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How to check if a string contains only digits in Java [duplicate]
...r
String regex = "\\d+";
As per Java regular expressions, the + means "one or more times" and \d means "a digit".
Note: the "double backslash" is an escape sequence to get a single backslash - therefore, \\d in a java String gives you the actual result: \d
References:
Java Regular Expression...
How can I get stock quotes using Google Finance API?
...developer API for this.
Getting stock quotes is a little harder. I found one article where someone got stock quotes using Google Spreadsheets.
You can also use the gadgets but I guess that's not what you're after.
The API you mention is interesting but doesn't seem to be documented (as far as I'...
How do I copy items from list to list without foreach?
How do I transfer the items contained in one List to another in C# without using foreach ?
8 Answers
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Android – Listen For Incoming SMS Messages
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use Intents.SMS_RECEIVED_ACTION instead of the hard-coded one.
– Ahmad Kayyali
Dec 3 '13 at 7:13
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Autoincrement VersionCode with gradle extra properties
... file
I am sure that there are any number of possible solutions; here is one:
android {
compileSdkVersion 18
buildToolsVersion "18.1.0"
def versionPropsFile = file('version.properties')
if (versionPropsFile.canRead()) {
def Properties versionProps = new Properties()
...
What's the difference between BaseAdapter and ArrayAdapter?
... on how you implement them or change their behavior. At their core, either one can be just as effective (especially considering that an ArrayAdapter is a BaseAdapter).
You can do pretty much whatever you want with any adapter, but keep in mind that BaseAdapter is abstract, so you can't use it direc...
How can I get the DateTime for the start of the week?
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This would be off by one day for me sometimes. It worked for me once I stripped the time component from dt. I used int diff = dt.Date.DayOfWeek - startOfWeek;
– Vincent Saelzler
May 26 '17 at 17:43
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What Computer Science concepts should I know? [closed]
...by Steve Yegge (formerly of Amazon, now at Google):
The Five Essential Phone Screen Questions
It goes into some detail about the the five most important concepts that developers should be required to know:
Basic programming (including recursion, file I/O, formatted output, loops etc)
Object or...
What's the difference between a file descriptor and file pointer?
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One is buffered (FILE *) and the other is not. In practice, you want to use FILE * almost always when you are reading from a 'real' file (ie. on the drive), unless you know what you are doing or unless your file is actually a...
HTTPS with Visual Studio's built-in ASP.NET Development Server
... the applicationhost.config in the /.vs/config/ folder of the solution. Anyone know the secret to make this work?
– MC9000
Aug 24 '17 at 19:22
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