例代码如下：

import java.net.InetAddress;

public class CheckDomain {

    public static void main(String[] args) {
        String domain = "www.baidu.com";
        try {
            InetAddress address = InetAddress.getByName(domain);
            if (address != null) {
                System.out.println(domain + " can be resolved to IP address: " + address.getHostAddress());
            } else {
                System.out.println(domain + " cannot be resolved to IP address.");
            }
        } catch (Exception e) {
            System.out.println(domain + " cannot be resolved to IP address.");
        }
    }

}