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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 Multiple Inheritance
In an attempt to fully understand how to solve Java's multiple inheritance problems I have a classic question that I need clarified.
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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(...
Explicitly calling a default method in Java
Java 8 introduces default methods to provide the ability to extend interfaces without the need to modify existing implementations.
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Please explain some of Paul Graham's points on Lisp
...lanation is perfectly fine -- and he takes a shot at a comparison to C and Java, which I won't do -- but for some reason I really enjoy discussing this very topic once in a while, so -- here's my shot at an answer.
On points (3) and (4):
Points (3) and (4) on your list seem the most interesting and ...
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...
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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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:
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