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Can I pass an array as arguments to a method with variable arguments in Java?
... is an Object[], so you can also call ezFormat(args) either way.
See also
Java language guide/varargs
Varargs gotchas #1: passing null
How varargs are resolved is quite complicated, and sometimes it does things that may surprise you.
Consider this example:
static void count(Object... objs) {
...
How to make an array of arrays in Java
... by any object with ease.
Hoping this can help someone someday :)
import java.lang.ref.WeakReference;
import java.util.LinkedList;
import java.util.NoSuchElementException;
import java.util.Queue;
/**
*
* @author leBenj
*/
public class Array2DWeakRefsBuffered<T>
{
private final WeakR...
Java logical operator short-circuiting
...d so you can skip evaluating the rest of the expressions.
You indicate to Java that you want short-circuiting by using && instead of & and || instead of |. The first set in your post is short-circuiting.
Note that this is more than an attempt at saving a few CPU cycles: in expressions ...
What are the main disadvantages of Java Server Faces 2.0?
Yesterday I saw a presentation on Java Server Faces 2.0 which looked truly impressive, even though I am currently a happy ASP.NET MVC / jQuery developer. What I liked most about JSF was the huge amount of AJAX-Enabled UI components which seem to make development much faster than with ASP.NET MVC, es...
Java Serializable Object to Byte Array
...
If you use Java >= 7, you could improve the accepted solution using try with resources:
private byte[] convertToBytes(Object object) throws IOException {
try (ByteArrayOutputStream bos = new ByteArrayOutputStream();
Obj...
Check if at least two out of three booleans are true
...!!b+!!c >= 2 to be very safe).
In response to TofuBeer's comparison of java bytecode, here is a simple performance test:
class Main
{
static boolean majorityDEAD(boolean a,boolean b,boolean c)
{
return a;
}
static boolean majority1(boolean a,boolean b,boolean c)
{
...
Any shortcut to initialize all array elements to zero?
...t to initialize an one-dimensional array to a different value, you can use java.util.Arrays.fill() (which will of course use a loop internally).
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Remove accents/diacritics in a string in JavaScript
...'base':'K', 'letters':'\u004B\u24C0\uFF2B\u1E30\u01E8\u1E32\u0136\u1E34\u0198\u2C69\uA740\uA742\uA744\uA7A2'},
{'base':'L', 'letters':'\u004C\u24C1\uFF2C\u013F\u0139\u013D\u1E36\u1E38\u013B\u1E3C\u1E3A\u0141\u023D\u2C62\u2C60\uA748\uA746\uA780'},
{'base':'LJ','letters':'\u01C7'},
...
Ship an application with a database
...n order to work with a Sqlite database.)
package android.example;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQL...
Pretty-print a Map in Java
...
Using Java 8 Streams:
Map<Object, Object> map = new HashMap<>();
String content = map.entrySet()
.stream()
.map(e -> e.getKey() + "=\"" + e.getValue() + "\"")
...