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Can an int be null in Java?
...areful when unboxing null Integers since this can cause a lot of confusion and head scratching!
e.g. this:
int a = object.getA(); // getA returns a null Integer
will give you a NullPointerException, despite object not being null!
To follow up on your question, if you want to indicate the absen...
Convert a JSON String to a HashMap
I'm using Java, and I have a String which is JSON:
18 Answers
18
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WebException how to get whole response with a body?
...hould go. i know for this case it's obvious to the attention-paying reader and @iwtu, but Fully comprehensive answers can make the real difference to the beginners reading this answer;)
– Jeroen
Nov 18 '16 at 12:18
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iOS detect if user is on an iPad
I have an app that runs on the iPhone and iPod Touch, it can run on the Retina iPad and everything but there needs to be one adjustment. I need to detect if the current device is an iPad. What code can I use to detect if the user is using an iPad in my UIViewController and then change something ac...
JavaScript: client-side vs. server-side validation
...k to the average user. For example, if they enter an invalid email address and move to the next field, you can show an error message immediately. That way the user can correct every field before they submit the form.
If you only validate on the server, they have to submit the form, get an error mes...
Difference between wait() and sleep()
What is the difference between a wait() and sleep() in Threads?
33 Answers
33
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Send inline image in email
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This code doesn't work, use the below code from @T30, and keep in mind when you add Alternate View to MailMessage that view will be the body of your email and you DONT need to fill the Body property.
– Eric
Oct 8 '15 at 23:33
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ReSharper Abbreviations List: Where can I modify it?
I am using ReSharper 4.5, and what often happens when I am converting explicit properties into auto-properties, is that I will accidentally chose "Add XX to abbreviations list".
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Reload an iframe with jQuery
I have two iframes on a page and one makes changes to the other but the other iframe doesn't show the change until I refresh. Is there an easy way to refresh this iframe with jQuery?
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How can I use a search engine to search for special characters? [closed]
...t work on either ie or firefox. I have tried searching for sample examples and custom ones, search did not return any results.
– minerals
Sep 1 '14 at 13:47
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