How can I print an alternate even number in Java like 2, 6, 10, 14, etc.?
I am a Java learn. I'm in starting phase. Can someone please tell me the logic or the concept behind it. Please!
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AWS : GET Request from app on ElasticBeanstalk failed with Network is Unreachable
We are currently facing strange behavior of our application hosted on Elastic Beanstalk and would like to pick your brains. Appreciate in advance.
One day on middle of December 2017, we made a small change on our code base and deployed on Elastic Beanstalk. Then, all the sudden our application start getting error while making a HTTP(S) GET (REST GET) request to any resources, (e.g., against facebook graph api or even google.com or yahoo.com) which is "Network is Unreachable"
Here's what we have doubted and tried so far. - Any GET request fails? We tried several endpoints or web page, and it seems yes.
POST request? Any POST is working fine.
HTTPS is failing? Also HTTP GET call is failing.
Application bug? From our local PC, our application can make a GET call and get result without any problems to the same endpoint which production is trying to reach.
Server setting? Login to the server by eb ssh and made cURL call to the same endpoints, it worked perfectly.
This Elastic Beanstalk environment specific error? We set up a new environment from scratch on Elastic Beanstalk and deployed same application, and got same error. (Network is unreachable for GET call)
So, it's like this. Does somebody come up with possible cause of this problem? We have now really no clue any more...
Here I leave some info of our environment and application. Since we are relatively new to AWS, it would be really helpful to tell us if we miss to list up necessary further more information to detect the problem.
Application Language : Java 1.8 Framework: Spring-boot v1.5.6 + embeded Tomcat (using RestTemplate to make a call)
Elastic Beanstalk Region : Frankfurt Environment tier: Web Server Platform: 64bit Amazon Linux 2017.03 v2.5.1 running Java 8 Really appreciate in advance!!
Java - driver.findElement #2
I have this button:
<div class="container"> <div class="alert alert-danger"> <strong>Pozor!</strong> Je třeba aktualizovat formulář kvůli změnám hodnot v personálním formuláři. <a href="#" id="newVehicles_reCompPersonnelInput" class="btn btn-xs btn-danger pull-right reCompPersonnelInput">Přepočítat</a> </div> </div>
There is no problem to find it with
WebElement prepocitat = driver.findElement(By.id("newVehicles_reCompPersonnelInput"));
But the button is present in certain situations only. How can I avoid NoSuchElementException?
Where should code for key bindings go?
This is more of a theoretical question. I am implementing key bindings to a panel. I have a panel class that is called from another main class. Should the key bindings code be in the panel class or in the main class that adds the panel to the frame?
Thanks in advance.