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calling non-static method in static method in Java [duplicate]
...probably dedicated to utility-like methods that could be static.
However, Java doesn't allow the implementation of an interface-defined method to be static. So when you (naturally) try to make the method static, you get the "cannot-hide-the-instance-method" error. (The Java Language Specification m...
Java - Convert integer to string [duplicate]
...st. (See String source in JDK at grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/… .)
– ingyhere
Nov 16 '13 at 13:36
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What is difference between Collection.stream().forEach() and Collection.forEach()?
...on specified in Stream.forEach is required to be non-interfering. (See the java.util.stream package doc.) Iterable.forEach potentially has fewer restrictions. For the collections in java.util, Iterable.forEach will generally use that collection's Iterator, most of which are designed to be fail-fast ...
Why does String.valueOf(null) throw a NullPointerException?
...Of method is overloaded:
String.valueOf(Object)
String.valueOf(char[])
Java Specification Language mandates that in these kind of cases, the most specific overload is chosen:
JLS 15.12.2.5 Choosing the Most Specific Method
If more than one member method is both accessible and applicable to...
How can I ask the Selenium-WebDriver to wait for few seconds in Java?
I'm working on a Java Selenium-WebDriver. I added
15 Answers
15
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Java URL encoding of query string parameters
... + URLEncoder.encode(q, StandardCharsets.UTF_8);
When you're still not on Java 10 or newer, then use StandardCharsets.UTF_8.toString() as charset argument, or when you're still not on Java 7 or newer, then use "UTF-8".
Note that spaces in query parameters are represented by +, not %20, which is le...
How to match “any character” in regular expression?
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You may also sometimes need to match newlines in Java regexes in contexts where you cannot pass Pattern.DOTALL, such as when doing a multi-line regex search in Eclipse, or as a user of any Java application that offers regex search. Based on regular-expression.info's guide, ...
Waiting on a list of Future
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If you are using Java 8 then you can do this easier with CompletableFuture and CompletableFuture.allOf, which applies the callback only after all supplied CompletableFutures are done.
// Waits for *all* futures to complete and returns a list...
IntelliJ does not show 'Class' when we right click and select 'New'
...we right click on a directory, select New and then get the context menu, Java based options are not shown. Currently get things like File, some HTML options, XML options.
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How to convert hex to rgb using Java?
How can I convert hex color to RGB code in Java? Mostly in Google, samples are on how to convert from RGB to hex.
17 Answer...