如何使用Java获取在同一网络（子网）中连接的IP列表
如何使用Java获取连接到同一子网的设备的IP地址列表？
How do I get list of IP addresses for devices connected to my same subnet using Java?
这应该适用于网络上的主机对ICMP包（ping）（> JDK 5）作出反应：
this should work when the hosts on your network react to ICMP packages (ping) (>JDK 5):
public void checkHosts(String subnet){
int timeout=1000;
for (int i=1;i<255;i++){
String host=subnet + "." + i;
if (InetAddress.getByName(host).isReachable(timeout)){
System.out.println(host + " is reachable");
}
}
}
调用子网的方法（192.168.0.1-254）像这样：
invoke the method for a subnet (192.168.0.1-254) like this:
checkHosts("192.168.0");
没有测试它但应该有点像这样工作。显然这只检查ip地址的最后一个字节中的254个主机...
didnt test it but should work kinda like this. Obviously this only checks the 254 hosts in the last byte of the ip address...
检查：
http：// download -llnw.oracle.com/javase/6/docs/api/java/net/InetAddress.html#isReachable%28int%29
http://blog.taragana.com/index.php/ archive / how-to-do-icmp-ping-in-java-jdk-15-and-above /
希望有所帮助