java 验证ip是否可达

默认IP的设备已开放ping功能

代码

public class PingTest {
    public static void main(String[] args) throws Exception {
        String ip = "192.168.21.101";
        boolean reachable = InetAddress.getByName(ip).isReachable(3000);
        System.out.println(ip + (reachable ? " 可达" : " 不可达"));
    }
}