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Why does int num = Integer.getInteger(“123”) throw NullPointerException?
...t do what you think it does
It returns null in this case
the assignment from Integer to int causes auto-unboxing
Since the Integer is null, NullPointerException is thrown
To parse (String) "123" to (int) 123, you can use e.g. int Integer.parseInt(String).
References
Java Language Guide/Au...
https URL with token parameter : how secure is it?
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Don't most browsers remove the referrer when going from HTTPS to HTTP?
– Kevin Mark
Dec 7 '10 at 0:06
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What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort
sort provides two kinds of numeric sort. This is from the man page:
3 Answers
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adb shell command to make Android package uninstall dialog appear
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You can do it from adb using this command:
adb shell am start -a android.intent.action.DELETE -d package:<your app package>
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How to programmatically click a button in WPF?
... />, the event will be caught by the on click handler as per normal. +1 from me!
– metao
Jun 3 '10 at 3:59
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Get push notification while App in foreground iOS
...to see notification on notification screen(screen shown when we swipe down from top of iOS device). But if application is in foreground the delegate method
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Check if a file exists with wildcard in shell script [duplicate]
...d it's turned on, a wildcard pattern that matches no files will be removed from the command line altogether. This will make ls see no pathname arguments, list the contents of the current directory and succeed, which is wrong. GNU stat, which always fails if given no arguments or an argument naming a...
How to declare an array in Python?
...t actually declare things, but this is how you create an array in Python:
from array import array
intarray = array('i')
For more info see the array module: http://docs.python.org/library/array.html
Now possible you don't want an array, but a list, but others have answered that already. :)
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What does the question mark in Java generics' type parameter mean?
This is a small snippet of code taken from some of the examples that accompany the Stanford Parser. I've been developing in Java for about 4 years, but have never had a very strong understanding of what this style of code is supposed to indicate.
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What's the point of map in Haskell, when there is fmap?
...t it just be what is currently known as fmap and fmap could be removed from the language?
3 Answers
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