Java
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Detect OS sleep and wake up events in Java
Is there any way for Java programs to detect when the operating system is about to go to sleep, or fail, or at least d…… -
Java – mongodb is obviously too big for a 16MB hat
I have a mongodb series Simply put, it has two columns: user and URL It has 39274590 lines The key to this table is {u…… -
Java – easymock and modified a variable method parameter
How to use easymock to modify the variable method parameters of simulation methods? For example, I have a class that u…… -
Does anyone use the spring framework of Java config now?
I am browsing the spring Java config page It says Does that mean it's out of date? Does anyone use it in their project…… -
Rotate the coordinate plane of data and text with Java
I need it: The following code sets this problem It works except for two problems: 1.) Draw the data point, the upper l…… -
Java – Android: a simple GridView that displays text in the grid
I followed this example in the Android tutorial on GridView, but I want to use textview to simply display some text in…… -
Is there anything wrong with this java code?
class Creature { class Creature { private int yearOfBirth=10; public void setYearOfBirth(int year) { …… -
Java – install jpype in mountain lion
I'm trying to install jpype.com in mountain lion I follow all the steps suggested in this article: how to install jpyp…… -
How to generate serialVersionUID programmatically in Java?
I am developing a project to generate java files I want to be able to add serialVersionUID just like using the serialv…… -
Java – selenium does not detect the second window in ie
My application opens a new button - click window where I need to do something However, selenium webdriver's response t…… -
Java – JUnit test: meaning of failure (“not yet implemented”);?
What is the meaning of this code? for example @Test public void testGetDiameter() { **fail("Not yet implem…… -
Java – is it normal that the asynctask thread still exists after execution?
When I use asynctasks check in DDMS, is it normal for the thread to remain in memory as a waiting thread after onposte…… -
Java – LDAP user password authentication using JNDI
public static void main(String[] args) public static void main(String[] args) { String INITCTX = "com.sun.jndi.lda…… -
Java – how to avoid concurrentmodificationexception when iterating over this collection?
I need to iterate over a series of projects & sometimes added to the collection at the same time However, if I add…… -
Array – how to use data Vector. Generic. Mutable?
How to sort long list data (string, floating point, etc.) read from large files Solution In general, how is this done …… -
Error converting date in Java
String date = jsonobject.getString("needbydate"); String date = jsonobject.getString("needbydate"); DateFormat df = ne…… -
Java – Dbunit does not clean up and insert the database after each method, so the test is not independent
I have a Dao class test. I use Dbunit to create and populate the database (using Derby in memory) This is the code (Te…… -
Java – Maven: the jar will be empty – nothing is marked as contained
I have a little problem with Maven When I run the command MVN package, I get the following warning: [warning] jar will…… -
Java – NetBeans keep transferring Maven repository indexes, even if I have disabled it
Although I have set index update frequency to never: NetBeans often try to transfer Maven repository indexes, which co…… -
Java – in SpriteBatch Nested shaperenders in begin / end begin / end
Whether shaperender can be used to draw shapes between the start and end calls of SpriteBatch I tried, but there was n…… -
Java – why are short primitive types significantly slower than long or int?
I try to optimize the RAM usage of Android games by changing the int primitive to short Before I did this, I was inter…… -
Java – why doesn’t Proguard confuse method bodies?
I'm using Proguard to confuse my Jar program Everything is normal, but Proguard does not confuse local variables in th…… -
Is it possible to get from javax naming. Initialcontext get “everything”?
See English answers > code to list all the entries in JNDI on remote machine Solution Check Javadoc and I can see L…… -
Java – ‘placeholder’ character to avoid positive comparison?
I'm studying codingbat exercises for Java I encountered the following problems: My code is like this: public int match…… -
Description of volatile variables in Java documents
Here http://docs.oracle.com/javase/tutorial/essential/concurrency/atomic.html mention Can anyone provide an example? T…… -
Multithreading – how to update GUI from thread using Delphi
I am using Delphi anonymous thread to execute code If I do this from within the thread, changes will occur, but once t…… -
java – Collator plus Comparator
I have a bean collection optionitemdto (attribute tag and value), and I am now sorting by tag using such things: Colle…… -
Java – how do I call the default implementation of “toString”?
If toString is not defined, Java uses some hashes to print the class name If toString is defined, how to implement thi…… -
Java – how to create packages (folders) in eclipse projects through plug-ins
I try to develop a small plug-in for eclipse and create several java files in several folders (packages) as the starti…… -
Operator – rxjava returns the subscribed value in the function
For some reason, I sometimes want to use RX operators instead of the normal Java way to convert data structures, becau…… -
Bison java example
Does anyone know if there are some tutorials and / or examples of using GNU bison and java online I searched the Inter…… -
Java – Android WebView cookie returns null
I want to set and retrieve a cookie in WebView in Android I've tried many cookie manager scripts to try to make it wor……