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How to check if a string contains only digits in Java [duplicate]
...cified in the question) matches a complete string, not fragments. In other words, it is not necessary to use ^\\d+$ (even though it is also correct). Please see the last negative test case.
Please note that if you use an online "regex checker" then this may behave differently. To match fragments of...
What is Lazy Loading?
...e loading of the object unit the point where we need it. Putting in simple words on demand object loading rather than loading the objects unnecessarily. For instance if you have a "Customer" class which has "Orders" object aggregated. So you like to load the customer data but the orders objects you ...
What is the actual use of Class.forName(“oracle.jdbc.driver.OracleDriver”) while connecting to a dat
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In other words, it allows you to use the Driver class without having an explicit import for your class. This allows you to build the project without having to have the Oracle driver in your classpath.
– JustinKS...
How do I choose between Tesseract and OpenCV? [closed]
...basic document segmentation and operate on specific image inputs (a single word, line, paragraph, page, limited dictionaries, etc.).
OpenCV, on the other hand, is a computer vision library that includes features that let you perform some feature extraction and data classification. You can create a s...
How to close TCP and UDP ports via windows command line
... active connection (socket) to the port my program is listening on?". The wording of the question is a bit off because a port number for the undesired inbound client connection is given and it was referred to as "port" but it's pretty clear that it was a reference to that one socket and not the lis...
Android error: Failed to install *.apk on device *: timeout
...ed the maximum cable length and making for unreliable operation. In other words, extension cables were forbidden so USB wouldn't be a crap-shoot. My (short) cable seems to work fine when I changed to a different USB port.
– Brian White
Sep 29 '14 at 3:38
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Authorative way to override onMeasure()?
... the parent class will just do something like you have done usually.
In a word, if you want some features your parent class offers free you should call super.onMeasure() (pass MeasureSpec.EXACTLY mode measure spec usually), otherwise call this.setMeasuredDimension(width, height); is enough.
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How do I get an ISO 8601 date on iOS?
...trings in ISO 8601 format might have milliseconds and might not.
In other words, both "2016-12-31T23:59:59.9999999" and "2016-12-01T00:00:00" are legit, but if you are using static-typed date formatter, one of them won't be parsed.
Starting from iOS 10 you should use ISO8601DateFormatter that hand...
Extract substring in Bash
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What if i want to extract the digit/word from last line of the file.
– A Sahra
Mar 16 '17 at 6:27
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How to use wait and notify in Java without IllegalMonitorStateException?
...r but you don't want to continue your code till you get answer or in other word get onResponse call. Here enters 'Synchronize helper':
public class SyncronizeObj {
public void doWait(long l){
synchronized(this){
try {
this.wait(l);
} catch(InterruptedException e) {
...