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How do I run a spring boot executable jar in a Production environment?
...s to read and execute the jar file. You also have to configure the default Java for the server and Java environment variables to make things work.
– micaro
May 25 '19 at 11:38
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How do I convert CamelCase into human-readable names in Java?
...th matching lookarounds to split:
Regex split string but keep separators
Java split is eating my characters
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java: ArrayList - how can i check if an index exists?
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Since java-9 there is a standard way of checking if an index belongs to the array - Objects#checkIndex() :
List<Integer> ints = List.of(1,2,3);
System.out.println(Objects.checkIndex(1,ints.size())); // 1
System.out.println(O...
Iterating through a list in reverse order in java
...ator that will go through the list in reverse, here is an example:
import java.util.Iterator;
import java.util.List;
public class ReverseIterator<T> implements Iterator<T>, Iterable<T> {
private final List<T> list;
private int position;
public ReverseIterator(...
Convert integer into byte array (Java)
... class was designed for such dirty hands tasks though. In fact the private java.nio.Bits defines these helper methods that are used by ByteBuffer.putInt():
private static byte int3(int x) { return (byte)(x >> 24); }
private static byte int2(int x) { return (byte)(x >> 16); }
private sta...
Java Map equivalent in C#
...trying to hold a list of items in a collection with a key of my choice. In Java, I would simply use Map as follows:
3 Answe...
How to Iterate over a Set/HashSet without an Iterator?
...opulate set
for (String s : set) {
System.out.println(s);
}
Or with Java 8:
set.forEach(System.out::println);
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How to remove all null elements from a ArrayList or String Array?
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Try:
tourists.removeAll(Collections.singleton(null));
Read the Java API. The code will throw java.lang.UnsupportedOperationException for immutable lists (such as created with Arrays.asList); see this answer for more details.
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Build and Version Numbering for Java Projects (ant, cvs, hudson)
...-practices for systematic build numbering and version number management in Java projects? Specifically:
9 Answers
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How do I serialize an object and save it to a file in Android?
...se. It is extremely easy to implement too. developer.android.com/reference/java/io/Serializable.html
– mtmurdock
Aug 9 '12 at 22:07
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