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Force point (“.”) as decimal separator in java
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You can pass an additional Locale to java.lang.String.format as well as to java.io.PrintStream.printf (e.g. System.out.printf()):
import java.util.Locale;
public class PrintfLocales {
public static void main(String args[]) {
System.out.printf("%.2f: De...
How to create a new language for use in Visual Studio
I want to write a new templating language, and I want Visual Studio to "support" it. What I need to know is:
7 Answers
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How to calculate date difference in JavaScript?
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<html lang="en">
<head>
<script>
function getDateDiff(time1, time2) {
var str1= time1.split('/');
var str2= time2.split('/');
// yyyy , mm , dd
var t1 = new Date(str1[2], str1[0]-1, st...
Why does sun.misc.Unsafe exist, and how can it be used in the real world?
...ess.It is possible to retrieve an
object’s memory address using the java.lang.Unsafe class, and operate on its fields directly via unsafe get/put methods!
Compile time optimizations for JVM. HIgh performance VM using "magic", requiring low-level operations. eg: http://en.wikipedia.org/wiki/Jikes_R...
Where is array's length property defined?
... of an array (you can't find it in any .class file), they're a part of the language itself.
10.7. Array Members
The members of an array type are all of the following:
The public final field length, which contains the number of components of the array. length may be positive or zero....
How to run Maven from another directory (without cd to project dir)?
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java.lang.IllegalArgumentException: Parameter 'directory' is not a directory
– Damir Olejar
May 7 '17 at 15:22
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How can I get a resource “Folder” from inside my jar File?
...o work if path is in a jar, will give this error on toURI conversion: java.lang.IllegalArgumentException: URI is not hierarchical
– tribbloid
Sep 3 '16 at 22:04
4
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Truncate a list to a given number of elements
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Use List.subList:
import java.util.*;
import static java.lang.Math.min;
public class T {
public static void main( String args[] ) {
List<String> items = Arrays.asList("1");
List<String> subItems = items.subList(0, min(items.size(), 2));
// Output: [1]
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Converting Secret Key into a String and Vice Versa
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NOTE II: Earlier Java versions do not include a Base64 in one of the java.lang or java.util packages. It is however possible to use codecs from Apache Commons Codec, Bouncy Castle or Guava.
SecretKey to String:
// CREATE NEW KEY
// GET ENCODED VERSION OF KEY (THIS CAN BE STORED IN A DB)
Secr...
Android – Listen For Incoming SMS Messages
...ntent.HasExtra("pdus"))
{
var smsArray = (Java.Lang.Object[])intent.Extras.Get("pdus");
foreach (var item in smsArray)
{
var sms = SmsMessage.CreateFromPdu((byte[])item);
address = sms.OriginatingAddr...