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Why do == comparisons with Integer.valueOf(String) give different results for 127 and 128?
...returning an Integer object, which may have its values cached between -128 and 127. This is why the first value returns true - it's cached - and the second value returns false - 128 isn't a cached value, so you're getting two separate Integer instances.
It is important to note that you are compari...
How to securely save username/password (local)?
...hich you need to log into first.
The account details consist of username and password, and they need to be saved locally.
It's just a matter of security, so other people using the same computer can't see everyone's personal data.
What is the best/most secure way to save this data?
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How to add a browser tab icon (favicon) for a website?
I've been working on a website and I'd like to add a small icon to the browser tab.
13 Answers
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How to configure an app to run correctly on a machine with a high DPI setting (e.g. 150%)?
...g of your UI. It does so by having your app render its output to a bitmap and drawing that bitmap to the screen. The rescaling of that bitmap makes the text inevitably look fuzzy. A feature called "DPI virtualization", it keeps old programs usable on high resolution monitors.
You have to explici...
How do I set up DNS for an apex domain (no www) pointing to a Heroku app?
I already added a custom domain to my Heroku app and it works with www.domain.com .
4 Answers
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Why can I pass 1 as a short, but not the int variable i?
Why does the first and second Write work but not the last? Is there a way I can allow all 3 of them and detect if it was 1, (int)1 or i passed in? And really why is one allowed but the last? The second being allowed but not the last really blows my mind.
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javascript: recursive anonymous function?
...ive the function a name, even when you're creating the function as a value and not a "function declaration" statement. In other words:
(function foo() { foo(); })();
is a stack-blowing recursive function. Now, that said, you probably don't may not want to do this in general because there are som...
How to show Page Loading div until the page has finished loading?
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I've needed this and after some research I came up with this (jQuery needed):
First, right after the <body> tag add this:
<div id="loading">
<img id="loading-image" src="images/ajax-loader.gif" alt="Loading..." />
</d...
Changing the resolution of a VNC session in linux [closed]
...eas if I set it to run at 1600x1200 it doesn't fit on the laptop's screen, and I have to scroll it all the time.
15 Answers...
How to hide command output in Bash
...gant for the end user. How do I hide the output when Bash is executing commands?
7 Answers
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