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corejava/corejava第8版/v2ch03/InetAddressTest/InetAddressTest.java
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2019-05-22 19:52:22 +08:00

34 lines
836 B
Java

import java.net.*;
/**
* This program demonstrates the InetAddress class. Supply a host name as command line argument, or
* run without command line arguments to see the address of the local host.
* @version 1.01 2001-06-26
* @author Cay Horstmann
*/
public class InetAddressTest
{
public static void main(String[] args)
{
try
{
if (args.length > 0)
{
String host = args[0];
InetAddress[] addresses = InetAddress.getAllByName(host);
for (InetAddress a : addresses)
System.out.println(a);
}
else
{
InetAddress localHostAddress = InetAddress.getLocalHost();
System.out.println(localHostAddress);
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
}