Java
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Java – can the modified quicksort be the best case of O (n)?
It is generally believed that the best case for quick sorting is O (nlogn), because each partition of the array is abo…… -
Java JPA implementation – how to read / set properties?
I'm reading the book beginning Java ee6 platform and GlassFish 3. I have some trouble understanding the access types o…… -
Java – how to dynamically add projects to listview in Android
Who can help me? I'm trying to create a listview in Android, and I'm trying to load the project into it using code (no…… -
The CTRL space completion of Java – Eclipse: main is no longer valid
I use eclipse (3.7.1), and I like Ctrl space autocompletion It was once used to generate static public void main (stri…… -
Java – how do you call the paint method in the Applet extension class?
I have two called paintme Java and starter Java class file import java.applet.Applet; import java.awt.*; public class…… -
Why are there exceptions to the following java code?
Why do I get exceptions Exception in thread "main" java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to…… -
Java – string foo = “bar” and string foo = new string in Android (“bar”)?
I searched for this, but the keywords must be too generic to narrow the relevant bits Why are both ways of declaring s…… -
Java and C 11 volatile
I want to port some code from Java to C 11. I'm confused about volatile keyword I'm not familiar with the Java languag…… -
Symfony – complex doctrine2 query with optional parameters
I want to know the best way to query the database with optional parameters For example, I have a search, its name, loc…… -
Java – Jfilechooser in JPanel; How to let users choose
The default Jfilechooser works, but what I don't like is the fact that it pops up I'd rather have a GUI where all the …… -
Java – why doesn’t JPA automatically generate an ID for my row?
I want to use the sequence policy to automatically generate IDS, but I'm breaking my mind to make it work I have no id…… -
Java – how do you share a low-level utility class between packages without exposing it to a public API?
I have a library project. I want to restrict the public API, but I also have some low-level utility classes that are s…… -
Java me – is there a way to run J2ME (jar / JAD) programs without using the Sun Java wireless toolkit or any ide of J2ME?
I want to run my j2me program (jar / JAD) on my computer without using any ide or Sun Java wireless toolkit or somethi…… -
Format string in Java, in bytes
Suppose I have a string containing non ASCII characters in Java, I want to use string Format () so that the formatted …… -
Where can I download JRockit for Java 1.5
I checked the download page http://www.oracle.com/technetwork/middleware/jrockit/downloads/index.html , but only the J…… -
Java – how do I get all singleton instances from Guice injector?
Is there a simple way to enumerate all singleton instances that Guice injector has created? Or another way to get all …… -
How do I convert strings to operators in Java?
See English answers > is it possible to pass arithmetic operators to a method in Java? 8 import java.io.*; import j…… -
Java – jtextfield listener when modifying textfield text
I know how to add a text listener on jtextfield, trigger when the text changes, and modify the text of jtextfield duri…… -
Java – playframework module and routing
I use play! Frame 1.2 five I have a module 'business model' In conf / routes: I have a controller: package controllers…… -
Java temporary file multithreaded application
I'm looking for a simple way to generate a temporary file that always ends with a unique name on a per JVM basis Basic…… -
Java – how do I change the contents of the JScrollPane significantly each time I call the actionlistener?
Every time I call the action listener, I want the JScrollPane to change its list to a completely different list I'm no…… -
What is the difference between JPDA and JMX?
I'm trying to write an application monitoring tool, and I met two standards, JPDA and JMX They seem a bit like me Any …… -
Java – use JTable to display the slow performance of streaming data
The code I referenced is proprietary and requires a multicast server, so I cannot publish sscce code snippets I unders…… -
Java – create domain in Amazon simpledb
I'm using Amazon simpledb and trying to create a database using the following tutorial Basically, it throws an error: …… -
Adding properties from Java to groovy objects
I want to be able to add properties to an instance of a string object using the metaprogramming capabilities of groovy…… -
Java – Android VM heap size
I can't understand what Android App heap size is Runtime rt = Runtime.getRuntime(); long maxMemory = rt.maxMemory(); L…… -
Java – how do I know at run time if a jar file already exists in the classpath?
If a particular jar file is already in my classpath, what is the best way to know at run time? If this is not the case…… -
Run java code after method returns?
I have a web service based on Java classes Whether the code can be run after the confirmation message is returned in t…… -
Java – Android loadermanager confused with cursorloader
I tried to convert my Android application to use loadermanager and cursorloader Basically, I have a SQLite database wi…… -
Java – throw an exception on a method call
How to throw and unsupportedoperationexception on a method? So, if I have an Iterable object and I try to disable the …… -
Java: match regex and replace each character
I have a string, for example: There exists a word *random*. Random will be a random word How to replace each random ch…… -
How do I get a source object from documentlistener (documentevent)?
See English answers > how to find source component that generated a documentevent public void removeUpdate( Documen……