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How to build jars from IntelliJ properly?
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You have to change manifest directory:
<project folder>\src\main\java
replace "java" with "resources"
<project folder>\src\main\resources
This is how it should look like:
Then you choose the dependencies what you want to be packed IN your jar, or NEAR your jar file
To build...
How can I count the number of matches for a regex?
...tcher.find() does not find all matches, only the next match.
Solution for Java 9+
long matches = matcher.results().count();
Solution for Java 8 and older
You'll have to do the following. (Starting from Java 9, there is a nicer solution)
int count = 0;
while (matcher.find())
count++;
Btw,...
How to get a reversed list view on a list in Java?
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java.util.Deque has descendingIterator() - if your List is a Deque, you can use that.
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Singleton with Arguments in Java
...how I'd probably do it when coding. In C#, I'd just use properties though. Java, probably like this.
– Zack
Jun 26 '09 at 20:33
132
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Data structure: insert, remove, contains, get random element, all at O(1)
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@aamadmi - well, in Java I guess it should. In pseudo-code, contains should work just fine :)
– r0u1i
Apr 23 '14 at 13:22
4
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No Exception while type casting with a null in java
... equal to "null"
I wondered where that is specified and looked it up the Java Specification:
The null reference can always be assigned or cast to any reference type (§5.2, §5.3, §5.5).
If the reference is null, it is converted to the string "null" (four ASCII characters n, u, l, l).
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Constructor overloading in Java - best practice
... the least to the most arguments in the constructor call. Is this standard Java style? Why?: In my opinion it would make sense to do it the opposite way that way you the first constructor definition you should see is the one that has all the details.
– Josie Thompson
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java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist
...s my solution:
Right click on your project and select Properties.
Select Java Build Path from the menu on the left.
Select the Order and Export tab.
From the list make sure the libraries or external jars you added to your project are checked.
Finally, clean your project & run.
You may also c...
How to remove a key from HashMap while iterating over it? [duplicate]
...equalsIgnoreCase(entry.getValue())){
iter.remove();
}
}
With Java 1.8 and onwards you can do the above in just one line:
testMap.entrySet().removeIf(entry -> "Sample".equalsIgnoreCase(entry.getValue()));
s...
Run single test from a JUnit class using command-line
...low me to run a single test from a JUnit class using only command-line and java.
3 Answers
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