[java] 判断两台机器之间网络是否可达

Java类库判断两台机器之间网络是否可达，常用ping方法来实现。

package com.iaiai.test;

import java.net.InetAddress;

/**
 * 
 * <br/>
 * Title: Test.java<br/>
 * Http: iaiai.iteye.com<br/>
 * Create time: 2013-1-29 11:19:55<br/>
 * <br/>
 * 
 * @author 丸子
 * @version 0.0.1
 */
public class Test {

  public static void main(String[] args) {
    String IP = "1.1.1.1";
    if (Test.ping(IP))
      System.out.println("SUCCESS - ping " + IP + " with no interface specified");
    else
      System.out.println("FAILURE - ping " + IP + " with no interface specified");
  }

  /**
   * 
   * @param host
   *            主机地址
   * @return boolean
   * */
  public static boolean ping(String host) {
    String $host = host;
    try {
      InetAddress address = null;
      if ($host != null && $host.trim().length() > 0) {
        address = InetAddress.getByName($host);
      }
      if (address != null) {
      } else {
        System.out.println($host + " is unrecongized");
      }
      if (address.isReachable(5000))
        return true;
    } catch (Exception e) {
      e.printStackTrace();
    }
    return false;
  }

}