java中如何检测一个网络地址后的IP地址是否可连通

实现思路:
   使用InetAddress.getByName(host).isReachable(timeout) 方法即可检测指定host是否通

package com.java265.other;
import java.net.InetAddress;
public class Test11 {
	/**
	 * java265.com 示例演示
	 */
	public static void main(String[] args) throws Exception {
		checkHosts("192.168.9");
	}

	public static void checkHosts(String subnet) throws Exception {
		int timeout = 1000;
		for (int i = 1; i < 255; i++) {
			String host = subnet + "." + i;
			if (InetAddress.getByName(host).isReachable(timeout)) {
				System.out.println(host + " 可连接通！");
			}
		}
	}
}