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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 ...
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...
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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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 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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keytool error :java.io.IoException:Incorrect AVA format
... escape it with a leading backslash, e.g. Acme\, Inc. See docs.oracle.com/javase/6/docs/technotes/tools/solaris/…. This also works in the signing dialog of the Eclipse IDE.
– Yojimbo
Apr 30 '13 at 21:26
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What does 'public static void' mean in Java?
What does public static void mean in Java?
9 Answers
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