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Apache POI Excel - how to configure columns to be expanded?
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Warning about autoSizeColumn, this requires java Font be available. This is not part of the headless java jre used on servers and will throw a NullPointerException.
– Stephen Dillon
Oct 2 '17 at 20:28
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Android encryption / decryption using AES [closed]
...vation is used as it is more secured.
import android.util.Base64;
import java.security.NoSuchAlgorithmException;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.KeySpec;
import javax.crypto.Cipher;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.IvParam...
Finding Number of Cores in Java
How can I find the number of cores available to my application from within Java code?
4 Answers
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Print an integer in binary format in Java
... do it by writing an algorithm, Is there any built-in function for that in Java?
21 Answers
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What is the reason for a red exclamation mark next to my project in Eclipse?
... Package Explorer and Project Explorer views now show a
new decorator on Java projects and working sets that contain build
path errors:
The concrete errors can be seen in the Problems view, and if you open
the view menu and select Group By > Java Problem Type, they all show
up ...
Passing Parameters JavaFX FXML
How can I pass parameters to a secondary window in javafx? Is there a way to communicate with the corresponding controller?
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What is the fastest way to compare two sets in Java?
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You have the following solution from https://www.mkyong.com/java/java-how-to-compare-two-sets/
public static boolean equals(Set<?> set1, Set<?> set2){
if(set1 == null || set2 ==null){
return false;
}
if(set1.size() != set2.size()){
return fal...
Can scrapy be used to scrape dynamic content from websites that are using AJAX?
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98
Here is a simple example of scrapy with an AJAX request. Let see the site rubin-kazan.ru.
All...
Java ByteBuffer to String
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There's no k.getBytes() method in java.nio.ByteBuffer (may be not in the version am using). So I used k.array() method which will return byte[].
– Madura Pradeep
Apr 20 '16 at 9:29
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What's wrong with overridable method calls in constructors?
... the object may be inconsistent and/or incomplete.
A quote from Effective Java 2nd Edition, Item 17: Design and document for inheritance, or else prohibit it:
There are a few more restrictions that a class must obey to allow inheritance. Constructors must not invoke overridable methods, directl...