如何才能获得我的计算机的外部IP,仅使用Java,而不与以下任何网站联系:
String ip = "";
try
{
URL whatismyip;
whatismyip = new URL("http://checkip.amazonaws.com");
BufferedReader in = null;
in = new BufferedReader(new InputStreamReader(whatismyip.openStream()));
i
我在初始化h2o时遇到此错误
h2o.init() H2O尚未运行,正在启动...
Error in .h2o.startJar(ip = ip, port = port, name = name, nthreads = nthreads, :
Your java is not supported: java version "1.7.0_80"
Please download the latest Java SE JDK from the following URL:
https://www.oracle.com/technetwork/java/javase/dow
我正在尝试从正在运行的服务器上获取主机名。
Java代码:
import java.net.InetAddress;
System.out.println("Host Name: " + InetAddress.getLocalHost().getHostName());
System.exit(0);
输出:
java.net.UnknownHostException: ThinkPad-Edge-E430: ThinkPad-Edge-E430: Name or service not known
at java.net.InetAddress.getLocalHost(
我试图使用这个CKJM工具来分析一些文件,我查看了说明等,让它以某种方式工作,而这是另一个问题,它说我的类不是java文件,这是不正确的。如何消除此错误并实际扫描java类?
Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.
C:\Windows\system32>java -jar C:\Users\Radostin\Downloads\ckjm_ext.jar C:\Users\
Radostin\Downloads\ServerGame.class
E
我在kubernetes中运行了hadoop集群,包含4个日志节点和2个namenodes。有时,我的数据不能注册到namenodes。
17/06/08 07:45:32 INFO datanode.DataNode: Block pool BP-541956668-10.100.81.42-1496827795971 (Datanode Uuid null) service to hadoop-namenode-0.myhadoopcluster/10.100.81.42:8020 beginning handshake with NN
17/06/08 07:45:32 ERROR da